Red Hat Bugzilla – Bug 240031
hibernate and supend fails
Last modified: 2007-11-30 17:12:04 EST
Description of problem:
pm-hibernate gives a message about shrinking memory, then "shutting down
console(s)", and then nothing more. pm-suspend just gives a blank screen, but
power stays on. In both cases I can't wake up the machine, I have to hard
reset, and it goes through the full boot (starting services etc). It worked
with previous kernel versions.
Version-Release number of selected component (if applicable):
but no problem in kernel-2.6.20-1.2933.fc6
Steps to Reproduce:
1. pm-hibernate or pm-suspend
Hibernate stops at "shutting down console(s)"
It should continue with saving to disk, stop the HD and shut down power. This
works fine in the earlier kernel-2.6.20-1.2933.fc6
I can't see anything relevant in dmesg or /var/log/messages, the messages
there are all about the boot process, not the shutdown.
The Laptop is a
Fujitsu-Siemens Amilo A1650G
AMD64 processor, 1GB memory
Between 2933 and 2948, support for tickless kernel was added. It's not the only
thing, but I'd consider it a possibility. Would you please try booting with
nohz=off on the kernel command line?
Yes, with nohz=off it works as it should (testing with 2.6.20-1.2952.fc6).
For your info, suspend and hibernate also work again in FC7
(2.6.21-1.3194.fc7) without the nohz=off option (it doesn't wake up from
suspend though, but that's a different matter).
Ok. I'll close this as fixed in the current release then. Please feel free to
open another bug for the other issue (if you haven't already).