[Intel-gfx] BACKLIGHT_CONTROL and xrandr

[ykzhao]

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/*?
    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,