Hibernate (sys-power/pm-utils) fails, but suspend works?

njharris · n00b Joined: 17 Sep 2002 Posts: 13

I put a new laptop into service in mid-January this year, a Dell XPS17 with 8GB RAM, 1TB HDD (2x500G), Nvidia discrete graphics. I'm slightly bleeding-edge as I use "~amd64".

My previous laptop -- Dell 9300 -- ran Gentoo for 6 years, and I had no problem with suspend/hibernate. It's handy when you're traveling a lot.

I installed Gentoo and have been slowly working through all the functions I use. Video, audio, bluetooth, wired and wireless networking are all flawless under KDE 4.8.

Suspend to Ram worked out of the box, using "sys-power/pm-utils-1.4.1-r2" presently. I've made no modifications to the stock installation.

Hibernate to Disk, however fails utterly:

The laptop appears to start into the hibernate process, but the screen goes white and stays there indefinitely. I've waited up to 5 minutes to see if it's just a time issue, but it never powers-off. The only recovery mechanism is via a forced power-off (hold the power button off until the system shuts off).

I have both the kernel .config, and the grub command line, indicating /dev/sdb2 as the resume partition. It's 24GB, so I think space isn't an issue, unless it's too large.

"uname -a" output: Linux rockytop 3.2.6-gentoo #1 SMP PREEMPT Wed Feb 15 18:53:57 EST 2012 x86_64 Intel(R) Core(TM) i7-2760QM CPU @ 2.40GHz GenuineIntel GNU/Linux

I've done the usual forum search, bugzilla check, and even did a broader search for similar issues for other distributions. I've seen indications that the multi-core CPU may cause problems for others.

In attempting to diagnose the problem, I snapshotted '/var/log/messages' before attempting a Hibernate, then did a diff of the messages file after recovering from the forced power-off.

Message file after Hibernate (from KDE menu):

Hu · Moderator Joined: 06 Mar 2007 Posts: 21607

What is the output of emerge --info? Mostly, I want to see your choice of VIDEO_CARDS, but other things could come in handy as well.

As I read that log, the hibernation goes through all the motions, then fails at the last minute and undoes its work. However, the undo does not put your system back into a usable state. If the system hung during hibernate, you would not get most of the messages about CPUs going offline. Those messages are created after user processes are frozen, so if the hibernate does not unfreeze user processes, then syslog cannot record those messages. Thawing user processes occurs on resume or on recovery from a failed hibernation.

njharris · n00b Joined: 17 Sep 2002 Posts: 13

Hu · Moderator Joined: 06 Mar 2007 Posts: 21607

I see that you are using the proprietary nVidia drivers. Can you reproduce the problem with an untainted kernel?

fatriff · n00b Joined: 27 Feb 2012 Posts: 1

njharris · n00b Joined: 17 Sep 2002 Posts: 13

WvR · Posted: Wed Feb 29, 2012 6:51 am Post subject:

On my Compaq laptop, suspend works flawlessly but hibernate does not work. I use nvidia drivers, but IIRC there was some other reason why hibernate does not work. I never bothered to figure it out, suspend is good enough for me.

njharris · n00b Joined: 17 Sep 2002 Posts: 13