I've reinstalled/upgraded since this bug was reported. Haven't experienced this in the new builds.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/903366 Title: system stopped responding instead of displaying lock screen. Status in “linux” package in Ubuntu: Incomplete Bug description: Walked away from the PC and returned 10 minutes later to sleeping monitors. No response to mouse or keyboard (numlock light did not respond.) Attempted switching consoles w/ctrl-alt-F1 and also got no response. Had to hold down power button on tower to force a restart. This is the second time in about a month that this has happened. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-14-generic 3.0.0-14.23 ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9 Uname: Linux 3.0.0-14-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 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: michael 1845 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfebdc000 irq 51' Mixer name : 'Analog Devices AD1984A' Components : 'HDA:11d4194a,10280276,00100400' Controls : 34 Simple ctrls : 20 Date: Mon Dec 12 13:57:26 2011 HibernationDevice: RESUME=UUID=1b2c2a80-7b3e-4afd-bf99-814575445e00 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) IwConfig: lo no wireless extensions. eth0 no wireless extensions. virbr0 no wireless extensions. MachineType: Dell Inc. OptiPlex 960 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=b61a5469-1073-4578-a9fe-47817a23cb46 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.0.0-14-generic N/A linux-backports-modules-3.0.0-14-generic N/A linux-firmware 1.60 RfKill: SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/30/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 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.:bvrA07:bd04/30/2010:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0Y958C:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 960 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/903366/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp