I have an Asus Striker II Formula motherboard, which has an nVidia-based "fakeraid" SATA controller. I have 2 hard drives striped with it's firmware. Across this stripe, I have both Windows 7 and Ubuntu 11.04 installed.
Whenever I reboot from Ubuntu 11.04, the computer has to reboot twice, whether I reboot back into Windows OR Ubuntu. Either OS will get to the point of loading the primary video resolution, then spontaneously reboot the computer AGAIN. If I shutdown from 11.04, and then physically restart the computer, the BIOS will come up to the point that the lights come on the keyboard, then it will spontaneous reboot again, from within the BIOS.
Four times, now, my /home partition has gotten scrambled during the reboots, and needed an fsck. (Which was an enormous pain due to my encrypted home directory because dm_crypt doesn't like to let it go.) I was hoping that this was some sort of interaction with ecryptfs, but I took that off my home directory, and the problem happened again anyway.
This does NOT happen when rebooting from Windows. This also does NOT happen when rebooting from Ubuntu 10.10. (I downgraded for a time, and the problem went away.) It would therefore seem to be a problem with 2.6.38 which is not present with 2.6.36.
I've tried loading vanilla kernels from the PPA. That repo's 2.6.36 wouldn't boot at all. It's 2.6.37 doesn't cause the double-reboot, but it still scrambled my home directory (and that's when I removed the ecryptfs).
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image (not installed)
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
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: dkrider 2467 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfdffc000 irq 46'
Mixer name : 'Analog Devices AD1984'
Components : 'HDA:11d41984,10280214,00100400'
Controls : 21
Simple ctrls : 14
Date: Fri Aug 19 08:36:50 2011
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=416cc9d6-0397-464d-a188-e24fa536d573
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Dell Inc. Precision WorkStation T3400
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic root=UUID=1d04b144-1490-407d-b564-f61db632cbef ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-10-generic N/A
linux-backports-modules-2.6.38-10-generic N/A
linux-firmware 1.52
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-07-26 (23 days ago)
dmi.bios.date: 03/21/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 0TP412
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/21/2008:svnDellInc.:pnPrecisionWorkStationT3400:pvr:rvnDellInc.:rn0TP412:rvr:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision WorkStation T3400
dmi.sys.vendor: Dell Inc.
Note that `ubuntu-bug' captured the information from my computer at work, and NOT from my home computer, where I'm having the problem. Unfortunately, I'm leaving my home computer OFF while I figure out what to do next, and there doesn't seem to be a way to submit a bug to Launchpad outside of `ubuntu-bug' any more, so... I'm sorry.