1

I have ubuntu 12.04.2 LTS AND i recently updated my system. There was a kernel update also. I tried several solutions on net. Like This , this and none of them worked for me.

I put that acpi_backlight= vendor and i was not able to change brightness at all. I removed that from grub file and i was able to change brightness from brightness and lock, function keys are still not working for brightness while volume function and other function keys are working properly.

Community
  • 1
Kanhiya
  • 439
  • 2
  • 6
  • 21

2 Answers2

0

Just to confirm, you tested both acpi_backlight=vendor and acpi_osi=linux (together and independently) and ran sudo update-grub after each attempt? Also, you might want to mention the kernel version (post the output of uname -a) as well as hardware information.

CodeSurgeon
  • 101
  • 4
0

Try this app .. https://apps.ubuntu.com/cat/applications/brightness-controller/

I was also searching stuff related to driver , but at last I found this app . I am having ubuntu - 12.04 on Sony - vaio, working fine for me.

user2761565
  • 1