user session does not resume after suspend - IdeaPad U160

[Patrick Wright]

Natty Alpha 3 on a Lenovo IdeaPad U160

Steps:
Login as a user
Either wait for automatic suspend or manual suspend the session

Resume user session
screen remains black and never loads the user session

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-5-generic 2.6.38-5.32
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: patrickmw 1441 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 43'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:10ec0269,17aa600a,00100100 HDA:80862804,80860101,00100000'
   Controls : 17
   Simple ctrls : 9
Date: Mon Mar 7 17:39:05 2011
HibernationDevice: RESUME=UUID=f28f03d7-7aac-44dd-a082-1af00074d4b9
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
MachineType: LENOVO 08945KU
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-5-generic root=UUID=67063a39-77cb-40d4-a4b0-75cd44759b8a ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-5-generic N/A
 linux-backports-modules-2.6.38-5-generic N/A
 linux-firmware 1.48
SourcePackage: linux
StagingDrivers: brcm80211
Title: [STAGING]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/10/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 33CN14WW
dmi.board.asset.tag: Tag 12345
dmi.board.name: MoutCook
dmi.board.vendor: LENOVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr33CN14WW:bd05/10/2010:svnLENOVO:pn08945KU:pvrLENOVOIdeapadU160:rvnLENOVO:rnMoutCook:rvrNotApplicable:cvnLENOVO:ct10:cvrN/A:
dmi.product.name: 08945KU
dmi.product.version: LENOVO Ideapad U160
dmi.sys.vendor: LENOVO