I am trying to set refresh rate to 85 Hz or 75 Hz on a 1024x768 and 1280x1024 screen resolution.
On Windows this works, so my card and monitor have 100% support.
I tried to use
xrandr but it fails with the message:
configure crtc 0 failed
- monitor: HP 92 (CRT, manual)
- graphics card: AMD Radeon HD 6450
- graphics driver: FGLRX
Do you have any suggestions?