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[jMax <jmax.red@xxxxxxxxx>]

Reading https://bugs.freedesktop.org/show_bug.cgi?id=21553, I found the
problem is related to "coherent mode" (What's that ?!?). Command line
below solve the problem.

xrandr --output DVI-0 --set coherent_mode 0

I can enjoy again my 1600x1200 screen !

Does anybody knows how to make coherent mode disabled as default ? I
can't found anything related to this reading man ati...

Hope this workaround may help other people...

-- 
[RV530] Screen "static noise" using high resolutions
https://bugs.launchpad.net/bugs/366651
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