BUG? Screen Backlight stays ON after unplugging charger!

This is a discussion on BUG? Screen Backlight stays ON after unplugging charger! within the Droid X Help forums, part of the Droid X Discussion category; Has anyone noticed that under certain conditions the screen backlight stays ON indefinitely after unplugging charger?? Plug the Droid X into the charger, turn the ...


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Thread: BUG? Screen Backlight stays ON after unplugging charger!

  1. #1
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    BUG? Screen Backlight stays ON after unplugging charger!

    Has anyone noticed that under certain conditions the screen backlight stays ON indefinitely after unplugging charger??

    Plug the Droid X into the charger, turn the screen OFF (touch the top On-Off button), leave phone to charge, unplug the charger. Look carefully at the apparently dark blank screen in a dark area--The screen backlight is ON and remains ON (does not time out). If left alone the battery will run down quickly.

    Log into the phone and log out--the screen will return to normal behavior.

    This appears to be a hardware BUG.

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    this has happened for ages. i make it a habit to just press the power button twice when unplugging. you dont even need to log onto the phone. just wake it and sleep it. no fix.
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    Ya, this happens randomly to me too. I thought it was my rom until I flashed stock for a bit and it was still happening. Oddly enough it stopped happening.

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    Thanks

    I guess I will live with ON-OFF after unpluging charger.

    Thanks

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    Mine does it every time I unplug it. I believe it's a firmware bug (as opposed to a hardware bug). And after I noticed it, I just watched it for 5-10 minutes, but it never timed out and turned off. Folks that haven't noticed it *might* be complaining about dismal battery life.

    Hopefully, there's a firmware update coming from Moto...

    UPDATE: I have isolated it to a couple of widgets/apps that I installed to try and turn down the insanely bright backlight. Battery Booster, Brightness Toggle Widget, Brighterrific, and others do it. The only one that doesn't is Invisibright. And while the UI needs work, it functions perfectly and works in the browser as a BIG plus. That's the reason I kept bouncing from brightness contoller to brightness controller.
    Last edited by sweller; 02-05-2011 at 12:15 PM.

  7. #6

    Thumbs down

    I have a Droid 2 Global, not a Droid X, and my phone does exactly the same thing as the original poster's description.

    I don't have any of the apps that sweller listed above installed.

    The only apps I have that fiddle with brightness settings are Quick Settings and Spare Parts, but both of those are just shortcuts to the phone's settings, they don't manage anything on their own.

    It's especially annoying when sharing a phone charger with other people. If somebody unplugs my phone and doesn't know about this quirk (which they generally don't) the backlight stays on and drains the battery quickly.

  8. #7
    I found a solution (at least, it works for me with my Droid 2 Global).

    I had my battery profile set to Maximum Battery Saver. Go to Settings -> Battery Manager -> Battery Mode, and change the mode to anything but "Maximum Battery Saver". That stopped the problem for me.

    --

    Ironically, the problem only seems to happen with the Maximum Battery Saver profile. The problem doesn't appear to happen during off peak times in a custom profile, but I only did a quick test.

    Originally, when I switched from a Droid to a Droid 2, I used MyBackup to backup all my phone settings. I then restored them on the Droid 2. I thought that perhaps using settings restored from older hardware was causing the problem. So, I then backed up everything on my phone except the settings, did a factory reset, and restored the phone. The problem no longer happened.

    But, then I went through all the phone settings to manually set them to how I wanted them to be. After doing this I noticed the problem came back.

    Eventually I narrowed it down to the battery saver setting. I can very consistently make this problem happen with Maximum Battery Saver, and make it stop happening by selecting another profile.

    --

    Do An Experiment:

    Maybe other people could test. Try the following experiment:

    1. Settings -> Battery Manager -> Battery Mode -> Maximum Battery Saver
    2. Plug the phone charger in.
    3. Turn off display with power button or just let it turn off on its own.
    4. Unplug the phone charger.
    5. Does the backlight come on and stay on (the screen stays blank, but the backlight turns on; sometimes you have to look closely or be in a dark room)?

    Then:

    1. Settings -> Battery Manager -> Battery Mode -> any other profile
    2. Plug the phone charger in.
    3. Turn off display with power button or just let it turn off on its own.
    4. Unplug the phone charger.
    5. The display should not turn on.

    Post your results here.

    I have started the same discussion on droidforums.net here.

    J

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