Comment 220 for bug 1098216

(In reply to comment #93)
> (In reply to comment #92)
> > (In reply to comment #90)
> > > I've tried to apply the patchset to git master and it doesn't seem to
> > > completely fine on my ThinkPad x230.
> > >
> > > Brightness keys still don't work on console on pure X. If a power manager
> is
> >
> > Right, we have no way to make it work I'm afraid. The current mechanism is
> to
> > let intel_backlight handle the brightness change and ACPI video handle
> hotkey
> > event delivery. So when the event is sent out, if no user space tool reacts
> to
> > it, then nothing would happen.
>
> 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

> >
> > > running (xfce4-power-manager) it will work but it already worked on 3.9
> so I'm
> >
> > I don't understand how v3.9 could work? Are you already using some
> xorg.conf to
> > specify which backlight interface to use(i.e. intel_backlight in this
> case)?
>
> I'm not. I need to double check I'm not doing anything fancy. I tested using
> the Debian kernel so maybe there are some patches (although it seems
> unlikely).

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?