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

[Mattia Dongili <malattia@linux.it>]

On Fri, Jun 15, 2012 at 05:17:22PM +0200, Karol Babioch wrote:
> Hi again,
> 
> Am 15.06.2012 13:36, schrieb Mattia Dongili:
> > could you please test it?
> Well, I've applied the patch (as well as the six others you submitted to
> Matthew since the inclusion into 3.5-rc1 found here [1]), but it still
> doesn't work. It's just the same as before. When booting without any
> special parameters I'll get the brightness pop up when pressing the
> appropriate fn keys.
> 
> With "acpi_backlight=vendor" I don't get this pop-up at all.

ok, let's forget about gnome popups for a moment, can you try using the
sysfs files directly?

i.e.:
$ grep .  /sys/class/backlight/sony/*
/sys/class/backlight/sony/actual_brightness:206
/sys/class/backlight/sony/bl_power:0
/sys/class/backlight/sony/brightness:206
/sys/class/backlight/sony/max_brightness:206
grep: /sys/class/backlight/sony/power: Is a directory
grep: /sys/class/backlight/sony/subsystem: Is a directory
/sys/class/backlight/sony/type:platform

$ echo 150 | sudo tee /sys/class/backlight/sony/brightness
150

Could you then include (in your mail please) the dmesg output after
this test?

Thanks!
-- 
mattia
:wq!