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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?

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