Bug 52467

Summary: Radeon HD6450 KMS garbled screen on boot.
Product: DRI Reporter: sowadski
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
DMESG after booting with screen corruption
none
DMESG after restarting X a couple time to fix the issue
none
Xorg log after issue is gone
none
Picture of screen corruption
none
Cleanup and fix mc programing
none
corrupted screen on ubuntu 13.04 none

Description sowadski 2012-07-25 02:27:15 UTC
Just recently upgraded to a Radeon HD6450. Upon boot, as soon as fbcon takes over, the screen gets corrupted. (note X is not started on boot). SSHing into the box and starting and restarting X a couple time sometimes fixes the issue, sometimes locks of the machine.
Comment 1 sowadski 2012-07-25 02:33:03 UTC
Created attachment 64638 [details]
DMESG after booting with screen corruption
Comment 2 sowadski 2012-07-25 02:33:44 UTC
Created attachment 64639 [details]
DMESG after restarting X a couple time to fix the issue
Comment 3 sowadski 2012-07-25 02:34:18 UTC
Created attachment 64640 [details]
Xorg log after issue is gone
Comment 4 sowadski 2012-07-25 02:43:09 UTC
Created attachment 64641 [details]
Picture of screen corruption
Comment 5 Alexandre Demers 2012-07-25 16:31:41 UTC
I would consider having a look at bug 43655, it might be related. Could you try workaround proposed in comment 8 (bug 43655#c8) or comment 13 (bug 43655#c13)?
Comment 6 sowadski 2012-07-25 20:24:04 UTC
I am not using grub2, so I do not believe that the workaround in BUG 43655 are relevant. I do not have these lines in my grub.conf
Comment 7 sowadski 2012-07-25 20:39:10 UTC
Possible duplicate of BUG 42373?
Comment 8 Jerome Glisse 2012-07-26 23:25:59 UTC
Created attachment 64758 [details] [review]
Cleanup and fix mc programing

This patch should fix your issue
Comment 9 sowadski 2012-07-27 05:39:06 UTC
I do not see any improvement after applying the proposed patch
Comment 10 Chris 2013-11-01 14:02:36 UTC
Maybe I have the same problem. 

Tested on ubuntu 13.04 and 13.10, my new HD6450 just gives me the same corrupted screen as yours. On windows, it works with no problem. 

(In reply to comment #4)
> Created attachment 64641 [details]
> Picture of screen corruption
Comment 11 Chris 2013-11-01 14:21:51 UTC
Created attachment 88477 [details]
corrupted screen on ubuntu 13.04

corrupted screen on ubuntu 13.04
Comment 12 Chris 2013-11-05 05:40:50 UTC
I believe kernel-3.8 and 3.11 already have these patches, but it looks like doesn't work.

(In reply to comment #5)
> I would consider having a look at bug 43655, it might be related. Could you
> try workaround proposed in comment 8 (bug 43655#c8) or comment 13 (bug
> 43655#c13)?
Comment 13 Martin Peres 2019-11-19 08:28:28 UTC
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