Hi all,
On a number of occasions, I've used Market apps to control the screen brightness, either manually (like a brightness widget) or scheduled (using Timeriffic - a great tool for automatic profile changes throughout the day).
Apparently, these apps are not aware of the correct minimum brightness supported by the Leo, making it too easy to go too low, which essentially disables the display completely.
Touch still works, so if I'm lucky enough to remember the location of the widget/slider/controls, I may be able to turn brightness back up to a "sane" level.
For example, Timeriffic turns the screen off with a brightness level of 10% - 15% is the lowest working setting.
If I'm unable to fix it this way, I'm basically forced to reset. The problem is that Android *remembers* this setting after a reboot, and reapplies it just when the device is vibrated slightly at the "Android" logo animation. Thus, with a black screen, it is impossible for me to unlock the SIM, hard to unlock the screen lock, and virtually impossible to correct the brightness setting. I need to remove my data.img ("hard resetting" Android) and restore what I can from backups.
The problem also seems to occur with the standard screen dimming which occurs at about half time before the "screen off" setting. I can see the display start to dim, then it suddeny turns off. In this case, however, Android of course reverts to normal brightness at the touch of the screen or press of a button.
On a related note, I have experienced (like right now) that brightness range used by Android is much dimmer then normal. That is, using the regular brightness slider in Settings, I can only vary between almost invisible (min) and quite dim (max). Curiously, in this situation, the display can get *much* dimmer than normal, without becoming disabled.
Any ideas on these issues would be most welcome!
Workarounds found later in this thread:
- Shine a bright light on the screen - the graphics are still there if you look really hard. It's not a joke!
- Use Screencast in Droid Explorer to "remote control" your Android
- adb shell "echo 255 >/sys/class/leds/lcd-backlight/brightness"
ugumba said:
Hi all,
On a number of occasions, I've used Market apps to control the screen brightness, either manually (like a brightness widget) or scheduled (using Timeriffic - a great tool for automatic profile changes throughout the day).
Apparently, these apps are not aware of the correct minimum brightness supported by the Leo, making it too easy to go too low, which essentially disables the display completely.
Touch still works, so if I'm lucky enough to remember the location of the widget/slider/controls, I may be able to turn brightness back up to a "sane" level.
For example, Timeriffic turns the screen off with a brightness level of 10% - 15% is the lowest working setting.
If I'm unable to fix it this way, I'm basically forced to reset. The problem is that Android *remembers* this setting after a reboot, and reapplies it just when the device is vibrated slightly at the "Android" logo animation. Thus, with a black screen, it is impossible for me to unlock the SIM, hard to unlock the screen lock, and virtually impossible to correct the brightness setting. I need to remove my data.img ("hard resetting" Android) and restore what I can from backups.
The problem also seems to occur with the standard screen dimming which occurs at about half time before the "screen off" setting. I can see the display start to dim, then it suddeny turns off. In this case, however, Android of course reverts to normal brightness at the touch of the screen or press of a button.
On a related note, I have experienced (like right now) that brightness range used by Android is much dimmer then normal. That is, using the regular brightness slider in Settings, I can only vary between almost invisible (min) and quite dim (max). Curiously, in this situation, the display can get *much* dimmer than normal, without becoming disabled.
Any ideas on these issues would be most welcome!
Click to expand...
Click to collapse
I don't know these app(s) but if they are writing their settings and configured values into a ini or settings file, than you might be able to connect via adb and change the setting by this way.
With tools like Droidexplorer or ADB magic, browsing through the files should be very comfortable and you might find the correct file.
this happens on regular android devices ...i have a couple of them
thatruth132 said:
this happens on regular android devices ...i have a couple of them
Click to expand...
Click to collapse
What happens? That brightness is set too low, essentially disabling the screen, so you're forced to hard reset or perform some root magic? How do you cope with it? Or does it happen that the permitted brightness range is just dimmer than usual?
Btw, until there is no light-sensor support in kernel, you can't use such apps for the brightness
Stills a good advice
I have had the same issue with the brightness range being too low. The max brightness is really dim and the colors don't seem right. That may just be the dimming effect though. If I restart the phone it seems to take care of this. I have not had the screen go below the minimum level and turn off though.
is there a fix for this. i just experienced this problem
I experienced the same with Multicon widgets.. had to delete Android and start over
somebully said:
I experienced the same with Multicon widgets.. had to delete Android and start over
Click to expand...
Click to collapse
Oh wow, not good at all, crap...
so that means if i do that i'll lose everything huh?
Theres no way to restore the factory brightness or factory settings for the android?
aznsHD2 said:
Oh wow, not good at all, crap...
so that means if i do that i'll lose everything huh?
Theres no way to restore the factory brightness or factory settings for the android?
Click to expand...
Click to collapse
As long as you have a working WinMo it should be possible to edit the values of brightness, but I have no idea where this information is stored.
Deleting Android folder and unzipping again is esentially restoring to factory settings.
yea this happens to me all the time, its a *****. it cuts off at exactly 12% for me. what i do is have aldiko(a book reader) on the home screen. if i click on it and open a book i can just swipe on the left side of the screen to adjust brightness. since i know that its on the home screeen on the right side middle, i can usually find my way back to it.
somebully said:
As long as you have a working WinMo it should be possible to edit the values of brightness, but I have no idea where this information is stored.
Deleting Android folder and unzipping again is esentially restoring to factory settings.
Click to expand...
Click to collapse
which means that i'll lose everything such as data correct? new contacts etc. msgs...
any thing on this... isnt their a file in the android folder that i could maybe replace to restore to factory settings.
and could someone post a screen shot of their phone so i know where the numbers for the pin code lockscreen. tryin to get past that, then i can adjust my brightness
LOL I experienced it one time. And I must delete data.img to restore the phone. After this, I don't use any brightness tools (except ones already in the Android build).
If anyone have solution, please point us
Well i was able to get my screen back to normal. lol.
I didnt delete the data.img, i simply copied it and then removed it, started a fresh install, and then just marked on my screen where the numbers were, turned it off, put the old data.img back. Followed my marks, and was able to unlock it and then found the power control widget. And bam! screen back to bright...
This might work for you!
Erm... In similar circumstances I found this worked...
I was trying out different Android builds and I found a screen brightness widget. It had various available levels of brightness, one being 0%. As soon as I selected it I felt pretty stupid as true to it's word it gave me 0% brightness placing me in a similar position to the OP.
My Solution. I used my (very bright) led torch to light the screen. By playing around with the angle and beam width I found I could just make out the on screen graphics enough to re-adjust the brightness level.
Simples!
Just as " Justblair " said .. you can place your device under a very bright light thus you'll be able to see the screen and what it's showing .. idk what build you guys are using but in cyanogen you can adjust the lowest dim level so that any app or widget tries to set the brightness to 0% it's automatically set to your preset, 15% for instance.
I've only faced this problem once
Is it absolutely necessary to flood the main thread with all these useless noob posts?
It really has nothing to do with Android development on HD2 and should be posted in the General section IMO.
kawazaki said:
Just as " Justblair " said .. you can place your device under a very bright light thus you'll be able to see the screen and what it's showing .. idk what build you guys are using but in cyanogen you can adjust the lowest dim level so that any app or widget tries to set the brightness to 0% it's automatically set to your preset, 15% for instance.
I've only faced this problem once
Click to expand...
Click to collapse
Cyanogen allows you a max dim level of 26 - which is too little on the HD2.
In Tasker, 30 is the lowest setting that still provides light. Maybe Cyanogen can be patched for the HD2 in coming builds?
Thanks for the tip on shining a bright light on the screen.
Another tip is to use Droid Explorer's "Screencast" feature, to view and control your Android's screen on your PC desktop. Of course, the brightness setting has no effect here.
Hey Guys,
I have figured out how to get rid of the ugly green screen issues with 3rd party kernels for MIUI.
Goto Settings
Display Settings
Turn automatic brightness on
Adjust the slider until the screen is at the lowest (before it turns green)
Go into advanced mode
Turn on Use Custom under Light levels
Light level to dim - set to 10
This should fix all the issues with green screens!
I never had any green screen on miui, with official or neo/vorbeth/glitch kernels.
I was curious and tried what you posted above, and I can't do step 4
3. Turn automatic brightness on
4. Adjust the slider until the screen is at the lowest (before it turns green)
If auto brightness is set to "on", I can't slide..
filou75 said:
I never had any green screen on miui, with official or neo/vorbeth/glitch kernels.
I was curious and tried what you posted above, and I can't do step 4
3. Turn automatic brightness on
4. Adjust the slider until the screen is at the lowest (before it turns green)
If auto brightness is set to "on", I can't slide..
Click to expand...
Click to collapse
That's odd, maybe the new versions fixed this problem. I guess coming over from cm7 if you have custom brightness it will turn to green with miui
Sent from my Xoom using Tapatalk
it worked, thanks! my dim level was set to 5, changing it to 10 worked perfectly.
strange... never had this issue when i was on miui and that was yesterday.
i have the same problem, i went at a local repair store, and the guys overthere told me that the colour module is broken !!! anyone knows something about this???
they say that in my case i need to replace the screen in order to fix this issue... if anybody have other idea...
thanks in advance !
phone samsung galaxy s1 gt-i9000 stock rom not rooted
Hi, i have a problem with auto brihtness of my xoom.
If i set the display to auto brightness, it increases the brightness when there's more light, but it don't decrease the brightness if there is less light, until i lock and unlock the screen.
I've a 3g xoom with the latest 3.2 firmware.
Is there any solution?
Someone can help me?
renton82 said:
Hi, i have a problem with auto brihtness of my xoom.
If i set the display to auto brightness, it increases the brightness when there's more light, but it don't decrease the brightness if there is less light, until i lock and unlock the screen.
I've a 3g xoom with the latest 3.2 firmware.
Is there any solution?
Click to expand...
Click to collapse
I haven't heard of that issue, so I don't know of a solution. Are you completely stock, with no modification?
This is stock behaviour. Simply turn the display off and back on if you want it to re-set the brigtness to a lower value on the stock rom.
Thank u very much for your reply! I thinked that was mine faulty...
For now i solved installing Auto lux, that it's completely customizable(u can set a % of brightness for any kind of external "lux") and works very well.
Is there another way to solve it? Now i tried the tiamat kernel, but without any resutl.
I have a problem with my Nexus 4. I cannot increase the brightness. To try to eliminate typical software problems I wiped the phone and reinstalled PA 3.99 RC2 (not nightly) but I cannot increase the brightness beyond a barely legible level!! Does anyone have experience with or a solution for my problem?
Maybe its locked on AUTO brightness? try to put it near a lamp see if the brightness change...if its not on auto switch to auto and turn it off and then try to swipe for higher brightbess... Also - did you check if its works on STOCK rom?
PsyOr said:
Maybe its locked on AUTO brightness? try to put it near a lamp see if the brightness change...if its not on auto switch to auto and turn it off and then try to swipe for higher brightbess... Also - did you check if its works on STOCK rom?
Click to expand...
Click to collapse
I completely wiped the phone and went back to stock 4.3 with no change. It doesn't respond to changes of light. I am beginning to think it must be a hardware problem.
Hello everyone,
I really need help with my Galaxy S4 i9505. Its past warranty time so that's not an option.
Basically problem is in screen brightness. When i adjust slider in higher brightness settings, screen becomes very washed out with pale colors and some lines in background. Its hard to explain so i'm posting video below.
I tried everything, hard reset, soft reset, flashed many different roms, including stock... no cure so far. Even in recovery screen is messed up, but in download mode everything seems to be OK.
Auto brightness is out of use so, currently i'm using slider adjustment where screen is somewhat usable.
Please, help!