This change was made by a bot. ** Changed in: linux (Ubuntu) Status: New => Confirmed
-- 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/1509111 Title: Hard lockup but certain UI elements keeps changing Status in linux package in Ubuntu: Confirmed Bug description: I recently upgraded to Wily and I discovered that my system hard freezes about 2-3 times a day. This is the usual: unresponsive keyboard (including magic sysrq), unresponsive USB, no response to pings over the network, music/audio loops, as well as no evidence of errors in syslog, kern.log, Xorg.log. However, there's one very unusual aspect of this lockup: I have an on screen clock to the second and when the lockup occurs, the clock keeps ticking by the second! This means that code must be executing somewhere... This happened all but one occurance of hard freeze, where the clock also froze. In fact, I was on Facebook at one point and saw that I was disconnected. The facebook UI then followed up with the animation of "Reconnecting... 10... 9... 8...". I feel like posting here is a very long shot, but maybe someone else has something similar. Next time this happens I'll try to hook this machine to ethernet to see if there's any response and try to ssh into it. I could also write a program that writes to syslog every 5 seconds and see if those get written when the machine is "locked up". Not sure what else I can do at this point. I can also memtest or play kernel roulette with mainline, but the machine was previously stable on utopic (with BIOS instead of UEFI boot, tho). ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-16-generic 4.2.0-16.19 [modified: boot/vmlinuz-4.2.0-16-generic] ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: shuhao 1884 F.... pulseaudio CurrentDesktop: XFCE Date: Thu Oct 22 17:49:21 2015 HibernationDevice: RESUME=UUID=0b162d26-cb30-4f74-b80c-6cd03fd55a69 InstallationDate: Installed on 2015-10-14 (8 days ago) InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151013) MachineType: LENOVO 4180J4C ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/zsh ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic.efi.signed root=/dev/mapper/xubuntu--vg-root ro noprompt quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-16-generic N/A linux-backports-modules-4.2.0-16-generic N/A linux-firmware 1.149 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/05/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 83ET76WW (1.46 ) dmi.board.asset.tag: Not Available dmi.board.name: 4180J4C dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr83ET76WW(1.46):bd07/05/2013:svnLENOVO:pn4180J4C:pvrThinkPadT420:rvnLENOVO:rn4180J4C:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4180J4C dmi.product.version: ThinkPad T420 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509111/+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