Bug 747291

Summary:	booting latest kernel on radeon hd 6450 (CAICOS) results in corrupt screen/memory
Product:	Red Hat Enterprise Linux 6	Reporter:	Dave Airlie <airlied>
Component:	kernel	Assignee:	Dave Airlie <airlied>
Status:	CLOSED ERRATA	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.2	CC:	herrold, jglisse, syeghiay, tpelka, vsharapo
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-2.6.32-212.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-12-06 14:18:13 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	750914

Description Dave Airlie 2011-10-19 11:56:09 UTC

Description of problem:

Booting the latest EL6.2 kernel on CAICOS family of radeon cards (radeonhd 6450), gives a garbled screen and can cause memory corruption.

Version-Release number of selected component (if applicable):


How reproducible:

Boot nearly any hd6450, not all suffer the problem though.

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Dave Airlie 2011-10-19 11:58:22 UTC

this has been debugged upstream and I've tested a backported patch against the 210 kernel and it works fine here.

there are low-end GPUs but the problem could cause other problems on all r600 and newer GPUs.

we may need AMD help to QA this, as I'm not sure RH QE has the required hw to test.

Comment 2 RHEL Program Management 2011-10-19 12:11:11 UTC

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

Comment 5 Aristeu Rozanski 2011-10-25 14:52:03 UTC

Patch(es) available on kernel-2.6.32-212.el6

Comment 13 errata-xmlrpc 2011-12-06 14:18:13 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2011-1530.html