HP Pavilion dv7 3140el laptop with nVidia GeForce GT 320M.
OpenSUSE 12.2 x86_64.
Starting with version 304.60, I am experiencing Brightness/Gamma problems.
KDE power management is unable to automatically adjust the brightness.
Nvidia-settings takes a long time to start (about one minute) because of the file $HOME/.nvidia-settings-rc; if I delete that file, nvidia-settings starts immediately, but as soon as the file is regenerated, the problem returns.
All OpenGL programs have the same problem (for example, GoogleEarth starts immediately, but the globe appears after one minute).
Typing, for example “nvidia-settings -a 0/Gamma[DFP-0]=0,746” from a terminal, I get:
ERROR: Error assigning 0,746000 to attribute 'Gamma' on linux-22kj.site:0.0 specified in assignment '0/Gamma[DFP-0]=0,746' (Bad handle)
Tested with 304.60, 304.64 and 310.19.
Last working driver: 304.51.