ATI card - cannot set refresh rate higher than 60 Hz

Posted by KubaV on Ask Ubuntu See other posts from Ask Ubuntu or by KubaV
Published on 2012-10-08T15:31:48Z Indexed on 2012/10/08 15:52 UTC
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I am trying to set refresh rate to 85 Hz or 75 Hz at 1024x768 and 1280x1024.
On Windows this works, so my card and monitor have 100% support.
xrandr does not work - it gives me configure crtc 1 failed
I use FGLRX.
Please help
Monitor:CRT - HP 92 (manual http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/lpv09818/lpv09818.pdf)
G. card: AMD Radeon HD 6450
Sorry for bad english, I am Czech.

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