Brightness keyboard buttons do not work on Asus 1225c

Question

I have problem with my new netbook. I installed Ubuntu 12.10 and I can't use my brightness key's (Fn+F5/F6). When i use them OSD appears and indicates the increase or decrease of brightness but nothing really happens to screen. I used this command from terminal(and it worked):

sudo setpci -s 00:02.0 F4.B=xx

But I want use my Fn keys. Is it possible to do this?

Thanks for help!

Possible duplicate: http://askubuntu.com/questions/221826/ – user98085 Dec 19 '12 at 12:32 — user98085, Dec 19 '12 at 12:32

score 8 · Accepted Answer · answered Dec 19 '12 at 13:19

8

Copy-Paste from here the commands below (to your terminal) , with order and one at time

First

sudo sed 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="/' -i /etc/default/grub

Second

sudo update-grub

Reboot your system and see if Fn (for brightness) works.

answered Dec 19 '12 at 13:19

NickTux

17,539

Also fixed my problem for ASUS S551LB. – shantanu Apr 18 '14 at 07:19
Fixes the brightness buttons for ASUS G56jr too! Thank you! – Kokozaurus Aug 02 '14 at 09:26
if this doesn't work for Asus g56jr, check this: http://askubuntu.com/a/505790/265366 – Kokozaurus May 29 '16 at 19:40

Brightness keyboard buttons do not work on Asus 1225c

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