[Bug 27805] New: Corruption with dual screens on RV380

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27805

           Summary: Corruption with dual screens on RV380
           Product: xorg
           Version: 7.5
          Platform: x86-64 (AMD64)
        OS/Version: FreeBSD
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: peterjeremy at acm.org
         QAContact: xorg-team at lists.x.org


Created an attachment (id=35243)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35243)
Picture of corrupt screen

I am trying to upgrade an existing configuration that uses FreeBSD-7.2/amd64
and Xorg 7.4 (X server 1.6.1 + radeon 6.12.2) with an ATI RV380 (Radeon X600)
and dual screens to FreeBSD 8.0 and Xorg 7.5 (X server 1.7.5 + radeon 6.12.4). 
Whilst it appears to work satisfactorily with a single screen and using only
the first screen in my dual screen configuration, attempting to move a window
onto the second screen causes corruption on both screens and is very slow to
render on the second screen.

It looks like the right-hand screen is mirrored across both screens with about
1/3 screen horizontal offset.

I have tried using radeon 6.12.6 with no difference.

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