Hmm, unless I'm mistaken it looks like such a patch was considered for inclusion into KDE 4.8.1 or 4.8.2, about two weeks ago:
https://bugs.kde.org/show_bug.cgi?id=288180 At the moment I'm running KDE 4.8.0. Best regards, Joël On Wed, Feb 15, 2012 at 12:12 PM, Joël Bourquard <[email protected]>wrote: > Hi Michael, > > Thank you! Indeed, setting CONFIG_BACKLIGHT_CLASS_DEVICE=y (instead of > "m") and recompiling my kernel did the trick! > > Now I can do: > > cat > /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight/max_brightness > 4882 > > Now, if only KDE could use that, instead of the 0-8 levels it offers! If > anyone knows how to make KDE aware of intel_backlight, let us know :-) > > Best regards, > > Joël > > > > On Wed, Feb 15, 2012 at 12:53 AM, Michael Zugelder > <[email protected]>wrote: > >> On Mi, 2012-02-15 at 00:21 +0100, Joël Bourquard wrote: >> > My kernel is configured as follows: >> > CONFIG_BACKLIGHT_CLASS_DEVICE=m >> >> Hi Joël, >> >> my config sets CONFIG_BACKLIGHT_CLASS_DEVICE=y, which probably explains >> this behaviour. The function setting up the intel_backlight is wrapped >> in an #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE. If my quick search turns out >> to be correct, CONFIG_..._MODULE is set when compiling it as a module, >> not the CONFIG_... that the #ifdef is checking. So it seems you just >> have to recompile your kernel with this change. >> >> The Ubuntu kernel is compiled with CONFIG_BACKLIGHT_CLASS_DEVICE=y, but >> I never used intel_backlight until it got picked up by KDE. >> >> >> Michael >> >> >
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