Red Hat Bugzilla – Bug 242333
Dell XPS M1210 fails to resume
Last modified: 2007-11-30 17:12:06 EST
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
Let me know if there's anything else I can do to debug.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Have tried the following quirks to no avail:
I tried to follow the debugging instructions as described here:
but, oddly, the file /sys/power/pm_trace does not exist:
# ls /sys/power/
disk image_size resume state
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?
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.
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?
I wonder if the kvm patches mentioned here for the kernel are any help:
Sorry, managed to make a mess of reassigning this bug.
*** This bug has been marked as a duplicate of 240082 ***