Bt keyboard and mouse stutter while on wifi - Xperia Z2 Tablet Q&A, Help & Troubleshooting

Are there any hacks, settings, or drivers that can be adjusted in either the os, or bt stack, or wifi drivers to help reduce the repeating key/mouse stutter that seems to be common in KitKat when on wifi simultaneously? Keyboard pro is a help but it is still very hard to use the bt peripherals effectively whilenthey are jumping all around the screen......
I have heard this is only an issue on 2.4 GHz networks, is that true?

The wifi and Bluetooth are on the same chip. They don't like to run at the same time! It's a hardware issue, not software that no manufacturer seems to care about. Every Android device I have used has issues when using both at the same time. For example, Bluetooth headphones for watching youtube videos means the wifi cuts out every few minutes. A possible solution would be a cheap usb Bluetooth dongle via USB otg.

Use 5 GHz Wifi, then the problem should be solved.

hasenbein1966 said:
Use 5 GHz Wifi, then the problem should be solved.
Click to expand...
Click to collapse
My gateway router only offers 2.4ghz. Do most home network devices, ie: Tv, blueray, printers, all support 5 GHz or is that only on new or special devices?

A router which has 5 Ghz WiFi always also has 2.4 Ghz because indeed only some devices support 5 Ghz, so a router with only 5 Ghz would be very limited in usage.

Related

[Q] N-Wireles with FW 2.1.02?

Hi
After updating to FW 2.1.02 I hoped to get a n-wireless speed connection with my router (other devices connect in n speed without problem) as the changelog of the fw 2.1.02 says that n-wireless is now enabled.
But I still have a 54 Mbit speed mentionned in the connection details.
I have a dualband router. Both freqs are configured to have 300 Mbit.
The A70 doesn't see the 5 MHz network (because I think it has a 2.4 GHz chip inside).
Other devices connect to my router with n-speed on the 2.4 GHz net.
How about you? Any success after fw upgrade or still 54 Mbit connection?
Any solution for that "problem"?
(I want n-connection, when the A70 says it has a n-chip inside...)
I have the same issue !!!! i'm using a sagem fast 3304 >>300mbps
Archos when will we have wifi-N SUPPORT !!!!! And Flash support ....... ¿
Not working for me either with wireless n.
I'm only seeing 54mbit so far.
Same here.
This is the answer from a member of the R&D team of Archos:
courville said:
wifi chipset supports single stream thus caps at 65MBps raw PHY rate. It has also all aggregation features of the IEEE802.11n standards that enable to save the silent periods over the air and increase throughput efficiency.
Click to expand...
Click to collapse
kitsune44fr said:
This is the answer from a member of the R&D team of Archos:
Click to expand...
Click to collapse
And thats exactly what my wireless router shows me as connection speed for the archos: 65 mb/s. So it's definitely a n-connection but limited to 65 MB. So there will probably never be a faster speed with that device, as the Archos guy points out that it's a hardware limtation of the chip .
One more proof that it's an error to always see 811n as synonymous to 300 MB/s.

[Q] real Wifi n on gen8

hi,
here is a question for gen8 developers :
I read this answer on wifi n from Archosfans :
Archos Support wrote:
When connecting to a wireless network there is a certain connection speed
attained. The better quality signal network the higher the connection speed
possible. B < G < N when it comes to wireless network signal connection speeds.
54mbps was the max speed possible with a G-Network for wireless. N goes a lot
higher than this. Our unit is capable of connecting to an N-Network however we do
not allow a connection speed higher than 54mbps to conserve battery life. Thus if
your N-Network is broadcasting higher than that and will not allow a connection
speed of that low you won't connect
Is there any chance to get a real Wifi n by modifying the firmware?
thank you.
bach0405 said:
hi,
here is a question for gen8 developers :
I read this answer on wifi n from Archosfans :
Archos Support wrote:
When connecting to a wireless network there is a certain connection speed
attained. The better quality signal network the higher the connection speed
possible. B < G < N when it comes to wireless network signal connection speeds.
54mbps was the max speed possible with a G-Network for wireless. N goes a lot
higher than this. Our unit is capable of connecting to an N-Network however we do
not allow a connection speed higher than 54mbps to conserve battery life. Thus if
your N-Network is broadcasting higher than that and will not allow a connection
speed of that low you won't connect
Is there any chance to get a real Wifi n by modifying the firmware?
thank you.
Click to expand...
Click to collapse
To the developement thing i can't say anything,
But 54 mbit is 6.75 mb per minute ;-)
this is very fast!
I use dsl 32.000 on my a101 and it worked for me.
Thank you for your answer.
I get about a real 2 Mb/s with a 54 Mbps speed with an Archos 70 it. With my laptop, I get 6 Mb/s ( around 150 Mbps). That's a huge difference !
bach0405 said:
Thank you for your answer.
Click to expand...
Click to collapse
Then please klick thanks
I get about a real 2 Mb/s with a 54 Mbps speed with an Archos 70 it. With my laptop, I get 6 Mb/s ( around 150 Mbps). That's a huge difference !
Click to expand...
Click to collapse
Oh you've fast internet
Mhm i think we could change the wi-fi binarie so we can support faster internet
Buti can't do that.
Idont have experience with that..
Wow seems some people are actually getting response from archos-support i've read in one of the archosfans threads that the chipset does not support the full N speed..however with this comment of achos...
The problem with all the information on the internet is to get the right information in the right order and draw the right conclusions.
1. The chipset in the Archos is able to connect to a Wifi-N only AP
2. It has a maximum Connectionspeed of 65MBit/s
3. Archos decided to lower the maximum speed to 54MBit/s for energieoptimization
4. Because of this it doesn't connect to a AP that wants a minimum of 65MBit/s
So once and for all, Archos can connect to Wifi-N.
The hardware would be able to do 65MBit/s
Even then to get more then 2MByte/s is not likely to happen as all downloads are going to the ssd/sd and this two together ( wifi + "hd" access ) with this processor and the sorounding components wont be faster.
@Lennb:
Begging for thanks is always a bad idea.
fzelle said:
Begging for thanks is always a bad idea.
Click to expand...
Click to collapse
But it works

Alternative reason for some wifi issues

I was wondering as tfp only supports 2.4 ghz wifi, it could be slowing down wifi. If you have router that supports both 2.4 ghz qnd 5 ghz technics and some device uses the 5 ghz technic, wifi devices with only 2.4 ghz will slow down.
Of course I don't mean that this causes wifi problems but in some cases this might is making it even worse
Hopefully someone understood what I have to say
EDIT: the title could be changed to better as that might be a bit misleading
Sent from my sgs2 running cm9

Streaming 1080p over Wifi - what is the bottleneck here?

Device 1) Samsung Galaxy S3, Quad Core A9, Mali 400
Device 2) iPad 3, Dual Core A9, PowerVR 4 core
Networking: Dual band router (situated 1 metre away), gigabit server plugged into gigabit switch
(I can stream 1080p on my PC and Macbook Pro fine (due to stronger CPU's vs ARM design?))
Both mobile devices can stream 720p fine
I get issues when trying to stream 1080p. Obviously the Galaxy S3 only has a 720p screen anyway, but I still wanted to see if it was possible
I have tried multiple programs on both devices. At 1080p, the iPad can only stream the audio. No picture. The Galaxy S3 is able to stream both audio and video, although the video is choppy
What is the bottleneck here? Is it due to poor software? Or are the ARM A9 CPU's too weak for this kind of thing? I know they can play local 1080p content perfectly fine, but there seems to be issues with network content
Thanks!
Any ideas?
Sent from my GT-P6810 using xda app-developers app

150Mb wifi link

Hi there
I'm trying to achieve the best bandwidth over wifi which i need for local file transfer, but strangely enough my Redmi note 4x (Mido) can't get any higher than 150 Mbps link speed over wifi.
My router Asus rt-ac3100 can handle way more than that.
Looking at SD625 specs reveal that the SOC can peak up to 364Mbps.
I used a bunch of 7.1 and 8.1 ROMs but they all have the same results
So i'm wondering what is the limiting factor, and if there is anything to bypass it
The phone's WiFi chipset only supports N bands. It's a/b/g/n only. Though you'd think it'd connect a bit higher, since N allows for 600Mbps. My laptop is stuck with an Intel a/b/g/n card and I get a link speed of 240 to 270Mbps when connected via 5 Ghz.
How far away is your router? My router is in my room, where I am right now with all my devices. Though the link speed on my Note 4 is still capped to 150Mbps. Strange. Don't know if it's a fixed hardware limit or something else. I previously checked on MIUI and now on LOS 15.1. Both show the same 150Mbps link speed.
My LeEco x722 (SD820, 802.11ac WiFi) got 866Mbps easily. I also had another Snapdragon 625 phone, but with AC WiFi. It too got a pretty high link speed of around 600Mbps. I think the issue is that the wireless chipset in the Note 4 is very poor.
sk8223 said:
The phone's WiFi chipset only supports N bands. It's a/b/g/n only. Though you'd think it'd connect a bit higher, since N allows for 600Mbps. My laptop is stuck with an Intel a/b/g/n card and I get a link speed of 240 to 270Mbps when connected via 5 Ghz.
How far away is your router? My router is in my room, where I am right now with all my devices. Though the link speed on my Note 4 is still capped to 150Mbps. Strange. Don't know if it's a fixed hardware limit or something else. I previously checked on MIUI and now on LOS 15.1. Both show the same 150Mbps link speed.
My LeEco x722 (SD820, 802.11ac WiFi) got 866Mbps easily. I also had another Snapdragon 625 phone, but with AC WiFi. It too got a pretty high link speed of around 600Mbps. I think the issue is that the wireless chipset in the Note 4 is very poor.
Click to expand...
Click to collapse
The router is in the same room as i am with no obstacles between.
I found (at gsmarena.com) that Mido only support up to wifi N (no AC) even though the SoC support AC standard, probably due to the implantation of cheap radio hardware, and because most phones optimized for efficiency it run only on a single radio band that is why 150Mbit and not the 300/600mb advertised even for wifi N standard.
The news left me disappointed, for a top midrange phone not to support AC, i guess something to consider in my next phone
The twin brother of mido the Mi A1 which is literally a Redmi note 4x play edition support AC wifi. Moreover the Mediatec version (nickel) also support AC wifi, so why xiaomi left the redmi note 4x without?
The more i dive the more i feel betrayal.
kmaljane said:
The twin brother of mido the Mi A1 which is literally a Redmi note 4x play edition support AC wifi. M1qoreover the Mediatec version (nickel) also support AC wifi, so why xiaomi left the redmi note 4x without?
The more i dive the more i feel betrayal.
Click to expand...
Click to collapse
I believe it is a driver from the firmware and/or kernel that doesn't allow full speed N or AC to work. I have looked into most of the software and cannot find what is stopping it.
Try wired connection by buying usb adapter maybe? Have you tried flashing latest dev firmware along with rom that might help.
RapGodS said:
Try wired connection by buying usb adapter maybe? Have you tried flashing latest dev firmware along with rom that might help.
Click to expand...
Click to collapse
Wired connection is not an option for a phone. I tried both stable and dev firmware with a bunch of roms and it is always the same 150 Mbit link.
Gsmarena listed the phone as Wi-Fi 802.11 a/b/g/n enabled device. So it it official, no AC for mido

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