Bug 240082

Summary:	Resume from suspend fails when kvm/kvm_intel loaded on Lenovo X60
Product:	[Fedora] Fedora	Reporter:	James Bowes <jbowes>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED NEXTRELEASE	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	avi, bkearney, davej, jonathan.underwood, pcfe, richard
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-01-14 15:54:54 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 James Bowes 2007-05-14 23:37:35 UTC

With the kvm/kvm_intel modules loaded, my laptop will suspend to ram, but will
never resume. There will be some hard disk activity, but the little moon sleep
light will stay on. caps lock keys etc do not work either. Unloading the kvm
modules allows suspend and resume to work properly.

Some details:
kernel-2.6.21-1.3149.fc7.i686

$> lshal | grep system.hardware.version
  system.hardware.product = '1709G3U'  (string)

Intel(R) Core(TM)2 CPU T7200 @2.00GHz

Comment 1 Richard Hughes 2007-05-24 10:45:29 UTC

Does this still happen with the latest rawhide kernel? Thanks.

Comment 2 James Bowes 2007-05-24 12:58:10 UTC

Sadly, I can't tell. Something else is breaking suspend/resume with kernel
2.6.21-1.3194. I'll update this bug when I can determine if KVM is a problem or not.

Comment 3 Jonathan Underwood 2007-06-04 22:10:17 UTC

*** Bug 242333 has been marked as a duplicate of this bug. ***

Comment 4 Jonathan Underwood 2007-06-04 22:12:18 UTC

As I mentioned in 242333, I see the same thing on a Dell XPS M1210.

Having the following in /etc/pm/config.d/unload_modules fixes the problem,
allowing the machine to resume:

SUSPEND_MODULES="iwl3945 mac80211 kvm_intel kvm"

removing kvm_intel and kvm from that list renders the system unable to resume.

I wonder if the kvm patches mentioned here for the kernel are any help:

http://www.ussg.iu.edu/hypermail/linux/kernel/0706.0/0025.html

Comment 5 Richard Hughes 2007-06-05 09:04:01 UTC

(In reply to comment #4)
> removing kvm_intel and kvm from that list renders the system unable to resume.

I've added this to the suspend site, thanks.

Richard.

Comment 6 Patrick C. F. Ernzer 2007-06-15 12:54:52 UTC

To make for a smoother user experience, can we do one of these please (by order
of preference)?

  - make the kvm kernel modules handle suspend
  - make the kvm kernel modules self-unload on sleep
  - drop a file in /etc/pm/sleep.d/ to make sure kvm-amd, kvm-intel and kvm are 
on the SUSPEND_MODULES list

Thanks

PCFE

Comment 7 Avi Kivity 2007-07-23 08:54:24 UTC

2.6.23-rc1 now has reliable suspend-to-ram.  It should be easy to backport the 
patches to earlier kernels.

Comment 8 Richard Hughes 2007-07-23 09:01:03 UTC

>2.6.23-rc1 now has reliable suspend-to-ram.

Agreed, you guys rock. DaveJ, can we add this to the F7 kernel when you next do
a rebuild?

Comment 9 Jonathan Underwood 2008-01-12 00:15:36 UTC

As far as i can tell, this bug is fixed in F-7 and F-8, and could be closed.

Comment 10 James Bowes 2008-01-14 15:54:54 UTC

(In reply to comment #9)
> As far as i can tell, this bug is fixed in F-7 and F-8, and could be closed.

Agreed. I'll close it.