App for making only part of screen visible on display off? - Android Q&A, Help & Troubleshooting

I think this would be great hack/mod for my GNex for displaying notifications if one can make only part of the AMOLED screen visible when the display is off. Apps like battery monitor and resource monitor would look great then. This region can also be used for a RSS ticker display. Is there any such app/mod/hack aready?
Cheers.

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[Q] Screen colours are off!

I just noticed that my S2 screen has distinct green tint to it compared to my desktop and my iPhone. Is this normal for a Super AMOLED+ screen and is there and app or method to do a little colour correction to the screen so I get a more accurate display? I'm a designer/photographer so it would really help to have the screen as accurate as possible!
settings - display - screen mode. change as desired
Should get you a little closer to what you are after
radicalgel said:
I just noticed that my S2 screen has distinct green tint to it compared to my desktop and my iPhone. Is this normal for a Super AMOLED+ screen and is there and app or method to do a little colour correction to the screen so I get a more accurate display? I'm a designer/photographer so it would really help to have the screen as accurate as possible!
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As was said....
settings - display - screen mode.
I find Movie to be the most accurate. The other two options are oversaturated.
donalgodon said:
As was said....
settings - display - screen mode.
I find Movie to be the most accurate. The other two options are oversaturated.
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I used to only use movie then one day after flashing a new rom i left it on standard now movie seems to washed out for me
But yea, dynamic is far to blow your face off bright.

[Q] Can the brightness be lowered even further? (CM7)

Hey,
I'm running on CM7. Can the brightness on the phone be set lower than the slider-bar allows? I'm often inside dark rooms and would prefer the brightness to be at a lower level. I know the phone can be less bright, because when you turn Desk Clock mode on (from within the Clock App) it set the screen to a super-low brightness. I was wondering if I can have that brightness for normal use.
Thanks.
settings > cm settings > display > automatic backlight > use custom / edit other levels
not sure what settings would accomplish this, or if it is even possible - but those are the settings you are looking for.
I have -no- idea what the settings do, or how to enable it at all. I tried setting everything to the lowest it goes to (2) but it did nothing... Hmm.
Look for "screen filter" app in the market.
Sent from my MIUI Infused 4G
xbuca80 said:
Look for "screen filter" app in the market.
Sent from my MIUI Infused 4G
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Won't this just set a "filter" on top of the screen, making it darker? It won't really affect the actual backlight, will it? I was hoping to both make the screen darker, and save a bit of battery. Don't know how screen work, just what I think is happening.
According to the description and some users it saves battery on amoled screens...but I haven't tested it...you could be right.
Sent from my MIUI Infused 4G
Yeah, I downloaded it, and it didn't do anything at all...
Sent from my SGH-I777 using XDA App
A bump to this. Anyone know of a real way?
Sent from my Galaxy S2 i777 CM7 Nightlys
I believe the effect in the desk clock is essentially the same as Screen Filter. It just darkens it. Just like Desk Clock on the Captivate, evident because the status bar stays the same brightness but the clock lowers. That's why the CM7 app makes the status bar disappear, so the app can darken itself and you won't notice it's darker because it doesn't affect the system and the status bar would have stayed the same brightness. Screen filter is a wonderful option. I had it to "hold menu button" in CM7 settings.
Blaze9 said:
Won't this just set a "filter" on top of the screen, making it darker? It won't really affect the actual backlight, will it? I was hoping to both make the screen darker, and save a bit of battery. Don't know how screen work, just what I think is happening.
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I don't think AMOLED screens have a backlight, that's why they're LED and not LCD.
I have the same problem: at night, the screen is too bright. Cyanogen has an option to only display one of the 3 primary colors, so you can turn on only the red subpixels. Sure, you are left with a monochrome screen, but it is dim and uses less power.

Second Screen dimming

Just got the V10 and the second screen dims after 2 or 3 seconds after turning off the main screen. Is there a way to adjust the timing when the second screen dims? The dimmed second screen is almost unreadable because it is so dim.
Ditto, the idea that this is a replacement for a notification LED is really damaged by the dimming. (It's not just me that bought the phone based on that idea, right?) What I've found so far:
With the screen brightness set to 0, the second screen dims fully a few seconds after sleeping. Icons become about as noticeable as dust reflections.
With the screen brightness set to 100, the second screen follows the ambient light sensor after sleeping. Under bright light it turns itself up to the point where it's useable.
I've been playing with all the LEDs that Light Flow sees, but at least without root, nothing has any effect. I might look through the /sys files later. We probably need to get root first to figure this out.
On auto brightness it seems to be that the device adjusts the dimmed display for the ambient lighting? It's not the easiest thing in the world to see, but it's certainly not hard for me to see what notifications I have. I really prefer this over a colored LED.
Light Flow settings
For what it's worth, here's my current setup, now that the T-Mobile H901 is rooted. This does no one without root any good, and I don't know how it would translate to similar LED managers. I've been using Light Flow since the Sapphire (MyTouch 3G).
Light Flow device settings: check direct mode, root mode, and run every command as root. The Nexus 5 force reset option is checked by default and I don't know if that's relevant (no calls yet). Everything else in the menu is unchecked.
Let Light Flow control lcd-backlight-ex.
In a notification, set that "LED" to Solid and to 255 brightness. Check Enable Mixer and App controlled flash. With that last setting, the app will reset the brightness every few seconds even if the system dimmed it due to an ambient light change.
Now I need to edit some notification icons to be big and colorful. I wonder how this will impact battery life? Now the app is going to be awake all the time.
I've noticed that today on auto brightness the second screen will increase in light but not much. It also is not as smoth of a transition as on main display. It kinda jumps up real quick..
Yes for me I've noticed on Auto brightness the second screen will dim in a dark room and if you turn off your phone while in that room then come out... The second screen is still dim.... It's like th second screen doesn't respond to the light sensors at all unless the main screen is on.
Sent from my LG-H901 using XDA Free mobile app
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
m0n0t0ne said:
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
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Another one of many things that it would be cool to see baked into a custom stock rom. Good stuff. I wonder if Cloudyfa might come over and cook on this awhile. I have always loved his stock Roms....
Sent from my LG-H901 using XDA Free mobile app
m0n0t0ne said:
It would have been nice if lg included the capability to change the second screen settings such a brightness or text color.
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Color would be cool. A classic CRT bright/lime green, for instance, would probably show up much better than the white.
We need to get on their forums with these ideas. Maybe some will get squeezed into an update
An app which turns off auto dim in case screen is off would be pretty much help. Maybe I'll develop one.

Ghosting issue ? ?

So is it pretty obvious , or does ghosting usually happens on low brightness on every AMOLED display or is this phone only suffering from this ?
(I saw ghosting while I was horizontally scrolling a black picture of a gray background).
Can anyone confirm this for me ? ( Not a huge issue though , it doesn't happen after the brightness is increased)
Try with this image in lowest brightness
Zoom in and move it left and right you will see a trail of weird color trailing the black circle.
its normal for amoled displays
almost all amoled screen leave purple trails when switching from pitch black to some other color pixels.. don't worry about it
Ya when scrolling in app drawer the icons looks like wobbling.
Yes this has been the case in my Realme XT as well. When you have black background in the app drawer and there is any app icon that is dark you see the icons changing their shape while we scroll.
Even in YouTube when you turn on the Dark Mode and there is any video that is pitch black you may see it leaving a trail when you scroll through the feed. This is more often when screen is in low brightness. Is this issue for all other phones with Amoled panel or only with Realme XT ?
Amoled panels basically has the lowest response time in any display technology format except "Ink Display". Every individual pixel lights up individually from switch off (black) to on (any color). Higher the brightness means higher the color spectrum shining into your eyes and thus it let you see no ghosting while at peak brightness. It's still happening but we dont usually see that clearly. Ghosting is very natural phenomenon of Amoled technology. Also these budget Amoled panel tends to big fan of burn out. So make sure you are using live wallpaper that changes or moves (stock one that comes with the ColorOS is good enough).

"Imperfect" Ambient Display Behavior

So before upgrading to the Nord N105G I had a OnePlus 6T, which was a very reliable phone. I had it since launch, and I got very used to the behavior of the ambient display.
I didn't have any of those new-fangled features enabled like Smart Lock or Face Unlock, but I did use the fingerprint scanner but that's neither here nor there.
The display behavior I expect is that a single-tap will turn on the display (from completely off) to the black ambient display with the clock on it. Double tap to wake works just fine, but single tap does not.
Also possibly related: On the 6T I could use quick gestures to launch the flashlight etc from either a display-off state or the ambient display. However, on the Nord, quick gestures do not work on the ambient display - they can only be triggered when the display is fully off. Is anyone else experiencing these issues?
Also, I'm curious. If I use Titanium Backup (rooted) to back up the old Ambient Display app from the OP6T and then restore it to the new phone I wonder if they'd play nice. Might fiddle a bit...
No.
This isn't the same phone by a long shot and the display is one of those big changes.
Ambient display and it's features are limited to oled (and derivatives) screens.
At most, you'd be lucky if the app even registers.
ninjasinabag said:
No.
This isn't the same phone by a long shot and the display is one of those big changes.
Ambient display and it's features are limited to oled (and derivatives) screens.
At most, you'd be lucky if the app even registers.
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I totally get what you're saying, and you seem knowledgeable, so you're likely right. However, other than the quirks I've described the Ambient display works exactly the same as it did on the OP6T.
For example, Plus Beat still works even though it hasn't been supported since shortly after the release of the 6t. It was designed for an OLED display as a replacement for a standard notification LED (Lighting up a few pixels on an OLED screen IS essentially a notification LED). Plus Beat will wake the N105G's ambient display and display the exact same notification info; obviously its lighting up the entire display to do this, but whatever foundation was originally laid to wake the ambient display doesn't seem to have changed.
So, when I find the time to flash the newest TWRP and make a backup, I will fiddle with it anyway, because contrary to your statement, I think the OP6T ambient display app will replace the N105G's app just fine. Whether the native Android settings will hook into it functionally or not is a whole different beast.
Ambient Display is useless for IPS screens. I use Glimpse Notifications, it normally turns on the screen and a bunch of settings
Alexey71 said:
Ambient Display is useless for IPS screens. I use Glimpse Notifications, it normally turns on the screen and a bunch of settings
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I don't understand why you'd prefer lighting the lock screen with Glimpse Notifications when Plus Beat still functions as a notification LED (with info) on the black background ambient display. It's not true black obviously because it's not an OLED display, but it's pretty close.

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