https://bugzilla.kernel.org/show_bug.cgi?id=15182
--- Comment #31 from Corentin CHARY <corenti...@iksaif.net> 2010-03-25
20:39:02 ---
(In reply to comment #29)
> Rolf,
> does the problem still exist without any acpi_osi boot options?
> can you change the backlight via /sys/class/backlight/acpi_video0/brightness
> in
> this case?
>
> Corentin,
>
> Method (_BCM, 1, NotSerialized)
> {
> Store (Arg0, Local0)
> ^^^^ATKD.PBLS (Local0)
> }
> it seems that the ACPI video driver invokes PBLS to change the backlight,
> doesn't this work when ATKD._STA returns 0?
Honestly I don't know, but I think it should.
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