How can I Fix control of brightness in Ubuntu 12.04 ?
I've just found solution and brightness started to work. You can now adjust brightness with fn keys. Follow the following steps:
In the terminal:
gksudo gedit /etc/default/grub
You will find this line in the new opened window:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Change it to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Save and close the window and type this in the terminal:
sudo update-grub
Then reboot.
Enjoy!
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