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



Hey Brice,

On 11/27/07, Brice Goglin <Brice.Goglin@ens-lyon.org> wrote:
> 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?
>

After rebooting a few times, I have noted that it doesn't matter that
thinkpad-acpi is loaded.
I tried the command again after confirming the problem was happening
on my current session, any of the arguments (legacy, combination,
kernel, native) solved the problem.

greetings




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