Ubuntu
alsa-driver package

  1. Bug #568611
  2. Comment #264

Comment 264 for bug 568611

Revision history for this message
AlexW (alex.wedensky) wrote : Re: [Bug 568611] Re: Screen brightness control fails on Dell Studio 1558

try the whole string:

acpi_osi=Linux acpi_backlight=vendor dell_laptop.backlight=0

this worked on my Dell Studio 1558 with 3.8 kernels

Alex

On 13-04-17 09:27 PM, Luciano Dato wrote:
> Oh I forgot ls /sys/class/backlight dell_backlight intel_backlight and
> uname -r 3.8.0-18-lowlatency as I've said before
>