[Bug 44156] [GM45] failure to control backlight

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44156

--- Comment #47 from alan.zimm at gmail.com ---
Yes,

root at alanz-laptop:~# echo 649450 >
/sys/class/backlight/intel_backlight/brightness
root at alanz-laptop:~# echo 2649450 >
/sys/class/backlight/intel_backlight/brightness

behaves as expected. The second value comes from

root at alanz-laptop:~# cat
/sys/class/backlight/intel_backlight/max_brightness
2649450


Thanks
  Alan

On Tue, Jan 22, 2013 at 10:37 PM, <bugzilla-daemon at freedesktop.org> wrote:

>   *Comment # 46 <https://bugs.freedesktop.org/show_bug.cgi?id=44156#c46>on bug
> 44156 <https://bugs.freedesktop.org/show_bug.cgi?id=44156> from Daniel
> Vetter <daniel at ffwll.ch> *
>
> The setpci thing is the legacy hack (which on some Acer laptops seems to get
> horribly in the way). Backlight /should/ get controlled through
> /sys/class/backlight drivers. At least that's what X will use ...
>
> Do none of those drivers work? If that's the case, you need a platform specific
> (probably some acpi/wmi magic) backlight driver ...
>
>  ------------------------------
> You are receiving this mail because:
>
>    - You reported the bug.
>
>

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20130122/dfbc98ae/attachment.html>