Public bug reported:

Just installed Ubuntu 11.04 on an Intel DQ57TM motherboard with the
latest BIOS revision. Configured the system to boot using EFI. Ubuntu
installed properly on the EFI system but when it came time to reboot the
computer the kernel crashes right before the reboot operation is to take
place. This happened both from the installer CD as well as the installed
system. This happens so late in the process that it is not in any of the
log files.

So I had to snap pictures with my iphone camera. I will upload them. The fix is 
easy. All I had to do to remedy the problem was to add the following to the 
kernel configuration line via grub:
reboot=a,w

That command tells the kernel to use ACPI and not EFI runtime services
to reboot. When using ACPI the kernel reboots perfectly.

The bug is either in the kernel or my systems EFI firmware but either
way when isntalling grub-efi it might be a good idea to modify
/etc/default/grub to add reboot=a,w to the kernel command line.

Pictures with crash will follow.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-server 2.6.38-8.42
ProcVersionSignature: Ubuntu 2.6.38-8.42-server 2.6.38.2
Uname: Linux 2.6.38-8-server x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices: **** List of CAPTURE Hardware Devices ****
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  jarrett    1392 F.... xfce4-volumed
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe520000 irq 43'
   Mixer name   : 'Intel IbexPeak HDMI'
   Components   : 'HDA:80862804,80860038,00100000'
   Controls      : 4
   Simple ctrls  : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Fri Apr 29 11:42:24 2011
HibernationDevice: RESUME=UUID=b3756254-e1be-4e85-ac07-f3a6bece2650
InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 
(20110426)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-server 
root=UUID=0ce932b6-1cc1-4432-bd8c-d299b272367e ro quiet splash reboot=a,w 
rootflags=barrier=0,commit=60,user_xattr,acl,data=writeback,noatime,nodiratime 
vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-server N/A
 linux-backports-modules-2.6.38-8-server  N/A
 linux-firmware                           1.52
RfKill:
 
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/20/2011
dmi.bios.vendor: Intel Corp.
dmi.bios.version: TMIBX10H.86A.0044.2011.0420.1427
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DQ57TM
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE70931-401
dmi.chassis.type: 3
dmi.modalias: 
dmi:bvnIntelCorp.:bvrTMIBX10H.86A.0044.2011.0420.1427:bd04/20/2011:svn:pn:pvr:rvnIntelCorporation:rnDQ57TM:rvrAAE70931-401:cvn:ct3:cvr:

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


** Tags: amd64 apport-bug natty

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https://bugs.launchpad.net/bugs/773364

Title:
  Kernel crash on reboot

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