Re: no brightness with acpi video since 3.3 [was Re: Issues with the sony-platform module]

[Mattia Dongili <malattia@linux.it>]

Hi Karol

On Sat, Jun 16, 2012 at 08:07:53PM +0200, Karol Babioch wrote:
> Hi,
> 
> Am 16.06.2012 15:07, schrieb Mattia Dongili:
...
> > I'm trying to understand is if the patch series I sent works for
> > you on the last working version of kernel (i.e. 3.1 apparently).
> No, it doesn't work neither on 3.0 nor on 3.1. Interestingly the
> original patch that definitely did work on 3.0 and 3.1. I'm not quite
> sure what is the reason for this. I've basically compiled every kernel
> version from 3.0 to 3.3 :(.
> 
> > it is actually. What did you have in the sony-laptop sysfs directories
> > when booting with acpi_backlight=vendor?
> Unfortunately I don't know and can't reproduce a working solution here
> :(. Any clue why this could be?

I'm a bit lost at this point. Are you saying that you cannot get a
working backlight control with the old set-up you had?

If so what else did you change in your set up?
Also, any chance you could try to inspect/poke the acpi_video0 or
sony-laptop backlight directories without loading the nouveau driver?

thanks
-- 
mattia
:wq!