i just installed Ubuntu, and then changed my resolution using xrandr, now when i reboot i get a black screen.

whenever i run xrandr -d :0.0 -q

it shows a slew of resolutions and refresh rates. the current selected resolution is 1400x1050 at a refresh rate of 85. the monitor will do 1400x1050, but only at 60Hz. when i run xrandr on a similar laptop, it shows a resolution of 1400x1050 at 60Hz. when i check xorg.conf, the horizsync and vertrefresh rates for the computers are both the same.

what does xrandr look to for available resolutions/refresh rates? it must look to something other than just xorg.conf because i have identical xorg.conf files and yet when i run xrandr -q on similar machines and look at available resolutions/refresh rates they are completely different. any ideas/suggestions?

surprise!

apparently this issue had absolutely nothing to do with xrandr. i hate it when i spend all of my time trying to fix something that's not causing the problem.

i had to edit /boot/grub/menu.lst

and add "vga=791" at the end of my kernel parameters. so now it looks like: