Bug 45825 - Displayport output unusable on Llano
Summary: Displayport output unusable on Llano
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Default DRI bug account
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-02-09 03:18 UTC by Tomi Pieviläinen
Modified: 2012-02-19 01:49 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
The image on displayport connected monitor. The dark section in the middle is a mirror of terminal covering another desktop in another monitor (699.71 KB, image/jpeg)
2012-02-09 03:18 UTC, Tomi Pieviläinen 		no flags Details
Picture of terminal and cursor on the screen, with weird mirrored Firefox on top of it. (741.98 KB, image/jpeg)
2012-02-09 03:21 UTC, Tomi Pieviläinen 		no flags Details
Xorg log (44.34 KB, text/plain)
2012-02-09 03:21 UTC, Tomi Pieviläinen 		no flags Details
dmesg (71.34 KB, patch)
2012-02-09 06:55 UTC, Tomi Pieviläinen 		no flags Details | Splinter Review
View All

Description Tomi Pieviläinen 2012-02-09 03:18:20 UTC 
Created attachment 56802 [details]
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
Comment 1 Tomi Pieviläinen 2012-02-09 03:21:00 UTC 
Created attachment 56803 [details]
Picture of terminal and cursor on the screen, with weird mirrored Firefox on top of it.
Comment 2 Tomi Pieviläinen 2012-02-09 03:21:30 UTC 
Created attachment 56804 [details]
Xorg log
Comment 3 Alex Deucher 2012-02-09 05:19:55 UTC 
Please attach your dmesg output.  What kernel are you using?
Comment 4 Tomi Pieviläinen 2012-02-09 06:55:05 UTC 
Created attachment 56820 [details] [review]
dmesg
Comment 5 Tomi Pieviläinen 2012-02-09 06:56:30 UTC 
I have stock ubuntu oneiric kernel, linux-image-3.2.0-030200rc2-generic
Comment 6 Alex Deucher 2012-02-10 16:53:26 UTC 
Can you try a 3.3rc3 kernel?  What kind of monitor is attached to the Displayport connector?
Comment 7 Tomi Pieviläinen 2012-02-11 04:20:42 UTC 
Sure, I'll see if I can find it on the repos. If not, might take a bit longer.

The displayport is connected to an active dp-to-dldvi adapter, which is connected to Samsung SyncMaster 305tplus (monitor with only dldvi input, and accepts only 2560x1600 and 1280x800 modes). The dvi is connected to HP LP2475w, which is pivoted.

The APU is A3500 connected to Asus F1A75V_PRO motherboard.
Comment 8 Tomi Pieviläinen 2012-02-11 04:28:58 UTC 
Running now on 3.3rc3, same results.
Comment 9 Tomi Pieviläinen 2012-02-19 01:49:35 UTC 
After the latest update, it works now fine.

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