Ubuntu
nvidia-graphics-drivers-319 package

  1. Bug #1241745
  2. Comment #9

Comment 9 for bug 1241745

Revision history for this message
Crossle Song (xming-song) wrote : Re: [regression] Changing the screen brightness does not work anymore in 319.xx

Same issue, Macbook pro , maybe changed dir /sys/class/backlight/apple_backlight/
xbacklight can't work. I used xmonad on ubuntu 13.10. but 13.04 work well.