Review Request 109792: Update 'dim display' algorithm.

[Danny Baumann]

> On March 31, 2013, 4:14 p.m., Àlex Fiestas wrote:
> > To be honest I don't like adding yet another configuration option by default, a configuration option that apparently is needed only in some systems.
> > 
> > There is no other alternative than this?

Well, I don't see any. I tried to approach this at the kernel level first, but the kernel people rejected the idea. But I don't see it as a big problem either: E.g. Windows (which isn't an example of overconfigurability) has a dimmed brightness setting as well. While it's required for my laptop, I think it can be useful for other people as well. When I hit the problem, at first I couldn't believe this isn't configurable either ;)

BTW, one thing I'm not yet certain about is whether the option should be 'dim to' or 'dim by'. Currently it's the former, but the latter might it make more obvious that the value is relative to the non-dimmed brightness.


- Danny


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On March 31, 2013, 4:07 p.m., Danny Baumann wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/109792/
> -----------------------------------------------------------
> 
> (Updated March 31, 2013, 4:07 p.m.)
> 
> 
> Review request for kde-workspace and Solid.
> 
> 
> Description
> -------
> 
> This change does two things:
> - No longer dim display before the dim time set by the user elapses.
>   This fixes bug #304696
> - No longer assume that 0% display brightness produces a visible result.
>   This doesn't work with the intel-backlight backlight interface (as it
>   turns off the backlight at 0% brightness). According to the kernel
>   developers (see [1] and [2]), this isn't a safe assumption to make for
>   other backlight interfaces either. Instead of always dimming to 0%,
>   make the amount of dimming configurable.
> 
> [1]
> http://lists.freedesktop.org/archives/intel-gfx/2013-March/026152.html
> [2]
> http://lists.freedesktop.org/archives/intel-gfx/2013-March/026140.html
> 
> 
> This addresses bug 304696.
>     http://bugs.kde.org/show_bug.cgi?id=304696
> 
> 
> Diffs
> -----
> 
>   powerdevil/daemon/actions/bundled/dimdisplay.h 426640ca7a2a2d23044052710fdfb4b1f65617d1 
>   powerdevil/daemon/actions/bundled/dimdisplay.cpp 11554e3ba5d2f67d4d1de9d61c744c6c40a32d27 
>   powerdevil/daemon/actions/bundled/dimdisplayconfig.h 14b787937249a512cf958a31fd3bd71d6051540d 
>   powerdevil/daemon/actions/bundled/dimdisplayconfig.cpp bc116d6216c4624cbf14489d739d9d226fb70ff3 
> 
> Diff: http://git.reviewboard.kde.org/r/109792/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Danny Baumann
> 
>

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