Comment 224 for bug 1098216

(In reply to comment #95)
> (In reply to comment #94)
> > (In reply to comment #93)
> > > Can't the acpi part handling the hotkey even pass the message to
> > > intel_backlight?
> >
> > I'll not do this decision making thing, and you are welcome to give your
> ideas
> > in the mailing list on this topic:
> > https://lkml.org/lkml/2013/6/9/161
>
> Ok, will try to write to the thread.
>
> > If no changes are made, the ACPI video backlight interface will be picked
> up by
> > user space and since it is broken, I don't see why 3.9 would work...Did you
> add
> > any kernel command line like the !Windows 2012?
>
> Ok, I've just tried on vanilla 3.9.7 (will attach dmesg and config just in
> case). Using /sys/class/backlight/acpi_video0/brightness *does* work.
> /s/c/b/intel_backlight/brightness works too.
>
> Not to sure what xfpm uses, I can check if needed.
1. Need 3.10 kernel
2. /sys/class/backlight/acpi_video0/ shouldn't exist after patching