HAL

  1. Bug #277589
  2. Comment #114

Comment 114 for bug 277589

Revision history for this message
Moebius (louiscyphre) wrote : Re: sony brighness on a geforce series older than 8 (nvclock works fine)

@ benste,
the workaround I posted on #112 works for me completely (decreasing and increasing without the 20 steps problem) on a fresh (Kubuntu) Karmic install (without installing or removing any package).
The "hald-addon-generic-backlight" addon manages both decreasing and increasing in a generic way preventing the right scripts to be executed. HAL reported this error:
[W] addon-generic-backlight.c:121: Could not write '68' to '/sys/devices/virtual/backlight/sony/brightness'
so I had to remove the addon from the fdi.

In your case, I suggest to keep debugging HAL to find what is going wrong.
You could:
sudo /etc/init.d/hal stop
sudo hald --verbose=yes --daemon=no 2>&1 | tee /tmp/hal.log
Then, please, try to adjust the brightness and attach hal.log.
(As described in https://wiki.ubuntu.com/DebuggingHal)