I am new to Ubuntu and I was trying to get my HDMI enabled TV to work with my Ubuntu 12.04 computer and I installed a Nvidia driver using the "additional drivers" program. After that didn't work, I started playing around with the dual booted windows 7 on my computer. Now, I've never used that windows since I installed it so I was stripped down to bare minimum so I tried to adjust the resolution(as it was on lowest resolution) and tried to connect the HDMI, which didn't work. After that I came back to my Ubuntu installation only to find out that it is now stuck on 640x480 resolution. I tried to remove the driver that I installed again using the "additional drivers" program but that didn't help at all. The error that showed up was - Could not apply the stored configuration for monitors none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Trying modes for CRTC 64 CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Any help would be appreciated as this is very annoying. Thanks