FPBug: Meet the very first stable kernel for the Galaxy S2 i9100, S2 AT&T i777, S2 Epic 4G Touch d710 and Note n7000 since Gingerbread days
Every single Android 4.x kernel for these devices has had a serious bug (FPBug) that randomly corrupts the state of processes, starting with Samsungs's stock ICS and JB and spanning every custom kernel out there newer than Gingerbread.
STATS: 500+ kernel downloads in 2 days, wow!
RELATED: Make sure you check out my TRIM-enabled kernels updated with the FPBug fix.
UPDATE: A fix for FPBug has been merged into CyanogenMod's cm-11.0 branch! The fix has not made it to the stable/cm-11.0 and cm-12.0 branches yet. Changes: this one and the previous 12. Commits: this one and the previous 12. The 20150111 nightlies are the first official CM 11 nightlies to incorporate the fix.
A little bit of history
As Android got more complex, the effects of this bug grew more visible, to the point of making the platform completely unstable for some users. Complex apps would fail for no reason, GSM, 3G and WiFi connectivity would randomly be lost, music playback would stop and require a reboot, camera would fail, internal storage and SD cards would become inaccessible, installed apps would disappear, users would experience battery drain issues ranging from inability to enter deep sleep all the way to phones becoming very hot, and the list goes on and on.
These failures all seemed unrelated and their cause was very hard to track down. Partly because events happened randomly and were not reproducible, but mostly because the bug undermines the very assumptions programmers deal with when creating any kind of code. And so years passed and the common cause of all this pain was never identified. Many ROM developers abandoned the platform out of frustration.
Then finally this past March, when analyzing the random loss of access to storage, user cgx observed a corruption event for the first time, and a connection between all these unrelated issues, sometimes hypothesized, was suddenly found. The corruption seemed to have happened in the stack, but it was later suspected then confirmed that the corruption actually happened directly in the registers of the floating point unit of the CPU. Yet processes that did not use floating point at all were also affected, because the GCC compiler typically spills registers into the FPU and uses FP and NEON instructions for optimization.
These findings allowed the creation of a stopgap fix for the "music bug" that shielded the FUSE process (which manages access to storage) from corruption in the FPU. The fix was widely applied and effectively eliminated all bugs resulting from sudden loss of storage access and returned the platform to pre-Android 4.3 stability levels: ie, sort of stable enough to be used as a daily driver. Later a working detector for the elusive bug was made and it was confirmed that all kernels since Gingerbread were affected (a thing that was already suspected given that the FirefoxOS people had described similar symptoms in 2012 under stock Samsung ICS). Finally enough of a root cause was hypothesized and a fix was worked out. And if this were not good enough news, user Entropy512, the exynos platform hero who saved us all from brickbug, has hinted that official Lollipop from Omni is now a possibility.
A short description of what the fix does can be found here.
Update
User zeitferne worked non-stop throughout this weekend and made amazing progress. He found a couple of missing commits that are apparently needed for the FPU state tracking to work through power state changes, he discovered that the FPU in CPU0 is the one that actually gets the corruption, he found an explanation why this bug never affected the 4412 platform (Galaxy S3, Note 2, etc), he narrowed down the conditions for the corruption, and finally output an alternative patchset that apparently fixes the FPU state restore optimization rather than just disabling it as mine does.
Kernel developers are encouraged to merge his changes in lieu of mine once enough testing is done and @zeitferne green-lights the patches. This is important as it might fix as-of-yet undetected bugs or prevent bugs arising from future changes. In the meantime, eager maintainers can merge my fix which is by now well tested. Users will only see a small (<< 1% ?) performance increase with zeitferne's patchset and don't really need to bother with this; my advice for them would be to wait for the changes to trickle into their kernel of choice. AMAZING JOB ZEI!!!
2nd UPDATE: @zeitferne has green-lit his patchset! Kernel maintainers merging it please take note: 1) Make sure my fix is removed before applying his, otherwise there will be a small performance hit in the resulting kernel. 2) Both our fixes also affect the 4412 platform (i9300, n7100, etc) in slightly different ways, and the effects of this have not been properly tested. I must recommend that some testing be done before distributing FPBug-fixed 4412 kernels. Please report your test results back to this thread.
WARNING: A problem was reported with zeitferne's patchset.
FOLLOW UP: @zeitferne made some changes to his patchset and initial testing looks good.
AND FINALLY: The patchset was merged into cm-11.0! (See this change and the 12 previous ones.)
Downloads
You will find kernels for various CyanogenMod releases, M-snapshots and nightlies here. These kernels are guaranteed to work only with the exact matching version of CM specified in the last part of their filenames. But in reality they should work with most versions of CM that are close enough. (Don't ask me about this, I don't know, I don't even have any of these phones! Just try them and see for yourself if you are feeling a little adventurous.) For other ROMs i expect this fix to be merged in a matter of days after some more testing is done. Please be patient, and KitKat users can flash my music bug fix in the meantime.
FAQ
Q. I have flashed your music bug fix in the past. Can I flash your kernel?
A. Yes! The music bug fix has no downsides. In fact, as a side effect, that fix makes your phone slightly faster and saves some battery so it should be merged in all ROMs IMHO. If you already have it installed leave it in place, but do not flash it again the next time you upgrade the OS. Please do not flash it just for the sake of optimization: since it is based on CM11 M10, it would actually be a downgrade.
XDA:DevDB Information
FPBug-i9100, Kernel for the Samsung Galaxy S II
Contributors
Lanchon
Source Code: https://www.androidfilehost.com/?w=files&flid=22853
Kernel Special Features:
Version Information
Status: Testing
Created 2014-12-19
Last Updated 2015-01-14
(reserved)
Is the BLN included ?
Lanchon said:
And if this were not good enough news, user Entropy512, the exynos platform hero who saved us all from brickbug, has hinted that official Lollipop from Omni is now a possibility.
Click to expand...
Click to collapse
It's not about i9100 ? Right ?
Can't wait till testing is complete and you merge the fix into your trim kernel for the i9100 lanchon. Thanks to all the programmers, testers and commenters in the bug thread for their hard work.
Sent from my GT-I9100 flowing on SwiftKey in Tapatalk
DarkJohn said:
Is the BLN included ?
It's not about i9100 ? Right ?
Click to expand...
Click to collapse
yes, he refers to the i9100 and the n7000
DarkJohn said:
Is the BLN included ?
It's not about i9100 ? Right ?
Click to expand...
Click to collapse
these are all standard CM kernels. please request features on the CM thread.
Lanchon said:
yes, he refers to the i9100 and the n7000
Click to expand...
Click to collapse
Oh God ! Lollipop
I am anxious
@Lanchon thank you very much for ur hard work [emoji122] [emoji122] [emoji108]
Dammit... Never wanted to use CM again... I think I will have to at least for now until it gets integrated in other kernels
Great Job @Lanchon
i never had any GPS problems on my i9100 before ICS. Since JB it has gotten sooooo much worse. I tried atleast 20 different ROMs (JB, KK) and 5 different Navigation Apps. Nothing helps. Currently i am on CM11 M12 Snapshot. Still not better...
Could this kernel also help me with the GPS Problem??
so no bad battery life any more?
Vidura Dissanayake said:
so no bad battery life any more?
Click to expand...
Click to collapse
Yes exactly. With a little more testing a final version should be coming soon. What an awesome Christmas gift!
Thindboy said:
i never had any GPS problems on my i9100 before ICS. Since JB it has gotten sooooo much worse. I tried atleast 20 different ROMs (JB, KK) and 5 different Navigation Apps. Nothing helps. Currently i am on CM11 M12 Snapshot. Still not better...
Could this kernel also help me with the GPS Problem??
Click to expand...
Click to collapse
No it won't solve gps problems. I've had good luck using GPS status https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2 and Faster GPS https://play.google.com/store/apps/details?id=org.fastergps from the Google play store. GPS status will download assistance data (A-GPS) and faster GPS setups the proper ntp server for your area. I get fixes in about 10 seconds now.
Sent from my GT-I9100 flowing on SwiftKey in Tapatalk
Everything is somehow faster with this kernel. I flashed the music bug fix with this kernel. Waiting for trim kernel, it will further accelerate the phone.
I noticed that the phone is not heated as before.
You're a genius because you've done a lot for us, s2 community ... And we know that you do not own this legendary phone
Thank you @Lanchon
Sent from my GT-I9100 using Tapatalk
I dont understand does this feature going to be added to cm11 or do i have to flash a zip to add it?
Alucard said:
I dont understand does this feature going to be added to cm11 or do i have to flash a zip to add it?
Click to expand...
Click to collapse
im not part of the cm team and my crystal ball is acting up lately so i cant answer Q1.
this is a kernel, you need to flash it. please read the downloads section.
DarkJohn said:
Is the BLN included ?
It's not about i9100 ? Right ?
Click to expand...
Click to collapse
Cm12 is available?
Alucard said:
I dont understand does this feature going to be added to cm11 or do i have to flash a zip to add it?
Click to expand...
Click to collapse
Waiting for your review for Spirit ROM once you've flashed it.
Lanchon said:
im not part of the cm team and my crystal ball is acting up lately so i cant answer Q1.
this is a kernel, you need to flash it. please read the downloads section.
Click to expand...
Click to collapse
OK so FPBug-V1-src.zip is a flashable zip for fpbug fix for every rom stock jb and kk?And cm-11-M10-i9100-music-bug-fix.zip is for cm11 m10 only?
---------- Post added at 12:36 PM ---------- Previous post was at 12:33 PM ----------
x3dnd3x said:
Waiting for your review for Spirit ROM once you've flashed it.
Click to expand...
Click to collapse
Im on neatrom now ,will be on kk once a stable kk apolo kernel comes out!
What recovery does this kernel has built in? I use 11.15 cm11 custom build my markox and I want to mare sure that I can reflash the rom in a recovery if it screws up. I never used Odin since I got this phone.
Mockingbird said:
What recovery does this kernel has built in? I use 11.15 cm11 custom build my markox and I want to mare sure that I can reflash the rom in a recovery if it screws up. I never used Odin since I got this phone.
Click to expand...
Click to collapse
Lanchon bases his kernel on stock cm kernel, so cwm recovery is built in.
Related
THIS THREAD IS DEPRECATED.
This project has move down, out of the alpha stage, to here:
http://forum.xda-developers.com/showthread.php?t=1950453
This thread is here for documentation purposes only! There are better builds at the new link, more detailed instructions, and support. Please direct your attention there! Thank you.
Warning! Flashing this may/will delete your /efs, which will causes major issues if you ever decide to return back to stock, so make sure you make a backup! If you don't know how, frankly you shouldn't flash this, as you need at least some experience just in case something goes wrong.
Team SuperNOva:
Oisis (helped us get over the final issue)
Zaclimon (first kernel dev, did a LOT of the preliminary work)
Neyodmium (helped us sort out that SGS sources that CAN be used for the 4.0, and helped pinpoint what needed to be replaced/fixed)
Me, hanthesolo (Rom dev, I will be providing updates, support, and other smaller things, so they can concentrate on the kernel, while I fix up the ROM)
The Back Story:
Firstly, excuse my cheesy biblical writing, I just have always wanted to write something in that format .
In the beginning (march 2012), there was hanthesolo. He saw the Galaxy Player forums, and all that he saw was good. This man started creating new work for the Gplayer forums, a and gained a small following. There was just one issue that concerned him: NO ICS!
In light of this, this man created a thread, to collect all ICS development, into one easy-to-read forum. Other began to follow him, zaclimon, Ijimaniac, and several others. Ideas flew fast and furious, but hope was waning quickly. A kernel would have to be created from scratch, a monumental task that had not been undertaken by any man so far.
All was quiet for awhile, and people began to slowly fade out, until only hanthesolo and zaclimon remained, slowly trading ideas and guesses over several weeks. Then a new disciple arrived: neyodmium. This korean (?) developer brought a different kind of kernel experience to the trio, and development began in earnest, with zaclimon and neyodmium trading work, while hanthesolo contributed where he could. One unsurmountable issue arose: this magnificient kernel, the likes of which had never lit up these forums before, would merely boot into recovery, not into Android.
Then Oisis came around, hearing our desperate cries for help. Like a moses, he guided his flock in the right direction, squashing issue after issue, until a monumental day arrived: August 13, 2012. On this day, ICS was finally created in Cyanogen's own image, and it was good.
Then increased development began, with hanthesolo squashing CM9 bugs, while zaclimon, neyodmium, and Oisis working feverishly on the kernel.
But an issue occurred, a wrench in the works. Thine enemy's name is GL, SuperNOva. GL would not cooperate, acting as a barrier between usable ICS, and frustrated efforts to fix it. But one day, the magical variable was flipped, and the builds booted! About this time there was a github mishap involving a bad I9000 push that stopped things for about a week, but that's another story.
What happens next? I dunno, but I will update this story when it happens .
NOTE: This does NOT represent anyone's political or religious standpoint, or the way anyone is viewed. It was created as a humorous way to explain our situation to users.
The fix list:
ROM:
Bluetooth (should be easy)
HW acceleration (easy, just neds to be implemented)
Camera (will take awhile)
Kernel:
HW acceleration (Oisis is working on it)
Drm manager (needs to be fixed before market can be used!)
US home button
Boot to recovery (very annoying when trying to flash builds)
Camera (?)
Changelog:
Build#1:
Initial release, basically everything is broken.
Build#2 changelog:
Finally fixed bootlooping that was plaguing our github
fixed ALL GL crashing and oddness
Fixed/improved sound (if it was broken)
Fixed Browser (slow, but usable)
Waiting on a new kernel to readd GL and/or HW acceleration.
FM radio! Just download the spirit FM app, you can find it for free on XDA
Build#3 changelog:
Fixed av codecs (videos should play just fine now, as well as youtube)
General code cleanup and optimizations
Build #3.5:
Performance improvements and some code cleanup.
Download links:
Build#1:
CM9: http://www.broken-arrow.pl/oisis/aokp/YPG1-CM9-OiSiS-build-02.zip
Kernel: http://zhshibenzhu.host22.com/tuchuang/cm9_kernel.tar
Build#2:
CM9: http://www.mediafire.com/download.php?lu33uubm6der2j9
Kernel: Flash the one above.
Build#3:
http://www.mediafire.com/download.php?96yk0e3y8cqzj1b
New kernel: http://forum.xda-developers.com/attachment.php?attachmentid=1298676&d=1346633739
Build #3.5: http://www.mediafire.com/download.php?oscyfde4w364dj6
Install instructions:
Special thanks to daniel644 for the video and his high praises of me .
If you get stuck in recovery, flash a GB kernel, it will boot into recovery, simply hit "reboot". When it bootloops, boot into download and flash the CM9 kernel.
Resources:
Manifest.xml (so you can just simple "repo sync" instead of git pulling every time we have a new commit):http://forum.xda-developers.com/attachment.php?attachmentid=1278615&d=1345762041
Wiki link (please help improve it!): http://forum.xda-developers.com/wiki/YP-G1
Github repo: https://github.com/TeamSupernovaSGP
NOTE: this is just the modded files. You need to full CM9 source before you can compile!
Contact us at: [email protected]
Please only emails us with valid questions or useful support!
port kernel 3.x from Galaxy S to SGP4.0 should be easy, coz hardware parts are almost the same, but SGP5.0 conpoments arent the same, the way for SGP5.0's 3.x kernel should be harder.
tdmcode actually has a booting CM9 build. I believe that wifi and sound work, but nothing else. His vendor tree and device tree are here:
https://github.com/tdm/android_vendor_samsung_ypg1/tree/ics-cm
https://github.com/tdm/android_device_samsung_ypg1/tree/ics-cm
He just never released it as it is still not very functional.
Maybe it would be easier to just take his source and try and fix the issues and make it fully working. Because getting an AOSP bringup to boot is most of the work; the rest should be easier to do.
Would it not be easier to port over a rom, as the hardware is the same? It would at least be more helpful, because if we could create a guide, we could port other roms over very quickly!
Sent From my Galaxy Player running StratusRom using XDA
klin1344 said:
tdmcode actually has a booting CM9 build. I believe that wifi and sound work, but nothing else. His vendor tree and device tree are here:
https://github.com/tdm/android_vendor_samsung_ypg1/tree/ics-cm
https://github.com/tdm/android_device_samsung_ypg1/tree/ics-cm
He just never released it as it is still not very functional.
Maybe it would be easier to just take his source and try and fix the issues and make it fully working. Because getting an AOSP bringup to boot is most of the work; the rest should be easier to do.
Click to expand...
Click to collapse
I built it and I will test to see if it works (I'll use the newest kernel from cm7)
I am going out on a limb here...could we use the cm7 kerbel to help port a workable ics kernel for a galaxy s port? Once thats done cooking up a working rom should be easy and quick.
Sent From my Galaxy Player running StratusRom using XDA
One thing
Ambitious project hanthesolo
one thing: could i suggest that the title of this thread should be Operation: ICS for Galaxy Player 4.0 or something?
Okay, I may rename it. ICS is far more feasible than you think. Once we get a working kernel running (which will be soon) we can port ics over from the galaxy s (which would be best, as once it boots most features would work). I hope by the time school starts up ics will be functional as a daily driver. I may not be able to help a ton, as most of this revolves around making a working kernel, but I will try to help where I can.
Sent From my Galaxy Player running StratusRom using XDA
I can't get it to boot. (stuck at samsung logo) I think it would be better to build it from source instead of porting over.
Its stuck at the samsung logo because the kernel probably didnt work. It has happened to me before, we need to compile an ics kernel. The galaxy s one almost works, we just need to find out what makes it fail to boot.
Sent From my Galaxy Player running StratusRom using XDA
We can use the BML/STL partition layout in waiting for yaffs2. We can use entrophy's device tree as base for it(we can ask for help from him too)
https://github.com/Entropy512/android_device_samsung_infuse4g
Thanks for looking into that zaclimon! I will pm him and see if he would be interested. I willxupdate the opxwoth info from various people/sies as I get it.
Sent From my Galaxy Player running StratusRom using XDA
Would a tablet kernel made from scratch to run ICS do anything or does it need to be more kosher with Samsung and their device tree?
rozelle25 said:
Would a tablet kernel made from scratch to run ICS do anything or does it need to be more kosher with Samsung and their device tree?
Click to expand...
Click to collapse
I dont quite understand what you mean. Can you elaborate please?
Sent From my Galaxy Player running StratusRom using XDA
Hey I've been looking at this situation too and science coming back after q long time in the Xperia play forum I decided I wanted to help I found this guide about compelling ics http://www.freeyourandroid.com/guide/compile-ics but 1 problem I need to find the device and vendor tree on github but I've never used githubn before so need some help with that so if I can help please let me know
minipot said:
Hey I've been looking at this situation too and science coming back after q long time in the Xperia play forum I decided I wanted to help I found this guide about compelling ics http://www.freeyourandroid.com/guide/compile-ics but 1 problem I need to find the device and vendor tree on github but I've never used githubn before so need some help with that so if I can help please let me know
Click to expand...
Click to collapse
If it was that easy, webwould have ics today on our devices. The reason its been so difficult is that we need to combine/port githubs to create a working kerbel, which is a lot harder than it sounds. Thanks for the link! I will put it in the op.
Sent From my Galaxy Player running StratusRom using XDA
Im guessing u mean we could make a rom using that but first we need a kernel that qill work with it
Yeah. Porting a rom is easy, but getting a working kernel is not. Once we get a working kernel we can port as many roms as we please.
Sent From my Galaxy Player running StratusRom using XDA
Well I don't think it is that hard if we base ourselves from other devices trees like entrophy's one. I think he removed RFS from his initramfs which leaves him only ext4. Then he used a script that would convert the partitions to ext4 when installing CM9. I think it is the same things than with the mmc partitions (I think this is a part of why the 5.0 got ICS sonner than 4.0)
EDIT: And I think it's better to build it from source the first time. (instead of porting for the case of CM9 for example.)
Yeah, I was just talking comparatively. Has anyone begun working on this yet? I have been researching a LOT (the best thing I can do to help right now), but since my knowledge is limited on kernels, i cant help with that riht now
Sent From my Galaxy Player running StratusRom using XDA
[Q&A] [ROM][4.4.4] [GEEB] Unofficial CM-11.0 - Linaro 4.8, LEDs for E971/3, HDR cam
Q&A for [ROM][4.4.4] [GEEB] Unofficial CM-11.0 - Linaro 4.8, LEDs for E971/3, HDR cam
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.
Before posting, please use the forum search and read through the discussion thread for [ROM][4.4.4] [GEEB] Unofficial CM-11.0 - Linaro 4.8, LEDs for E971/3, HDR cam. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.
Thanks for understanding and for helping to keep XDA neat and tidy!
Just registerd to say thank you for 5.0 android!
Only yours build is working awesome! NFC, camera, battery life is exelect! I'm very glad. One problem is that i can't put some widgets on desktop... it crashes and reappearing without my widget.
Why you didn't update your thread, and what is differences in your build(for exmpl. the 2th of December and the 9-th)?
nikudim said:
Just registerd to say thank you for 5.0 android!
Only yours build is working awesome! NFC, camera, battery life is exelect! I'm very glad. One problem is that i can't put some widgets on desktop... it crashes and reappearing without my widget.
Why you didn't update your thread, and what is differences in your build(for exmpl. the 2th of December and the 9-th)?
Click to expand...
Click to collapse
I haven't gotten to the point with cm-12.0 where I'm comfortable "advertising" it yet. Once I get it building with linaro, and get init.d scripts and some other goodies working I'll do a new thread. As it stands, it's very much the same as brothaedhung's with some extra kernel kangs and some device tree tweaks.
As far as widgets go, I'm not sure as I haven't seen that issue. Could you describe the issue with some more detail, and get a logcat if possible?
Thanks for the kind words though
ronasimi said:
I haven't gotten to the point with cm-12.0 where I'm comfortable "advertising" it yet. Once I get it building with linaro, and get init.d scripts and some other goodies working I'll do a new thread. As it stands, it's very much the same as brothaedhung's with some extra kernel kangs and some device tree tweaks.
As far as widgets go, I'm not sure as I haven't seen that issue. Could you describe the issue with some more detail, and get a logcat if possible?
Thanks for the kind words though
Click to expand...
Click to collapse
Oh, you won't believe I just disable "Don't keep activities" and it works now!!!:laugh:
The problem was when i tried to put Clock for expl. the launcher crashes and appearing again without my widget. Now, i've put my widgets and turn on "Don't keep activities". Perfect! I could not spot any problems, yet!!! Good luck with developing, and thanks again!
ronasimi said:
02/03/2015 - Sorry guys, I've been slacking off on updating this post. All current builds are using my KK kernel brought up for LP, with stock frequencies instead of low_cpuclocks. I'll be posting a new build later this morning. As far as I know, this is the only CM build still using mako sources
Click to expand...
Click to collapse
Noticed this over here after looking in the Canadian section (which has most certainly be dead for a while). Great to see you're still active on this. Just want to make sure before trying this that there's nothing else required to move from KK to LP (assuming not since its on a KK kernel still). Any particular recovery recommended and/or version? I'm on a Bell E973 using PAC 4.4.4-RC2, TWRP 2.6.3.1.
Edit: Decided to update recovery to 2.8.4 from brothaedhung after doing some lurking around. Flashed 02/03 and full stock PA gapps. Everything butter so far. Cheers!
@ronasimi : Latest build is working fine, in call screen is also normal, just sensors not working some times,,
thanks..
Click to expand...
Click to collapse
I have the same issue in your latest CM12. Proximity and brightness don`t work at all. I use jb e970 modem. Don`t flash hybrid radio because I`m in Russia. Also there isn`t any frequence low than 300 Mhz...
And I try your build of CM11: 20141111. There are a lot of bugs:
1. In profiles doesn`t work ring mode "normal". It doesn`t swith to it after another modes (vibrate and mute).
2. Don`t work "Double tap to sleep"
3. In perfomance dont`t work setting minimal and maximum frequency - after rebooting they are turned to default.
I have e970 will it work with this rom?
dro3 said:
I have e970 will it work with this rom?
Click to expand...
Click to collapse
It works. You should give a try to the CM12.1 version. :good::good::good:
ryupunk said:
It works. You should give a try to the CM12.1 version. :good::good::good:
Click to expand...
Click to collapse
I have tried it but my phone gets signal lost many times
"ap watchdog bark detected"
Help!
Since i flashed 12.1 rom, this message with green screen appears frequently!
5.1.1 CM12.1 Unofficial, Watchdog Kenel Panics (green screens)
long post, so if you want the meat of the story scroll down!
hi guys, i'm an avid user of the e970 and i found this marvelous forum to be one of the most useful resources ever. freegee, lgnpst for when i bricked my phone, cm11, cm12, solid geeb kernel, validus, and now cm12.1 unofficial; it's all there. i'm certainly enjoying the experience that this device paired with this community has to offer.
first i'd like to thank the developers, and i'm seriously appreciating the active development on 12.1. i just finished using validus and while it was a much more solid experience than the short-lived cm12, android 5.0 was still killing me in terms of battery life. 5.1 certainly fixed that up though.
i want to second a few observations that are being made, which are the green-screen happenings. i want to mention something in particular though:
when i first flashed 12.1 unofficial i didn't have the recommended gapps at the time, so i flashed the minimal gapps for 5.0 (just to get wheels rolling per se). sure enough, it was a crazy experience. com.google.<insert service name here> was crashing repeatedly, often causing loss of functionality or green-screens. in a day i'd get anywhere between 4 and 7 green-screens (this was for three days, i'm talking about the 4/21 release). i re-wiped and formatted /system and re-installed 4/21 cm12.1, along with the recommended gapps this time.
NOW i'm having far fewer crashes, far fewer slow-downs and stutters; overall a much more lean experience. i also want to especially thank the developer for one thing: THANK YOU, for giving me back HSPA+ speeds on my att jb radio. validus and cm12 for some reason wouldn't give me HSPA speeds, just slow HSPA speeds that would take forever to peak at 200, 250 K/s (averaging around 70 to 140 K/s). now i can enjoy speeds up to 900 K/s (i'll run a speed test when a more stable release comes out)
so, is it gapps or a kernel issue? newer gapps reduced a lot of problems (though that's a given). also i'd like to point out another error: wi-fi. the mac address keeps changing upon reboot, namely the last three hex values. the first three are always 00:11:22. this wouldn't bother a lot of everyday users, but my workplaces utilizes mac filtering (only way around it is to use the battery-intensive 3g option instead, and i have terrible 3g reception at work where i sit; OUTSIDE my office, i get great reception, but it's bloody hot here x.x)
in any event, if someone could help me out or give me some advice that'd be great.
to summarize:
5.0 gapps + cm12.1 = lots of watchdog events
5.1 gapps + cm12.1 = a lot LESS watchdog events, still happening though
wi-fi mac address gets randomly generated at reboot
phone doesn't get detected by the computer on usb unless you leave it plugged in and do a soft reboot (advanced reboot option; common in most cm12.x instances with default kernels; solid geeb was better, and cm11 was flawless pretty much)
using built-in kernel
att jb radio
clockworksmod touch recovery, the last one (6.0.1.8 i think? it's the last one on their website)
4 gig micro sd card is in the slot, if that makes a difference
one more note: i'm having far fewer crashes on this new install maybe because there are only google related apps (other than whatsapp which i installed right away). future planned apps to be installed:
adobe acrobat
battlenet authenticator
es file explorer
facebook messenger
titanium backup
mx player
aedict japanese dictionary
busybox
greenify
orpheus music player
qr code reader
skype
supersu
terminal emulator
any increase in instability henceforth i'll let you know. also for anyone NOT having greenscreens on the e970, do you have whatsapp? if NO, interesting. if YES, still interesting, but please what version? mine's not the latest (yet)
blitz9826
so this is new:
after reaching 100% battery level on charge, the phone used to cool down. ever since switching to this rom, the battery DOESN'T cool down, it stays warm/hot. i know for a fact it's not a charger issue since i'm charging it with the same usb port as i have been in hte past (and every other phone for that matter on the same port)
any ideas?
blitz9826
sensors
Sensors isnt working. 28.04 build.
Will you fix it?
Icons are blurry?
Hey. Loving this ROM so far. Only problem is that the icons are blurry (not HD as usual). I wiped the cache and delvik cache but it's the same problem. Anyone know how to fix this? Thanks.
ronasimi, i am waiting, that you will read this. Please try to fix sensors in your unofficial 12.1 builds. I really want use your rom, but sensors is not working.
I have e970 with mako z30f bootloader, and latest twrp.
Auto rotation
The auto rotation is not working. Only staying in portrait. Can anyone help?
Mobile Data to Wifi Switching
@ronasimi
first of all thanks for the Great rom im using from almost a month with no issues at all.
Just a little question about wifi. Wifi did not connect automatically when my phone is locked. I've to wake it then WiFi connects immediately.
same is when im using mobile data and saved WiFi is in range. but phone will connect it,until i wake the device.
please help me out on this.
[SOLVED] Problems rooting 12.1 E971
Edit: For anyone else facing this issue, flashing the beta version of SuperSU from a custom recovery works.
On a previous 12.0 build I was able to get root just fine, but after clean flashing the latest 12.1 build no method seems to work. I've tried flashing the latest SuperSU update zip from TWRP, using adb to push su and busybox, and using the built in root in developer options.
Flashing the zip and using adb result in SuperSU saying there is no binary installed, and with the root in developer options it never pops up something asking for permission.
Has anyone gotten root on the latest 12.1? Thanks in advance.
Cm 12.1 Bluetooth Issue on E971
Thanks for the great rom. Works great except one minor. Bluetooth connection on and off consistently.
I have cm-12.1-20150521-UNOFFICIAL-geeb.zip rom installed.
Thanks!
Thank you for your hard work on the ROM.
On an E971 with a clean flash, as others above have reported, the sensors/auto rotation are not working.
Another request would be to add repo specifics on your description of the ROM at the start of the thread. You link to your github account where the repos are stored but there are many of them, some with similar names. I am interested in reproducing your build process and possibly contributing some changes, but I am not sure which specific device, vendor and kernel repos you are using to generate the build. Would love to get rotation sorted out and keep development going on this solid 5.1 option for a still capable device.
Still kind of suprised that CM isn't doing 12.1 builds for E973/E971 but it seems they have dropped a large number of phones with the move to 5.0/5.1 and angered a lot of people.
Thanks!
For all those who aren't yet ready to upgrade to Lollipop but would like to close this vulnerability on their device, I have built the latest CM11 i9100 source as of 9/1/15 (since CM11 nightlies for this device are no longer released for download). This build is unofficial but I have not modified it in any way**. It includes all StageFright fixes that the CM development team has implemented.
All required downloads are located here.
Works well as a daily driver with Lanchon's i777 Crossflash Kernel on my device.
Installation instructions can be found on CM's website or on Lanchon's kernel thread (above).
I recommend wiping cache/system/data prior to flashing (dirty flash with only a cache wipe did not work on my device when upgrading from the last public nightly).
Good luck!
** I did manually modify the updater-script to allow this ROM to be flashed on any device (because i9100 ROMs refuse to flash on the i777/S959G). Flashing this ROM on anything other than an i9100/i777/S959G WILL brick your device.
XDA:DevDB Information
CyanogenMod 11 [UNOFFICIAL] for i777 with Stagefright Fix, ROM for the AT&T Samsung Galaxy S II SGH-I777
Contributors
dimoochka
ROM OS Version: 4.4.x KitKat
Based On: CyanogenMod
Version Information
Status: Nightly
Created 2015-08-31
Last Updated 2015-08-31
Apparently the crossflash kernel is incompatible with this build (not sure why - was working ok on my device). A compatible version was rebuilt by Lanchon on 9/4/15 (can be found on his thread or in the download link in the first post).
Very considerate, and good of you to take the time to present this. Cheers, and build-on!
-Cyril
Stagefright bug still present
Flashed it yesterday.....all works fine.....except bug isn't fully patched
mmystere68 said:
Flashed it yesterday.....all works fine.....except bug isn't fully patched
Click to expand...
Click to collapse
I just started a rebuild. Will try to upload when it's finished tonight - maybe that vulnerability has been patched since the last time I built this (months ago).
mmystere68 said:
Flashed it yesterday.....all works fine.....except bug isn't fully patched
Click to expand...
Click to collapse
Rebuilt and uploaded. Give it a shot - I'm not sure if it'll work or if that bug is patched but it shouldn't hurt to try. Just make a backup first.
dimoochka said:
Rebuilt and uploaded. Give it a shot - I'm not sure if it'll work or if that bug is patched but it shouldn't hurt to try. Just make a backup first.
Click to expand...
Click to collapse
i just dirty flash it. right?
mmystere68 said:
i just dirty flash it. right?
Click to expand...
Click to collapse
If you're coming from a prior version of CM11 dirty flash should be fine.
Coming from omnirom 4.4.4 with TWRP, safe or no? There's a newer thread by Lanchon... my eMMC chip is VYL00M Firmware revision 19 (which can have superbrick bug?) ugh... Typically.... I softbrick my phone a few days til I sort things out when upgrading from GB>ICS>JB>kitkat (kitkat softbricked me)
All this partitioning stuff has me a bit sketched, but I hate how kitkat disabled USB mass storage (without me knowing or I wouldn't have upgraded) any custom ways around this with new roms?
ATT i777 here
Edgarhighmen said:
Coming from omnirom 4.4.4 with TWRP, safe or no? There's a newer thread by Lanchon... my eMMC chip is VYL00M Firmware revision 19 (which can have superbrick bug?) ugh... Typically.... I softbrick my phone a few days til I sort things out when upgrading from GB>ICS>JB>kitkat (kitkat softbricked me)
All this partitioning stuff has me a bit sketched, but I hate how kitkat disabled USB mass storage (without me knowing or I wouldn't have upgraded) any custom ways around this with new roms?
ATT i777 here
Click to expand...
Click to collapse
The official builds of CM11 and CM12.1 are safe to use with the i777. So are my unofficial builds (that don't include TWRP). Lanchon's kernels (with TWRP included) are safe to use as well. I highly recommend using one of Lanchon's modern kernels with whatever ROM you end up installing (they are basically stock kernels that contain bug fixes and are TRIM enabled). TRIM functionality is really essential to maintain good performance on this device (especially considering the i777 is now a few years old and runs a lot of current apps sluggishly).
I have an S959G (slight variation of the i777 - ROMs are interchangeable between these two models) with VYL00Mx19. I used @Lanchon's i777 kernels for years without a device superbrick. My understanding is that the superbrick bug basically occurred under one type of firmware TRIM command called Secure Erase. As far as I know, secure erase still remains bugged and dangerous, and for this reason is NOT used. Lanchon's TRIM kernels enable regular (unsecure) erase that is understood to be safe and still gives you the benefit of TRIM .
dimoochka said:
The official builds of CM11 and CM12.1 are safe to use with the i777. So are my unofficial builds (that don't include TWRP). Lanchon's kernels (with TWRP included) are safe to use as well. I highly recommend using one of Lanchon's modern kernels with whatever ROM you end up installing (they are basically stock kernels that contain bug fixes and are TRIM enabled). TRIM functionality is really essential to maintain good performance on this device (especially considering the i777 is now a few years old and runs a lot of current apps sluggishly).
I have an S959G (slight variation of the i777 - ROMs are interchangeable between these two models) with VYL00Mx19. I used @Lanchon's i777 kernels for years without a device superbrick. My understanding is that the superbrick bug basically occurred under one type of firmware TRIM command called Secure Erase. As far as I know, secure erase still remains bugged and dangerous, and for this reason is NOT used. Lanchon's TRIM kernels enable regular (unsecure) erase that is understood to be safe and still gives you the benefit of TRIM .
Click to expand...
Click to collapse
Thanks dimoochka, i'm probably going to give it a go this weekend.
Before I found this thread nothing worked; I tried 11,12 and 13 from other post and had weird things happen, 1st I lost my CWM 6.0.51 screen and was stuck with CM boot creen. 2nd E: failed to verify whole-file signature. 3rd it said I couldn't flash because I was on a i9100!? I think my device is possessed ... I have had issues with everything but cm-11-20150901-UNOFFICIAL-i9100 from your link, somehow this one worked! Thank you for posting this! I was about to buy a new phone :good:
Rhaegon said:
Before I found this thread nothing worked; I tried 11,12 and 13 from other post and had weird things happen, 1st I lost my CWM 6.0.51 screen and was stuck with CM boot creen. 2nd E: failed to verify whole-file signature. 3rd it said I couldn't flash because I was on a i9100!? I think my device is possessed ... I have had issues with everything but cm-11-20150901-UNOFFICIAL-i9100 from your link, somehow this one worked! Thank you for posting this! I was about to buy a new phone :good:
Click to expand...
Click to collapse
Glad this helped! Just so you're aware I haven't rebuilt this ROM for a good 9 months (and I am not even sure if the CM team is still patching old bugs in versions 11/12). If you're unable to get CM13 on the i777, I would definitely suggest buying a newer device for the sake of security. Nexus devices are basically the only option I'm aware of here since none of the other manufacturers actively maintain their ROMs. I retired my i777 in leiu of a Nexus 5X about 6 months ago.
Best of luck!
I wanted to ask, witch Roms are stable and support all features of Kenzo.
It seems that in several Roms there are different Problems,
from wakelocks and Battery drain,
over Wifi Problems
to missing Fingerprint or VolTE support.
Is it a Problem with Android 6.0 or also with 5.1 based Roms?
This should be in the Questions & Answers section. However, I have official CM 13.0 and I haven't encountered any of the problems that you mentioned above. If you read instructions carefully and understand what you're doing, you won't have any trouble as long as the rom you are flashing supports those features. If you head over to the Android Development section, you can see the features that each rom does and doesn't support. If the OP says it is supported but you can't get it to work, then the problem comes from your side. Before flashing make sure you have read and understood the required steps and have taken all the necessary precautions to avoid ending up with a "bricked" device. Let me know if you have any trouble.
jimakos98 said:
This should be in the Questions & Answers section. However, I have official CM 13.0 and I haven't encountered any of the problems that you mentioned above. If you read instructions carefully and understand what you're doing, you won't have any trouble as long as the rom you are flashing supports those features. If you head over to the Android Development section, you can see the features that each rom does and doesn't support. If the OP says it is supported but you can't get it to work, then the problem comes from your side. Before flashing make sure you have read and understood the required steps and have taken all the necessary precautions to avoid ending up with a "bricked" device. Let me know if you have any trouble.
Click to expand...
Click to collapse
Thanks for your reply,
yes i know what im doing (had Nexus 4 and flashed it more than a hundred times).
I normally check first post (+ following from OP) and the last sites of the Thread to see if there are bugs or not (cause "no bugs" in OP-Thread is not always correct).
But if CM13 is, so far, bug free and full featured (fingerprint and so on) than i will give it a try.
DarkAlucard said:
Thanks for your reply,
yes i know what im doing (had Nexus 4 and flashed it more than a hundred times).
I normally check first post (+ following from OP) and the last sites of the Thread to see if there are bugs or not (cause "no bugs" in OP-Thread is not always correct).
But if CM13 is, so far, bug free and full featured (fingerprint and so on) than i will give it a try.
Click to expand...
Click to collapse
It is. I've been using it for almost 1 month now, and I can say it's probably the most stable and complete rom for me. I also flashed the CM 13.0 supported firmware along with Radon Kernel and the device is blazing fast. As for the battery, I can get 1 week+ with minimal usage, and about 2-3 days with heavy usage which is pretty impressive for a hexa-core device with a 1080p screen.
jimakos98 said:
It is. I've been using it for almost 1 month now, and I can say it's probably the most stable and complete rom for me. I also flashed the CM 13.0 supported firmware along with Radon Kernel and the device is blazing fast. As for the battery, I can get 1 week+ with minimal usage, and about 2-3 days with heavy usage which is pretty impressive for a hexa-core device with a 1080p screen.
Click to expand...
Click to collapse
I was wondering about this "firmware" thing, never had to upgrade any software. Normaly just flash the Rom.
I was also wondering what's the difference to the unofficial CM13
DarkAlucard said:
I was wondering about this "firmware" thing, never had to upgrade any software. Normaly just flash the Rom.
I was also wondering what's the difference to the unofficial CM13
Click to expand...
Click to collapse
Well, if you are going to flash this rom you are going to have to flash the appropriate firmware too, since CM is based on it. If you flash the rom without flashing the firmware, you might end up with missing options in settings (I tried this and the "fingerprints" tab was missing). As soon as I flashed the firmware everything got fixed. Also, an official rom means that it is developed by a member or a group of members that have created the original project, while unofficial roms can be built by anyone. For example I can take a CM build and customize it the way i want and then release it to the public. This makes it an unofficial rom, since I'm not a member of the CM development team. But if a rom or an update releases on the CM website, then it is considered to be official.
By the way about the VoLTE support, quoting from OP Q&A:
Q) Is VoLTE supported? (Also useful if you have GApps related problems).
A) No. We use all proprietary blobs from MIUI Marshmallow alpha 'leaked' builds and those builds itself do not have it working. So we'll have to wait until Xiaomi fixes it in their marshmallow builds in future. Also we can't fallback to old LP radio blobs/libs and are not suited with current setup. #blamexiaomi
Click to expand...
Click to collapse
I guess you'll have to wait for Xiaomi to release a stable working MM build if you want voLTE support. :/
*** This project is now abandoned in favor of the LineageOS variant ***
This is a port of Cyanogenmod 14.1 for the Samsung Galaxy Tab A 7.0 (2016) LTE SM-T285. Cyanogenmod needs no introduction, it is one of the most popular aftermarket ROM distributions around.
5.1.1 is the best that you can get from samsung right now and it is not known if they plan to do any upgrades. I have absolutely no idea why samsung chose to stay with the outdated 5.1.1 mid 2016 when we already got 7.1 coming out. This custom rom is probably the best you can get if you want an upgrade from Lollipop. Performance on the latest build is also better, you be the judge.
As this is the first CM-14.1 release, I don't recommend you use this as a daily driver, but it should be good enough for some. Make sure you read the pending issues below and decide if this is acceptable to you before you flash this rom. This rom probably won't get much use out of some people until bluetooth is fixed.
Based off on Cyanogenmod 14.1 sources which is based on Nougat 7.1.
Device Tree:
=========
https://github.com/jedld/device_samsung_gtexslte.git
https://github.com/jedld/vendor_samsung_gtexslte.git
https://github.com/jedld/kernel_samsung_gtexslte.git
Update Dec 3, 2016
===============
Fixed GPS, Wifi Hotspot, Graphics issues, Calls, Camera,sdcard is now marked as adoptable.
Works:
- Wifi/SMS
- Audio
- Graphics with glitches (minor screen tearing, blank screen showing up on overlays)
- GPS
- Wifi Hotspot
- Incoming/Outgoing Calls
- MTP
Does not work:
- Bluetooth
- Camera
- LTE (Due to APN issues)
- Battery Meter not updating
Bugs/Known Issues
* Problems recording video
Other Notes:
- selinux permissive
Most of the issues are fixable, I just need more time and encouragement
SM-T280 Users: Unfortunately this rom would probably not work on it since the SM-T285 and SM-T280 have different kernels and slightly different hardware. I don't have access to this device so it would be hard for me to port it over. However I believe there are a lot of similiarities in the device tree that can be shared. If a dev with the SM-T280 is interested I can probably help.
Download
========
Remember flashing an unofficial ROM on your samsung device will probably void your warranty, Samsung representatives will probably not be able to help you as they are still stuck at 5.1.1 land as of now and have no idea how to handle a SM-T285 that is running 7.1.
As always flash this at your own risk. Make sure you have a copy of the stock ROM so that you have something to fall back to, which is highly the case when using an experimental rom.
See DevDB download section.
BUILD12032016
Note that this rom is pure stock and does not come with the Play Store or any Gapps, I suggest you download a micro gapps package separately and install it via recovery.
There have been reports that recent versions of open gapps don't work properly, it is advised to use older versions instead (e.g. open_gapps-arm-6.0-nano-20161109.zip)
Installation Instructions
==================
Perform a backup of all of your important files. This ROM is experimental and I will not be responsible for your loss of data.
Download the zip file and extract the tar.
Use Odin/Heimdall to flash the tar file to your device. If you are coming from stock oranother rom make sure you wipe first using TWRP. Coming from a previous version of OMNIRom for SM-T285 may not require a wipe, however please perform a wipe if you encounter problems.
Root and customization
===================
This ROM is a purely based on source and is not rooted out of the box. However you can easily root it by using TWRP to install the latest version of SuperSU.
If you want to customize this ROM and repackage it you may use this guide as a reference.
XDA:DevDB Information
CM-14.1 Samsung Galaxy Tab A 7.0 LTE (SM-T285), ROM for the Samsung Galaxy Tab A series
Contributors
jedld
ROM OS Version: 7.x Nougat
ROM Kernel: Linux 3.10.x
Based On: CyanogenMod
Version Information
Status: Abandoned
Created 2016-12-03
Last Updated 2017-01-31
Nice job!!!
Great job! The ROM is impressively fluid, and I particularly love the way it renders fine text, which I appreciate because I prefer DPIs of 140 to 160. Unfortunately, just like in the early iterations of OmniROM 6.0, the tablet will not connect to the internet over cellular networks no matter how much I tinker with APNs. It's a great build, nevertheless, and I look forward to future releases.
Thank you !! Will give it a try.
posting here too (as did on omni - realized this is the cm 14.1 board)...
"briefly tried the cm14.1....much better very fast response-on the omni the pull down was an issue (would also ask me to format the sd card)
noticed here too the signal tends to drop in and out (wonder if it is some power saving going on-it goes to full strength during a call)...speakerphone also does not work here but must say this is better than the omni even though data does not work"
keyboard much better here too
on both cm14.1 and the omni, the dialer tends to be have some lag when pressing the numbers (do it too fast and can get many errors)-minor thing understand this is an alpha and the omni is a beta
thanks
I can't get Soft Keys to work, worked fine on the Omni ROM, only problem I have come across so far.
mazmorbid said:
I can't get Soft Keys to work, worked fine on the Omni ROM, only problem I have come across so far.
Click to expand...
Click to collapse
needs some xml changes that needs to be compiled into the framework for that I believe. Though there are more critical bugs I need to fix with this 7.1 rom.
I wish I could help in some way, appreciate your work.
thank for your awesome work, but i cant download any app from Playstore, it's downloading for a long time, i tried many way to force it works but nothing change. Have any one meet this trouble?
khanhpt said:
thank for your awesome work, but i cant download any app from Playstore, it's downloading for a long time, i tried many way to force it works but nothing change. Have any one meet this trouble?
Click to expand...
Click to collapse
Try using an older gapps package like from october, recent versions seem to have issues.
jedld said:
Try using an older gapps package like from october, recent versions seem to have issues.
Click to expand...
Click to collapse
Thank Jedld, i has tried 27th,october version and it WORKS, thank.
I used the version as recommended in the Omni ROM, which was from the 9th of November, no problems with the app store or downloading apps either.
Any closer to another release ?
Nougat will take a while unfortunately
jedld said:
Nougat will take a while unfortunately
Click to expand...
Click to collapse
hello jedid any hope here for data on cm14.1? Thanks
https://review.cyanogenmod.org/175308
https://review.cyanogenmod.org/175307
https://review.cyanogenmod.org/175306
http://forum.xda-developers.com/moto-g-2014/orig-development/rom-cyanogenmod-14-0-t3458931
http://forum.xda-developers.com/mot...ent/rom-cyanogenmod-14-1-moto-x-play-t3515135
mac231us said:
hello jedid any hope here for data on cm14.1? Thanks
https://review.cyanogenmod.org/175308
https://review.cyanogenmod.org/175307
https://review.cyanogenmod.org/175306
http://forum.xda-developers.com/moto-g-2014/orig-development/rom-cyanogenmod-14-0-t3458931
http://forum.xda-developers.com/mot...ent/rom-cyanogenmod-14-1-moto-x-play-t3515135
Click to expand...
Click to collapse
Tough to know for sure. Hopefully some progress will happen before christmas.
Sent from my Samsung SM-T285 using XDA Labs
jedld said:
Tough to know for sure. Hopefully some progress will happen before christmas.
Sent from my Samsung SM-T285 using XDA Labs
Click to expand...
Click to collapse
not knowledgeable here on CM and how things are done but those links for the CM...looks like they got merged just 6 days back. Or maybe these are not relevant? just asking/wondering thanks
mac231us said:
not knowledgeable here on CM and how things are done but those links for the CM...looks like they got merged just 6 days back. Or maybe these are not relevant? just asking/wondering thanks
Click to expand...
Click to collapse
Those patches didn't help unfortunately Though I've fixed network type selection in CM-14.1 already, unfortunately data connection still won't come online due to errors related to APNs. Seeing as this was working perfectly in CM-13 this could be a CM-14 or Nougat related change, it will take a while to figure out what that is. As for bluetooth I was able to get it to turn on, however it is still unable to detect/pair to any device, this is also something that was working in CM-13.
any hope on porting this to t280?
klemen241 said:
any hope on porting this to t280?
Click to expand...
Click to collapse
I don't have the T280 so I wouldn't know. There are devs that are trying or have tried to work on it, not sure about their progress.