Ubuntu
alsa-driver package

  1. Bug #568611
  2. Comment #78

Comment 78 for bug 568611

Revision history for this message
Hendy Irawan (ceefour) wrote : Re: Screen brightness control fails on Dell Studio 1558, Lenovo Ideapad Z360

To always add acpi_backlight=vendor to your kernel, edit the /etc/default/grub file by running:

gksu gedit /etc/default/grub

and edit the following line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

into:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Save, and run:

sudo update-grub