My monitor's native resolution is 1366x768 and the highest resolution when i installed F20 was 1024x768. I also had a problem with artifacts showing up so I followed this guide in hopes it would help me solve both problems http://www.if-not-true-then-false.com/2013/fedora-19-nvidia-guide/ however it only solved the artifacts problem. The monitor I have is a Samsung SA300 19' which has only a VGA output and my GPU (GeForce GTX 650Ti Boost) has only DVI & HDMI inputs so I have a VGA to DVI adapter. When I followed that guide I actually installed the NVidia drivers and turned off the default driver so now i have this sort of control panel called NVidia X Server and when I set a custom resolution (ViewPortIn and Panning set to 1366x768 I can't change ViewPortOut which is set to 1024x768+0+0) I get a blurry image even if i press auto on the monitor to sort it out, also in the menu of the monitor - information tab it says 48.4kHz 60Hz NN 1024x768 and below that it says Optimal Mode 1366x768 60Hz. Help ?