Public bug reported:

When the system attempts to suspend itself, it hangs and cannot be
resumed.  I have to power down the machine to recover.  This used to
work in 11.04.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-18-generic-pae 3.2.0-18.28
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.94-0ubuntu1
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  thomas     2089 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not 
found.
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfebfc000 irq 45'
   Mixer name   : 'SigmaTel STAC9200'
   Components   : 'HDA:83847690,102801a8,00102201'
   Controls      : 13
   Simple ctrls  : 6
CurrentDmesg:
 [   47.188707] vboxdrv: fAsync=0 offMin=0x762 offMax=0x52c4
 [   47.188834] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 
'normal'.
 [   47.188839] vboxdrv: Successfully loaded version 4.1.8_Ubuntu (interface 
0x00190000).
 [   47.220794] vboxpci: IOMMU not found (not registered)
 [   48.134538] init: plymouth-stop pre-start process (1782) terminated with 
status 1
Date: Mon Mar  5 08:37:04 2012
HibernationDevice: RESUME=UUID=c1f91392-ce66-46dd-a3c7-743fbbfd38e9
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MachineType: Dell Inc. Precision WorkStation 380
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:
 0 radeondrmfb
 1 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic-pae 
root=UUID=54c8772a-62f1-4edb-8bb1-b671d6f8deac ro vga=769 quiet splash 
radeon.modeset=1 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-18-generic-pae N/A
 linux-backports-modules-3.2.0-18-generic-pae  N/A
 linux-firmware                                1.71
RfKill:
 
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-02-19 (14 days ago)
dmi.bios.date: 04/18/2006
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0CJ774
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA07:bd04/18/2006:svnDellInc.:pnPrecisionWorkStation380:pvr:rvnDellInc.:rn0CJ774:rvr:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision WorkStation 380
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise

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https://bugs.launchpad.net/bugs/947166

Title:
  System freeze on suspend to RAM

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