Bug#448467: xserver-xorg-video-intel: Thinkpad brightness keys don't work
forcemerge 443111 448467
thank you
Marcus Better wrote:
> The brightness control keys on my Thinkpad R60 stopped working in X
> some time ago. I have probably upgraded both kernel and X.org since
> then, and don't know exactly when it broke.
>
> Pressing the keys in an X session now only causes a short flicker, but
> does not affect the brightness. However the KDE on-screen display
> seems to think everything is fine since I can control the level it
> reports.
>
It might not be a good idea to use these keys since they modify the
hardware state in the back of the X driver. Using xbacklight is probably
a better idea in the end. But xbacklight has some other bugs on some
Intel boards unfortunately (see below).
> "xbacklight -set" changes the brightness in a totally random way. For
> example p=98 is barely visible, and most other settings give a
> constant medium-bright level.
>
We have a couple bugs about this. For instance #438969 and #439744. You
should try the latest upstream git of the Intel driver without and with
the patch from https://bugs.freedesktop.org/show_bug.cgi?id=11527 and
let us know whether it helps.
Brice
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