[ubuntu] screen resolution issue

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http://ubuntuforums.org – Hi folks. The problem. The screen is a 22" widescreen, the desktop is set at 640x480 and I can't change it. I'm using the recommended driver (via nvidia-settings, IIRC). Given that windoze runs the screen adequately at 1680x1050 and 32 bit colour I sorta suspect that ubuntu can run it superbly at the same settings. So, can any point me in the right direction to make it do just that? The machine... 11.10 32 bit desktop environment running on a Q6600 2GB RAM, 800GB of disk on SATA2, DVD burner on SATA2, nVidia 8800GTS (320MB RAM) and a Chimei CMV221D monitor. Thankies. Simon. (Hardware)