Review Request 114807: Don't dim display if backlight brightness is already 0

[Commit Hook]

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This review has been submitted with commit 6326ee72a1fd895b68d71e7da03b5e817b7be114 by Alexander Mezin to branch KDE/4.11.

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On Jan. 2, 2014, 2:50 a.m., Alexander Mezin wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/114807/
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> (Updated Jan. 2, 2014, 2:50 a.m.)
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> Review request for kde-workspace and Dario Freddi.
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> Repository: kde-workspace
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> Description
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> Some drivers report backlight brightness == 0 when display is switched off with DPMS (for example, Intel driver on my laptop).
> If screen was switched off before dimming was started, it remembers 0 as previous backlight level. When I move mouse/press key, display doesn't switch on, because powerdevil sets brightness to 0.
> This patch fixes the problem for me. It just doesn't change backlight brightness if it's already 0.
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> Diffs
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>   powerdevil/daemon/actions/bundled/dimdisplay.h f917d71 
>   powerdevil/daemon/actions/bundled/dimdisplay.cpp 39e0636 
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> Diff: https://git.reviewboard.kde.org/r/114807/diff/
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> Testing
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> It works on my laptop.
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> Thanks,
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> Alexander Mezin
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