i booted after linux-image upgrade from an earlier update of same today, logged in, and found X unresponsive. Ctl-Alt-Del rebooted the system gracefully.
ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.38
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-7.38-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jer 1538 F.... pulseaudio
CRDA:
country NL:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5490 - 5710 @ 40), (N/A, 27), DFS
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7eb8000 irq 45'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,1043831a,00100004'
Controls : 10
Simple ctrls : 6
Date: Wed Mar 23 05:04:36 2011
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=d7f0d305-2535-4710-a2ef-a8cbe199898b
MachineType: ASUSTeK Computer INC. 901
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=56a0a13f-89dc-4557-9934-2e4a1cbf4817 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-7-generic N/A
linux-backports-modules-2.6.38-7-generic N/A
linux-firmware 1.49
SourcePackage: linux
Title: kernel BUG at /build/buildd/linux-2.6.38/fs/ecryptfs/crypto.c:349!
UpgradeStatus: Upgraded to natty on 2010-12-05 (107 days ago)
WpaSupplicantLog:
dmi.bios.date: 06/11/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2103
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 901
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2103:bd06/11/2009:svnASUSTeKComputerINC.:pn901:pvrx.x:rvnASUSTeKComputerINC.:rn901:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
dmi.product.name: 901
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
After the reboot, i.e. now, everything works fine.