No BACKLIGHT for

[Kay Sievers]

On Wed, Apr 28, 2010 at 11:56, Martin Pitt <martin.pitt at ubuntu.com> wrote:
> So, would it be possible to move these ACPI bits into X itself, and
> fall back to them if the driver does not support backlight setting
> itself? Then we would have X, and only X, as the userspace API to
> control backlight.

Yeah, Intel is already doing it:
  http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/tree/src/drmmode_display.c?h=7e7db7ac530b5282b0841585959597b54fcc633b#n89

Other drivers just need to do the same, maybe by sharing some pieces
here, but that would only be an implementation detail inside of X.

Kay