[Bug 45825] New: Displayport output unusable on Llano

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Feb 9 03:18:20 PST 2012


             Bug #: 45825
           Summary: Displayport output unusable on Llano
    Classification: Unclassified
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: tomi.pievilainen+freedesktop at iki.fi
         QAContact: xorg-team at lists.x.org

Created attachment 56802
  --> https://bugs.freedesktop.org/attachment.cgi?id=56802
The image on displayport connected monitor. The dark section in the middle is a
mirror of terminal covering another desktop in another monitor

Picture on display port monitor on a dual screen setup is very corrupted, it
mirrors partly the other screen Cursor is rendered just fine on top of the

I've had some problems before with this setup, but nothing this severe.

This seems to be related to a previously unseen error in dmesg:
[  151.477541] [drm:radeon_dp_get_link_status] *ERROR* displayport link status
[  151.477545] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery failed

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