I'm new in this forum and even a beginner with ubuntu.
I've already tried to set the resolution of my monitor to 1440x900 but I can't get on because xrandr shows me error messages like:
xrandr: Failed to get size of gamma for output default xrandr: Configure crtc 0 failed
Here there is the output of xrandr
Screen 0: minimum 640 x 480, current 1280 x 1024, maximum 1440 x 1024 default connected 1280x1024+0+0 0mm x 0mm 1280x1024 0.0* 1024x768 0.0 800x600 0.0 640x480 0.0
As I said before, I would like to set resolution to 1440x900. Can anyone please help me to resolve this situation?