Bug#452894: Brightness is reduced when switching to a VT, using 3d games or switching resolution

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Diego Escalante Urrelo wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.2.0-1
> Severity: normal
>
> --- Please enter the report below this line. ---
>
> If I switch VTs, manually or automatically due GDM start or whatever,
> the screen brightness is reduced to 30%. 
> You can reproduce this by openning zsnes, chromium or switching
> resolution/refresh on the screen resolution GNOME capplet. Also
> switching to contrl+alt+f1 or any other triggers the problem.
>   

Can you try running
   xrandr --output LVDS --set BACKLIGHT_CONTROL legacy
and see it changes anything?

What if you try "combination", "kernel" or "native" instead?

Brice