Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 876938

Summary: [drm] No buffer for z buffer on RV380
Product: Red Hat Enterprise Linux 6 Reporter: Tomas Pelka <tpelka>
Component: xorg-x11-drv-atiAssignee: Jérôme Glisse <jglisse>
Status: CLOSED NOTABUG QA Contact: Desktop QE <desktop-qa-list>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.4   
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-11-15 19:07:58 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
screenshot none

Description Tomas Pelka 2012-11-15 10:39:48 UTC 
Created attachment 645574 [details]
screenshot

Description of problem:
when compiz enabled I got lot of 

[drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[drm:r100_cs_track_check] *ERROR* [drm] No buffer for z buffer !

in dmesg.

Screen got scrambled, see screenshot.

Version-Release number of selected component (if applicable):
kernel-2.6.32-340.el6
xorg-x11-drv-ati-6.99.99-1.el6

How reproducible:
100%

Steps to Reproduce:
1. enable compiz via desktop-effects
2.
3.
  
Actual results:
scrambled screen

Expected results:


Additional info:

02:00.1 Display controller [0380]: Advanced Micro Devices [AMD] nee ATI RV380 [Radeon X600] [1002:5b72]
	Subsystem: Advanced Micro Devices [AMD] nee ATI Device [1002:0b03]
	Flags: bus master, fast devsel, latency 0
	Memory at fccf0000 (64-bit, non-prefetchable) [size=64K]
	Capabilities: [50] Power Management version 2
	Capabilities: [58] Express Endpoint, MSI 00
Comment 2 Jérôme Glisse 2012-11-15 15:58:34 UTC 
Is this with dual screen ? If so how big the screens are ? Per 
https://bugzilla.redhat.com/show_bug.cgi?id=876943

This hw has a limit of 2560 in any direction for 3d rendering and those compositing
Comment 3 Tomas Pelka 2012-11-15 19:07:58 UTC 
OK closing this one as well.