As suggested, I added the following line to the Section "Screen" of my xorg.conf: Option "DynamicTwinView" "FALSE"
Then I restarted X. The problem was solved! The indicated screen frequency in System - Preferences - Screen resolution, was automatically changed to the ideal 60 Hz. Thanks, Pjotr. -- [nvidia-glx] screen frequency/refresh not higher than 50 Hz https://bugs.launchpad.net/bugs/95254 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs