Comment 0 for bug 721576

Call trace seems to show this is related to EFI, it happens every time on reboot with 2.6.38-1 and 2.6.38-4 see attached images.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image (not installed)
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-4.31-generic 2.6.38-rc5
Uname: Linux 2.6.38-4-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xfb620000 irq 57'
   Mixer name : 'Realtek ALC892'
   Components : 'HDA:10ec0892,10438469,00100302'
   Controls : 32
   Simple ctrls : 18
Card1.Amixer.info:
 Card hw:1 'default'/'Logitech EasyCall Speakerphone at usb-0000:00:1d.0-1.1.2, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:0a06'
   Controls : 10
   Simple ctrls : 6
Card2.Amixer.info:
 Card hw:2 'NVidia'/'HDA NVidia at 0xfb080000 irq 17'
   Mixer name : 'Nvidia GPU 18 HDMI/DP'
   Components : 'HDA:10de0018,10de0101,00100100'
   Controls : 16
   Simple ctrls : 4
Date: Fri Feb 18 23:16:15 2011
HibernationDevice: RESUME=UUID=9f0f4960-5c3c-486e-a7ce-febfc8b21760
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 LC_MESSAGES=en_GB.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-4-generic root=UUID=160ca738-b158-4323-a87d-f6c753543745 ro rootflags=subvol=@ quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-4-generic N/A
 linux-backports-modules-2.6.38-4-generic N/A
 linux-firmware 1.47
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 01/20/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1253
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8P67 PRO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1253:bd01/20/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8P67PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer