Every time I boot Ubuntu 12.04 it goes to 2880x1800 (retina enabled) or 1440x800 (retina disabled). Yes I have edited /etc/X11/xorg.conf and the only Mode I have listed is the resolution I want (1680x1050) but it has no effect. I manually change the resolution using the system settings (it lists tons of resolutions so no problem there) and it switches to 1680x1050 no problem and looks great, but when I shut down and start up again it's back to 2880x1800 (my eyes aren't that good!). Thanks for any help.