I attached /var/log/apt/history.log which covers January. Some explanation on 2015.01.25-26 entries:
2015-01-25 11:05:48 Bunch of updates, looks like it was initiated by Software Updater. I didn't spot anything closely related to the bug, but then, I'm not really an expert on this... 2015-01-25 22:57:34 This was shortly after I encountered the bug. I googled around, looked at some other existing bug tickets, and found some general advice on how to check BIOS via the fwts tool. Unfortunately, I didn't found any official updates for my motherboard on Gigabyte's website, and also didn't really grok most of fwts's output. Start-Date: 2015-01-25 23:25:47 I switched from the nvidia to nouveau before trying to install a mainline kernel version. Start-Date: 2015-01-25 23:50:24 I installed the mainline kernel based on what I read at https://wiki.ubuntu.com/Kernel/MainlineBuilds, this log entry marks the removal. Start-Date: 2015-01-25 23:52:35 Switching back from nouveau to nvidia. Start-Date: 2015-01-26 20:04:35 Updates initiated by Software Updater. Start-Date: 2015-01-26 21:18:42 Switching from nvidia to nouveau. (After which I installed another mainline kernel version via dpkg.) ** Attachment added: "/var/log/apt/history.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1414494/+attachment/4308267/+files/history.log -- 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/1414494 Title: reboot after shutdown Gigabyte GA-P41T-D3 motherboard, Intel G41 Express chipset Status in linux package in Ubuntu: Incomplete Bug description: This bug is pretty similar to the one described in #1409279: shutdown from GUI results in shutdown, some seconds of silence, then reboot. Hardware shutdown (holding power button for 4 secs) works OK. Last kernel update happened on 2015.01.10, but I just started noticing this bug today (2015.01.25), so it may not be a kernel issue. As I see, in similar cases the general practice should be to try the latest upstream kernel, so I guess I will try that as a next step. Any questions or advice on how to diagnose this properly is welcome. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-44-generic 3.13.0-44.73 ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12 Uname: Linux 3.13.0-44-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: corphicks 1877 F.... pulseaudio /dev/snd/controlC0: corphicks 1877 F.... pulseaudio /dev/snd/controlC1: corphicks 1877 F.... pulseaudio CurrentDesktop: XFCE Date: Sun Jan 25 22:20:00 2015 HibernationDevice: RESUME=UUID=cf5c04c0-7bdb-41f5-b91c-6c9bb0fdaf90 InstallationDate: Installed on 2014-04-30 (270 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. P41T-D3 ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-44-generic root=UUID=2e1f47f8-1d20-48a6-9354-5ba871c8bfc8 ro quiet splash RelatedPackageVersions: linux-restricted-modules-3.13.0-44-generic N/A linux-backports-modules-3.13.0-44-generic N/A linux-firmware 1.127.11 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/31/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F1 dmi.board.name: P41T-D3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF1:bd05/31/2010:svnGigabyteTechnologyCo.,Ltd.:pnP41T-D3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP41T-D3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: P41T-D3 dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1414494/+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
