[Bug 54273] kms blackscreen ATI RV620 FirePro 2260, res: 2560*1600

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54273

--- Comment #42 from John-Michael Mulesa <thesaxophonist at gmail.com> ---
Adding/setting a modeline in xrandr for the native resolution at 80hz (instead
of 60hz) works around this problem in X. I noticed my dell monitor was
outputting at 56hz when it should have been at 75hz on a lower resolution.
There seems to be a 3/4 ratio between what the display sees and what xrandr
sees.

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