[Bug 55574] New: RadeonHD 6570 locks up during boot and glitches with KMS until recovery is complete

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=55574

          Priority: medium
            Bug ID: 55574
          Assignee: xorg-driver-ati at lists.x.org
           Summary: RadeonHD 6570 locks up during boot and glitches with
                    KMS until recovery is complete
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: m.b.lankhorst at gmail.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/Radeon
           Product: xorg

Created attachment 68036
  --> https://bugs.freedesktop.org/attachment.cgi?id=68036&action=edit
screenshot of xorg background corruption, plymouth corruption is similar but
moving around

When booting linux with 3.2, 3.5.5 or 3.6 and drm-next (other versions
untested) the initial framebuffer shows small pieces of horizontal corruption
on plymouth and Xorg. This lasts until Xorg completes loading. If you get lucky
and the lockup recovery is succesful Xorg works normally afterwards, but the
background image is still corrupted until it is changed.

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