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[Launchpad Bug Tracker <672793@xxxxxxxxxxxxxxxxxx>]

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This started happening on Thursday November 4th.

This only seems to happen when the host is idle at the console. although
a KVM instance was actively being used on one of the effected hosts.

The system will hang and will be unresponsive to any keyboard input
although you can see a mouse cursor.

ssh connections are closed as if they were filtered.

ctl-alt F* does not work

oddly enough a windows KVM host was still responsive.

A coworker is also having this issue with his machine which is running
vm's in virtualbox

Both systems are Dell Optiplex 960s

The system did not respond to a soft shutdown with the power button

We were forced to reboot by using the NMI shutdown by holding the power
button down.

Unfortunately it appears that syslog just quit logging and there are no
errors in any log files.

We both did run updates and here is the entry of what was updated that
day on my machine.

Start-Date: 2010-11-04  12:25:04
Upgrade: gvfs-fuse:amd64 (1.6.4-0ubuntu1, 1.6.4-0ubuntu1.1), ubufox:amd64 (0.9~rc2-0ubuntu5, 0.9~rc2-0ubuntu5.1), gvfs-backends:amd64 (1.6.4-0ubuntu1, 1.6.4-0ubuntu1.1), chromium-browser:amd64 (6.0.472.63~r59945-0ubuntu2, 7.0.517.41~r62167-0ubuntu0.10.10.1), lib32asound2:amd64 (1.0.23-1ubuntu2, 1.0.23-1ubuntu2.1), simple-scan:amd64 (2.32.0-0ubuntu3, 2.32.0-0ubuntu4), python-aptdaemon:amd64 (0.31+bzr506-0ubuntu2, 0.31+bzr506-0ubuntu4), alsa-utils:amd64 (1.0.23-2ubuntu3, 1.0.23-2ubuntu3.4), aptdaemon:amd64 (0.31+bzr506-0ubuntu2, 0.31+bzr506-0ubuntu4), libasound2:amd64 (1.0.23-1ubuntu2, 1.0.23-1ubuntu2.1), python-aptdaemon-gtk:amd64 (0.31+bzr506-0ubuntu2, 0.31+bzr506-0ubuntu4), xul-ext-ubufox:amd64 (0.9~rc2-0ubuntu5, 0.9~rc2-0ubuntu5.1), chromium-browser-inspector:amd64 (6.0.472.63~r59945-0ubuntu2, 7.0.517.41~r62167-0ubuntu0.10.10.1), libgvfscommon0:amd64 (1.6.4-0ubuntu1, 1.6.4-0ubuntu1.1), gvfs:amd64 (1.6.4-0ubuntu1, 1.6.4-0ubuntu1.1)
End-Date: 2010-11-04  12:25:11

root@gdahlmpc:/var/log# lsb_release -rd
Description:	Ubuntu 10.10

root@gdahlmpc:/var/log# uname -a
Linux gdahlmpc 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:45:36 UTC 2010 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
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:  gdahlm     2289 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfebdc000 irq 50'
   Mixer name	: 'Analog Devices AD1984A'
   Components	: 'HDA:11d4194a,10280276,00100400'
   Controls      : 34
   Simple ctrls  : 20
Date: Mon Nov  8 14:21:49 2010
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=f98434f0-ec69-4b2a-bf55-57d8bcb570bb
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928)
MachineType: Dell Inc. OptiPlex 960
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=4a9a32c5-a491-454e-b7fd-83b69dd0b45c ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:
 
SourcePackage: linux
WifiSyslog:
 Nov  8 11:51:26 gdahlmpc kernel: [ 3744.524589] lo: Disabled Privacy Extensions
 Nov  8 13:10:08 gdahlmpc kernel: [ 8466.786534] python[4072]: segfault at 100000000 ip 00007f9c9ba139ee sp 00007fff50fe77e0 error 4 in libdbusmenu-glib.so.1.0.17[7f9c9ba0f000+10000]
 Nov  8 14:20:04 gdahlmpc kernel: [12663.099345] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x7F (20100428/tbutils-314)
 Nov  8 14:20:04 gdahlmpc kernel: [12663.099430] ACPI Warning: Incorrect checksum in table [TCPA] - 0x00, should be 0x7F (20100428/tbutils-314)
dmi.bios.date: 02/17/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0Y958C
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/17/2009:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0Y958C:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 960
dmi.sys.vendor: Dell Inc.

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


** Tags: amd64 apport-bug bios-outdated-f11 kernel-config maverick needs-upstream-testing regression-release
-- 
system is wedged, new ssh connections are closed instantly and console is black with a mouse but does not accept keyboard input
https://bugs.launchpad.net/bugs/672793
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