Comment 0 for bug 1071012

During heavy disk write activity (eg. swapping, writing large files to disk), the system freezes hard (becomes 100% unresponsive) with the CPU fan spun up high, and stays that way until a hard reset.

I've noticed this problem under two separate installs of 12.04 64-bit, on two different SSDs. There seems to be some race condition exposed by the pure speed of the writes?

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-32-generic 3.2.0-32.51
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu14
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tom 2101 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e10000 irq 45'
   Mixer name : 'Intel PantherPoint HDMI'
   Components : 'HDA:11068446,15582702,00100000 HDA:80862806,15582702,00100000'
   Controls : 33
   Simple ctrls : 18
Date: Wed Oct 24 15:24:35 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=8b07a0c0-c9d4-4e2d-b6a0-f4c83e095727
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MachineType: System76, Inc. Gazelle Professional
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-32-generic root=UUID=9aca9502-5d32-4ca7-b011-f53d95eb5d65 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-32-generic N/A
 linux-backports-modules-3.2.0-32-generic N/A
 linux-firmware 1.79.1
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/16/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: Gazelle Professional
dmi.board.vendor: System76, Inc.
dmi.board.version: gazp7
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd05/16/2012:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp7:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp7:cvnNoEnclosure:ct9:cvrN/A:
dmi.product.name: Gazelle Professional
dmi.product.version: gazp7
dmi.sys.vendor: System76, Inc.