Bug 747292

Summary:	booting latest kernel on llano system has wrong resolution and can cause memory corruption
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:	jglisse, mgordon, 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 14:18:16 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 12:00:34 UTC

Description of problem:

Boot the latest EL6.2 development kernel on a llano system (with VGA unplugged and DVI plugged in), and it misdetects a connected VGA device. While debugging this problem upstream we noticed a memory corruption issue was also being caused by the VGA load detection process.

There are a group of fixes upstream that need to be backported to fix this issue.

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


How reproducible:


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Additional info:

Comment 1 Dave Airlie 2011-10-19 12:02:12 UTC

this may need AMD help in QA, as I don't think QE have this hardware in house.

I have backported the patches and confirmed they fix the bug on my llano system.

There may be affected llano hw in Westford.

Comment 2 RHEL Program Management 2011-10-19 12:11:07 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 14:52:06 UTC

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

Comment 11 errata-xmlrpc 2011-12-06 14:18:16 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