Screen resolution can sometimes be set very high, sometimes not
I am using xubuntu 8.04. My video card is nvidia geforce fx5600. My default screen resolution is 960x600, nothing higher in the list of monitor settings . I want 1024x768. When I use the proprietary driver from nvidia, I get a default resolution of 400x300, nothing higher in the list, so I disabled it. But yesterday I got a long list of resolutions and was able to set the resolution to 1280x800 and higher choices in the list. Today I got the old list, with highest resolution of 960x600.
How is this possible. (I didn't make any changes in between).