I just installed ubuntu on my computer after that I instaled the recommended driver for Nvidia GeForce FX 5600XT and display resolution is 640x320 how can I change it to a higher resolution , I really would appreciate if somebody could help me ,thanks
I followed these instructions to add 1680x1050 to my settings. It was pretty simple to follow:
Open the Terminal with
Next you'll add your monitor's resolution. For this example it's 1680x1050 so you would type this next in the terminal:
You will use the output of the the step above for the next step. Now past this (change to reflect your actual settings:
be sure to replace the numbers with your own. This is where I had to change it a little from the tutorial I'll link to which goes into more detail. I had to change VGA-0 to VGA1 for it to work for me.
Now you tell the server to display the new size:
To have the code appear in the Monitor settings panel you'll have to edit the gdm defaults by typing:
Find these lines in the file:
You'll add the three xrandr commands you've just entered which I've numbered in bold text above after those lines and save the file.
It worked for me. Here is the link to the much more detailed and original post: