Ubuntu
linux package

  1. Bug #1138168
  2. Comment #8

Comment 8 for bug 1138168

Revision history for this message
pqwoerituytrueiwoq (pqwoerituytrueiwoq) wrote : Re: Backlight control regression

This test was done on 3.9.0-030900rc1-generic
if it matters any value from 0 (completely off) to 4882 (100%) works for this, increments of 2 have a effect
echo 100 | sudo tee /sys/class/backlight/intel_backlight/brightness
it is like god mode for the back light level

the lowest the fn+brightness keys allow is a level of 1000 in /sys/class/backlight/intel_backlight/brightness
neither /sys/class/backlight/intel_backlight/brightness nor /sys/class/backlight/acpi_backlight/brightness change when using the brightness keys
i think if the system could query the backlight without altering it, it would return to its working state like in 3.6.11
would be nice if the fn keys would synchronize with what the software sets the backlight to (never worked even on the old bios)
as long as software like xbacklight and the xfce4-brightness-plugin can function properly that is good enough for me