https://bugs.freedesktop.org/show_bug.cgi?id=45825
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: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
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
screen.
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
failed
[ 151.477545] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery failed
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