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Description of problem:

Enabling compiz on Radeon X600 causes, that a small portion of the desktop becomes improperly renderened (see attached screenshot). Application windows over this are diplayed correctly but leave a trail behind as they are moved.


Version-Release number of selected component (if applicable):


How reproducible:

Always 

Steps to Reproduce:
1. Enable compiz (via Desktop Effects)
  
Actual results:

Part of the screen is corrupted

Expected results:

Whole desktop is ok

Additional info:

Could reproduce only on Radeon X600

Created attachment 519616 [details]
Desktop corruption on X600 with compiz

Since RHEL 6.2 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.

don't think we'll fix this now.

I expect its due to the X600 have some coordinate limit and compiz not respecting it.