Ubuntu
xserver-xorg-video-intel package

  1. Bug #397617
  2. Comment #160

Comment 160 for bug 397617

Revision history for this message
Andreas Fackler (andreasfackler) wrote :

I have the same problem on my acer Extensa 5230 notebook with intel driver 2.9 and kernel 2.6.31.

Without KMS, "xrandr --props" shows properties "BACKLIGHT" and "BACKLIGHT_CONTROL", while with KMS, there are the properties "BACKLIGHT" and "Backlight", but no "BACKLIGHT_CONTROL". Setting brightness via xrandr or /sys/class/backlight both work with KMS, only the keys have no effect.

The acer Extensa 5230 has no "brightness" menu point in its BIOS.