[Bug 792007] Re: natty suspend & hibernate hang with nfs home directory

[Chris]

I can not prove this from your output but I had a similar problem and found that it was network manager doing the evil work.
What was happening was that network manager saw the system was going down to low power mode so disconnected the Ethernet, this leaves NFS with nowhere to talk to so NFS sits there waiting for the server to reply, the kernel grows a big queue and hey presto it looks like a hang.
If you get to the text mode screen using ctrl-alt-f1 or similar and get the network back up it can be recovered sometimes.

I just wish they would get rid of network manager and let the kernel do
what it needs to during these changes in state.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to nfs-utils in Ubuntu.
https://bugs.launchpad.net/bugs/792007

Title:
  natty suspend & hibernate hang with nfs home directory

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  I have a system running a fairly fresh installation of Natty. It used
  to do both suspend and hibernate just fine. Now I have moved the /home
  directory to NFS4 and neither suspend nor hibernate work. The system
  seems to 'hang'. The screens stay black. Sometimes you can switch to a
  text console and reboot the system with Ctrl+Alt+Delete, but often
  that also just hangs.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-8-generic 2.6.38-8.42
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
     Subdevices: 2/2
     Subdevice #0: subdevice #0
     Subdevice #1: subdevice #1
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  casandro   1894 F.... pulseaudio
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xd3220000 irq 43'
     Mixer name	: 'Analog Devices AD1882'
     Components	: 'HDA:11d41882,80861003,00100300'
     Controls      : 41
     Simple ctrls  : 24
  Date: Thu Jun  2 21:07:39 2011
  HibernationDevice: RESUME=UUID=d326560c-e385-4579-ad6f-16318a08281e
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
  ProcEnviron:
   LANGUAGE=de_DE:en
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=b0ea53f7-8755-4a90-9e96-d0e6e7824d0f ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-8-generic N/A
   linux-backports-modules-2.6.38-8-generic  N/A
   linux-firmware                            1.52
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/13/2009
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: CBQ4510H.86A.0083.2009.0513.1002
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: DQ45CB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAE30148-205
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorp.:bvrCBQ4510H.86A.0083.2009.0513.1002:bd05/13/2009:svn:pn:pvr:rvnIntelCorporation:rnDQ45CB:rvrAAE30148-205:cvn:ct3:cvr:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/792007/+subscriptions