Ubuntu 12.04 is changing resolution / refresh rate after login

view story

http://askubuntu.com – The X11 log below shows a problem: First, the resolution is set to "1920x1080@50p" which is great. The login dialog seems to be fine at 1920x1080@50p. After I login, the resolution changes to "1920x1080_60". The mode "1920x1080_60" is NOT even defined in my xorg.conf. I only have ModeLine and Mode defined for "1920x1080@50p". I wonder who is setting the other mode ("1920x1080_60")? I already disabled the nvidia-settings startup thing ... but this didn't change anything. xorg.conf: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 295.40 (buildmei (HowTos)