[Intel-gfx] BACKLIGHT_CONTROL and xrandr

[Sergio Monteiro Basto]

On Wed, 2010-04-07 at 08:36 +0800, ykzhao wrote: 
> On Tue, 2010-04-06 at 23:43 +0800, Sergio Monteiro Basto wrote:
> > Hi , I have fedora 12 updated , with kernel 2.6.32.11-99.fc12.i686.PAE ,
> > with have new bits of drm by Arlied.  
> > 
> > Back to drv-intel 2.5.1 I wrote 
> > "xrandr --output LVDS --set BACKLIGHT_CONTROL legacy, look like that
> > fixes the issue. The difference about drv-intel 2.2.1 and drv-intel
> > 2.5.1 , in this case, is only, the default BACKLIGHT_CONTROL value."
> > 
> > but now I can't even see BACKLIGHT_CONTROL properties . 
> > 
> > xrandr  --properties don't show any info for BACKLIGHT_CONTROL 
> > am I missing something ? 
> 
> Can you confirm whether the brightness interface can be found
> under /sys/class/backlight/*?
no 

ls -l /sys/class/backlight/
total 0

This is an old (always the same) laptop with 4 years old 

Thanks, 

> If it exists, please confirm whether the brightness can be adjusted
> by using the following command?
>     echo XXX > /sys/class/backlight/*/brightness
> 
> thanks
>     Yakui
> > 
> > 
> > Thanks,
> 

-- 
Sérgio M. B.
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