[PATCH] fix backlight brightness on intel LVDS panel after reopening lid

[Alex Riesen]

On Wed, Feb 16, 2011 at 21:05, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> On Wed, 16 Feb 2011 20:59:35 +0100
> Alex Riesen <raa.lkml at gmail.com> wrote:
>>
>> I don't think it is related. I don't have problems switching
>> the outputs (frankly, didn't try) and I do have problems
>> restoring backlight, very similar to what I had earlier in
>> 2.6.37.
>
> Right, but it affects the registration of the backlight and ACPI video
> interface as well, so can affect backlight restore on resume.  In my
> case, without the above patch my backlight wouldn't be restored on
> resume, so I'd have to manually echo a value
> into /sys/class/backlight/<foo> to get my display back.

Ok, I tried, but only to find out that my tree already has the
patch (it is in mainline since today). So it definitely
does not help.

Thanks anyway