[Bug 28960] Screen tearing (some tiles rendered with offset) especially when scrolling etc. in DualHead mode on HD4350

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28960

--- Comment #5 from Grzegorz Wierzowiecki <grzegorz.wierzowiecki at pjwstk.edu.pl> 2010-07-08 11:50:35 PDT ---
I've made tests.

When there is DualHead without Pivot ("normal" = no rotation) it is all ok.

When there is DualHead with one or two Pivot screens (I've tested rotation
left) then it is messed up with AllowDFS=on, tearing.

With allowdfs no tearing but performance dramatically falls down :/.

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