Red Hat Bugzilla – Full Text Bug Listing
|Summary:||Dell XPS M1210 fails to resume|
|Product:||[Fedora] Fedora||Reporter:||Jonathan Underwood <jonathan.underwood>|
|Component:||kvm||Assignee:||Kernel Maintainer List <kernel-maint>|
|Status:||CLOSED DUPLICATE||QA Contact:||Brian Brock <bbrock>|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2007-06-04 18:10:15 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Jonathan Underwood 2007-06-03 08:51:18 EDT
Description of problem: Suspend (to ram) on a Dell XPS M1210 stopped working with F7. It worked fine with FC6 with all kernels. The machine suspends without hitch, but on trying to resume it either completely hangs with no screens on and no activity, or reboots instantly. Let me know if there's anything else I can do to debug. Version-Release number of selected component (if applicable): 2.6.21-1.3194.fc7 How reproducible: Everytime Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Comment 1 Jonathan Underwood 2007-06-03 08:57:51 EDT
Have tried the following quirks to no avail: --quirk-s3-bios --quirk-s3-mode --quirk-dpms-on
Comment 2 Jonathan Underwood 2007-06-03 09:08:44 EDT
I tried to follow the debugging instructions as described here: http://www.mjmwired.net/kernel/Documentation/power/s2ram.txt but, oddly, the file /sys/power/pm_trace does not exist: # ls /sys/power/ disk image_size resume state What gives?
Comment 3 Jonathan Underwood 2007-06-03 09:13:10 EDT
Hm. This seems to be because CONFIG_PM_TRACE and CONFIG_PM_DEBUG are not set for the current F7 kernel build. Wouldn't it be a grand idea to turn these back on again so users can debug suspend/resume problems without having to rebuild kernel?
Comment 4 Jonathan Underwood 2007-06-04 17:51:47 EDT
Aha! Culprit found. This is caused by the kvm and kvm_intel kernel modules. Having the following in /etc/pm/config.d/unload_modules does the trick, 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.
Comment 5 Jonathan Underwood 2007-06-04 17:55:12 EDT
Damn bugzilla, can't reassign the bug to kvm, as it's officially in Extras. Closing bug here and opening a new one. Did I mention that I hate the Fedora/RH bugzilla?
Comment 6 Jonathan Underwood 2007-06-04 18:00:40 EDT
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 7 Jonathan Underwood 2007-06-04 18:08:25 EDT
Sorry, managed to make a mess of reassigning this bug.