Bug 624236

Summary:	Intermittent black screen on ThinkPad T510 when mode switch is attempted (Intel graphics, i5)
Product:	[Fedora] Fedora	Reporter:	Bojan Smojver <bojan>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	14	CC:	anton, dougsland, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-10-04 00:24:54 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bojan Smojver 2010-08-15 01:41:14 UTC

Description of problem:
Occasionally, mode switch on this system won't succeed on boot. The screen remains completely black, there is no disk activity and no key can bring anything back. The only fix is to power cycle the system.

Version-Release number of selected component (if applicable):
kernel-2.6.33.6-147.2.4.fc13.x86_64 (and others)

How reproducible:
Sometimes.

Steps to Reproduce:
1. Boot the system.
  
Actual results:
Sometimes mode switch fails, leaving the system with black screen and hung.

Expected results:
Should work.

Additional info:
http://www.smolts.org/client/show/pub_ebd16c9b-ba21-4d39-964a-cfd361713146

I searched Bugzilla for something similar and although there are some bugs that look marginally appropriate, this may in fact be something different. So, I'm opening a new one.

Comment 1 Chuck Ebbert 2010-08-17 02:29:24 UTC

Please try 2.6.34.3-37 from updates-testing.

Comment 2 Bojan Smojver 2010-08-30 01:45:07 UTC

OK, shall do. Although, I've seen this even with vanilla 2.6.35.

Comment 3 Bojan Smojver 2010-09-14 04:50:06 UTC

Haven't seen this particular thing for a while now, but because it is intermittent, I won't rule it out completely yet. I'm on 2.6.34.6-54.fc13.x86_64 right now.

Comment 4 Bojan Smojver 2011-04-03 04:28:31 UTC

Just seen this with kernel-2.6.35.12-88.fc14.x86_64. Moving to F-14.

Comment 5 Bojan Smojver 2011-10-04 00:24:54 UTC

Haven't seen this in a while with F-15. Closing.