How to control Brightness on Acer Laptop

Question

I've installed Ubuntu 12.04 in an Acer Timeline X 5830TG and brightness controls were not working (Fn + Key), even the Ubuntu's one.

score 14 · Accepted Answer · answered Aug 29 '12 at 14:14

14

Solution:

Edit GRUB:

sudo nano /etc/default/grub

change GRUB_CMDLINE_LINUX_DEFAULT to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor"

then:

sudo update-grub

Reboot.

Controls are working.

answered Aug 29 '12 at 14:14

JorgeeFG

score 0 · Answer 2 · answered May 04 '13 at 06:56

0

Most simple and fast way to do this.... Use this command

xrandr --output LVDS1 --brightness 0.5

Set the value in between 0 to 1 like in this case it is 0.5 This works for me Try this !!!

answered May 04 '13 at 06:56

Sarthak killer

2 Answers2