Bug 26789

Summary: Screen corruption when using radeon from 2.6.33 drm-next kernel
Product: xorg Reporter: Hans Bakker <hansmbakker>
Component: Driver/RadeonAssignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED INVALID QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.5 (2009.10)   
Hardware: x86 (IA32)   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Screenschot of firefox with visible glitches none

Description Hans Bakker 2010-02-27 06:28:40 UTC 
I'm testing the 2.6.33 drm-next kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-next/current/ on Kubuntu Lucid.

My gpu is an Ati Modility Radeon HD 4530 with 256 MB RAM.

When using this kernel I encounter glitches / bad rendering in firefox: some characters are distorted / replaced by other characters. Also sometimes glitches show up the firefox menu bar or parts of it disappear. When closing a javascript photo frame popup it leaves a black garbled area which can be cleant by scrolling up and down.

Dmesg reports this set of errors many times repeated:
[  916.493405] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !           
[  916.522047] radeon 0000:01:00.0: z/stencil with no depth buffer              
[  916.522053] radeon 0000:01:00.0: r600_packet3_check:1055 invalid cmd stream 140

Maybe glitches will show up in other programs as well. I did not encounter this when using other kernels.

If I need to specify more information please ask.
Comment 1 Hans Bakker 2010-02-27 06:29:30 UTC 
Created attachment 33622 [details]
Screenschot of firefox with visible glitches
Comment 2 Alex Deucher 2010-02-27 08:30:23 UTC 
Update to the latest xf86-video-ati.
Comment 3 Alex Deucher 2010-10-19 19:17:37 UTC 
closing due to lack of feedback.

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