Bug 500990

Summary:	blank display when starting X on radeon with KMS disabled
Product:	[Fedora] Fedora	Reporter:	Jeff Layton <jlayton>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	itamar, kernel-maint, quintela, steved, yaneti
Target Milestone:	---	Keywords:	Regression
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-05-16 01:48:00 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 Jeff Layton 2009-05-15 12:01:32 UTC

On kernel-PAE-2.6.29.3-140.fc11.i686, with KMS disabled, starting X results in a blank screen (no display at all). It's also unresponsive to Ctrl-Alt-Backspace even though DontZap is off. The machine (a laptop) seems to be responsive, and if I hit the power button it eventually shuts down cleanly, so it seems to mainly be a problem with the display.

Booting with KMS enabled seems to "fix" this. But as it's a laptop, I still need the ability to suspend and hibernate, and that's not ever worked on this laptop with KMS enabled (see bug 471711).

Downgrading to kernel-PAE-2.6.29.2-126.fc11.i686 also corrects the issue.

The laptop has this display chip:

01:05.0 VGA compatible controller: ATI Technologies Inc Radeon XPRESS 200M 5955 (PCIE)

Let me know if you need other info.

Comment 1 Yanko Kaneti 2009-05-15 13:16:58 UTC

Most likely a dupe of bug 500801
try upgrading xorg-x11-drv-ati from koji.
http://koji.fedoraproject.org/koji/buildinfo?buildID=102206

Comment 2 Jeff Layton 2009-05-16 01:48:00 UTC

Confirmed. Updating xorg-x11-drv-ati fixed the problem.

Thanks for the tip.

*** This bug has been marked as a duplicate of bug 500801 ***