https://bugzilla.kernel.org/show_bug.cgi?id=42833





--- Comment #19 from Lee, Chun-Yi <j...@novell.com>  2012-07-11 14:51:16 ---
(In reply to comment #18)
> (In reply to comment #17)
> > The 050eff39af6 patch already merged in v3.5-rc1. 
> > 
> > Please give the following information:
> >  + dmesg:
> >       dmesg > dmesg.log
> > 
> >  + the result of 'ls /sys/class/backlight', please do NOT put
> > "acpi_backlight=vendor"
> > 
> > 
> > Thanks
> 
> Here it is: http://pastebin.com/bSm14tRP

Looks the dmesg from acer-wmi is right:

[   15.958563] acer_wmi: Brightness must be controlled by generic video driver


What's the result of "ls /sys/class/backlight" WITHOUT "acpi_backlight=vendor"
?

Does "echo 5 > /sys/class/backlight/intel_backlight/brightness" still work to
you on your v3.5-rc kernel?

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