Comment 34 for bug 392948

Pioterek, thanks a lot for your time. Unfortunately, the file /boot/grub/menu.lst doesn't seem to exist on my Ubuntu 10.04 (Lucid Lynx).

However, I did manage to enable brightness controll by editing /etc/default/grub as described in:
https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/392948/comments/29
and
https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/392948/comments/30

That solution destroys startup/shutdown Ubuntu welcome screen though, so I'd love to try your acpi_osi="Linux" solution, if only I could find the menu.lst file.

Also, in your previous post you emphasized that "Linux" should be inside double-quotes, but now you omitted them. How come?

Sorry for taking your time.