Fix for major Droid X battery drain

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WPWoodJr

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Nov 3, 2010, 9:58:42 AM11/3/10
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I've been messing around with building an auto-brightness function
based on the new light sensor functionality in Tasker, and noticed
something about the Droid X which will cause your battery to drain
significantly faster. When the Droid X turns on, it randomly (about 1
out of 2 times) will increase the brightness by about 1.5 times. So
if your brightness is set at 40, it will set the brightness to the
equivalent of about 60. However, Android still reports the brightness
as 40 so you would never know except by carefully eyeballing the
brightness. Once this happens the brightness will stay at the
equivalent of about 60 until you change it to something other than
40. If your brightness is set high it can even go above the
equivalent of 255 which is a real battery burner.

I've developed a profile to address this issue:

Profile Display Unlocked
Context
Display Unlocked
Task Anonymous
Variable Set %BRTMP to %BRIGHT-1
Display Brightness Level %BRTMP
Variable Set %BRTMP to %BRTMP+1
Display Brightness Level %BRTMP

When you turn on your Droid X and this profile runs, you will
frequently see the display dim back to your selected brightness level
after turning the Droid X on.

I'm interested to hear if others have this issue or maybe its just my
Droid X? Do other non-Droid X devices have this issue too?

WPWoodJr

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Nov 3, 2010, 10:20:18 AM11/3/10
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Slight correction to above profile for when you set brightness at 20
or below - add "Disable Safeguard" option to the first Display
Brightness command:

Profile Display Unlocked
Context
Display Unlocked
Task Anonymous
Variable Set %BRTMP to %BRIGHT-1
Display Brightness Level %BRTMP Disable Safeguard
Variable Set %BRTMP to %BRTMP+1
Display Brightness Level %BRTMP

Walter Francis

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Nov 3, 2010, 12:25:55 PM11/3/10
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On Nov 3, 9:58 am, WPWoodJr <wpwoo...@gmail.com> wrote:
> I've been messing around with building an auto-brightness function
> based on the new light sensor functionality in Tasker, and noticed
> something about the Droid X which will cause your battery to drain
> significantly faster.  When the Droid X turns on, it randomly (about 1
> out of 2 times) will increase the brightness by about 1.5 times.  So
> if your brightness is set at 40, it will set the brightness to the
> equivalent of about 60.  However, Android still reports the brightness
> as 40 so you would never know except by carefully eyeballing the
> brightness.  Once this happens the brightness will stay at the
> equivalent of about 60 until you change it to something other than
> 40.  If your brightness is set high it can even go above the
> equivalent of 255 which is a real battery burner.

Surely you're not suggesting that the backlight can be turned up
beyond its maximum and will "use more battery" than the backlight
simply being on its highest setting when manually going into Settings?

WPWoodJr

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Nov 3, 2010, 12:44:37 PM11/3/10
to Tasker
Yes

WPWoodJr

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Nov 3, 2010, 3:55:36 PM11/3/10
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>Surely you're not suggesting that the backlight can be turned up
>beyond its maximum and will "use more battery" than the backlight
>simply being on its highest setting when manually going into Settings?

You can demonstrate this easily if you have a Droid X. It may work on
other devices too for all I know. First implement the profile above.
Add a "Wait 1 Seconds" as the first action in the task. Then turn the
brightness up all the way. It will be quite obvious, when you turn
the display off/on a few times, that the screen is sometimes dimming
back to 255.

- Bill

On Nov 3, 12:25 pm, Walter Francis <khayt...@gmail.com> wrote:

WPWoodJr

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Nov 4, 2010, 10:54:36 AM11/4/10
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Can anyone with a Droid X confirm this behavior? I happily thought I
had my X set on a low brightness setting to save battery only to
discover it was 50% higher than I thought most of the time due to this
DX bug.
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