Ubuntu – Can’t adjust screen brightness on Macbook Pro 10,1 Ubuntu 13.10

13.10brightnessmacbook pronvidia

I recently installed Ubuntu on my retina Macbook Pro (following this great guide).

Everything works fine so far however the screen brightness / backlight cannot be adjusted neither by using the assigned key nor by any other means.
I know, I'm not the first to address this problem, but all the suggested solutions I found so far did not work for me. I unsuccessfully tried the following:

  • Including Option RegistryDwords" "EnableBrightnessControl=1 in the Devices Section of /etc/X11/xorg.conf
  • the application xbacklight
  • I also haven't found any file such as mbp_backlight or apple_backlight on my system which probably would be a starting point.

I'm using the Nvidia-driver. (BTW: With the nouveau-driver, the keys to adjust the brightness work. However, with the nouveau driver Ubuntu does not resume from suspend mode)

Any suggestions what I can do? Thanks!

Best Answer

I installed Ubuntu 13.10 on my 15" MacBook Pro 11,3 (Late 2013) with kernel 3.14.0-031400rc5-generic and the 331.49 Nvidia driver. My brightness control keys were not working either. Fix was to add this line to /etc/rc.local:

setpci -v -H1 -s 00:01.00 BRIDGE_CONTROL=0

Brightness control keys work now.

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