I have installed Ubuntu 11.04 along with Windows XP. Grub is installed properly. When the grub menu loads I get a moving message window saying my monitor is not in the optimum resolution of 1280x1024 and 60Hz refresh rate. I can boot windows because I know it is the last item on the grub list. So, I just press the down key for a long time. If I don't press anything Ubuntu loads. I changed /etc/default/grub and added the line
and did an update-grub. This did not work. Please help.