cannot adjust brightness in 12.04 log in scren

Asked by kiran on 2013-05-18

when i edited the following i can control the brightness after login in to the but i cannot control brightness of log in screen

gksudo gedit /etc/default/grub

Change the line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to:
GRUB_CMDLINE_LINUX="GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"

Save the new file, close gedit and run:
sudo update-grub

Reboot to test

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu acpi Edit question
Assignee:
No assignee Edit question
Last query:
2013-05-18
Last reply:
2013-05-18

i suggest you report a bug

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