Problem: I can't adjust the brightness of my iMac and it's killing me. (My eyes! The goggles do nothing!).
Has anyone gotten this to work?
3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
I've tried this fix: https://wiki.ubuntu.com/Kernel/AppleGmuxBacklight
But it doesn't seem to work since the kernel module doesn't seem to be loading. (
dmesg | grep gmux returns nothing)
I've also tried doing this:
xrandr --output LVDS --brightness 0.3
and it dims the screen, but the mouse cursor still blazes away at full brightness.
Any thoughts? Thanks!
ls /sys/class/backlight/ returns
-The brightness slider in "System Settings" has no effect.
-The "brightness" function keys on my apple bluetooth keyboard don't have any effect.