When I restarted my laptop in order to boot on 3.19 kernel so that I can uninstall the 4.5.0-040500rc7 kernel and install another kernel (like 4.4.5-wily) I got a system freeze: it seemed that it happened right after the system performed the logout. After starting, here is what I see in the syslog:
22 Mar 10 10:44:35 my-ubuntu avahi-daemon[810]: Invalid response packet from host fe80::2f7:6fff:fe6e:9126. 23 Mar 10 11:18:20 my-ubuntu avahi-daemon[810]: Invalid response packet from host fe80::d2a6:37ff:fee3:fb44. 24 Mar 10 11:29:08 my-ubuntu compiz: pam_ecryptfs: seteuid error 25 Mar 10 11:35:19 my-ubuntu compiz: pam_ecryptfs: seteuid error 26 Mar 10 11:50:25 my-ubuntu compiz: pam_ecryptfs: seteuid error 27 Mar 10 12:13:23 my-ubuntu compiz: pam_ecryptfs: seteuid error 28 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ 28 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ 28 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ 28 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ 28 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@Mar 10 12:16:20 my-ubuntu rsyslogd: [origin software="rsyslogd" swVersion="7.4.4" 28 x-pid="914" x-info="http://www.rsyslog.com"] start 29 Mar 10 12:16:20 my-ubuntu rsyslogd: rsyslogd's groupid changed to 104 30 Mar 10 12:16:20 my-ubuntu rsyslogd: rsyslogd's userid changed to 101 31 Mar 10 12:16:20 my-ubuntu kernel: [ 0.000000] Initializing cgroup subsys cpuset I also wanted to attach the generated /var/crash/_lib_systemd_systemd- logind.0.crash (because I installed and configured the Kernel Crash Dump tool yesterday afternoon), but I get from this web site: ERR_ACCESS_DENIED -- 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/1552333 Title: After upgrade to 4.2 kernel Ubuntu 14.04 LTS randomly freezes completely Status in linux package in Ubuntu: Incomplete Bug description: I am not sure whether this is related to Xorg because of following: Today it happened a few times this complete freeze. Before today never happened. Today I did a normal system update in the morning, then a ditro upgrade which just upgraded a few unimportant packages, then the first freeze happened. Later I upgraded the kernel from 3.19.0 to 4.2.0 and after that a few more freezes happened. I attached the apt log generated today and including the last update yesterday: apt_log_for_day_with_upgrade_to_kernel4.2.log. Each time this happened, before freeze I saw in the log something like: 9492 Mar 2 14:00:08 my-ubunty kernel: [ 2514.659171] [drm] HPD interrupt storm detected on connector HDMI-A-1: switching from hotplug detection to polling And once or twice I saw right after that something like: 9493 Mar 2 14:01:13 my-ubuntu compiz: pam_ecryptfs: seteuid error Then some binary content I also use disk encryption (the one from Ubuntu). Each time the freezing happened, the mouse and keyboard weer dead and the screen was frozen in whatever content was displaying at that point. So the only think I could do is to press the power button for 5 seconds. I upgraded from 3.19 kernel (linux-generic-lts-vivid) as follows: $ sudo apt-get update $ sudo apt-get install linux-generic-lts-wily Thank you. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8.1 ProcVersionSignature: Ubuntu 4.2.0-30.36~14.04.1-generic 4.2.8-ckt3 Uname: Linux 4.2.0-30-generic x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Wed Mar 2 16:35:13 2016 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu DkmsStatus: bcmwl, 6.30.223.248+bdcom, 3.19.0-51-generic, x86_64: installed bcmwl, 6.30.223.248+bdcom, 4.2.0-30-generic, x86_64: installed EcryptfsInUse: Yes GpuHangFrequency: Several times a day GpuHangReproducibility: Seems to happen randomly GpuHangStarted: Today GraphicsCard: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:05fe] Subsystem: Dell Device [1028:05fe] InstallationDate: Installed on 2015-09-28 (156 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: Dell Inc. XPS 15 9530 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-30-generic root=/dev/mapper/ubuntu--vg-root ro cgroup_enable=memory swapaccount=1 quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/15/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: XPS 15 9530 dmi.board.vendor: Dell Inc. dmi.board.version: A07 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA07:bd10/15/2014:svnDellInc.:pnXPS159530:pvrA07:rvnDellInc.:rnXPS159530:rvrA07:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: XPS 15 9530 dmi.product.version: A07 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1~ubuntu14.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Wed Mar 2 16:15:49 2016 xserver.configfile: default xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) NOUVEAU(G0): Failed to initialise context object: 2D_NVC0 (0) NOUVEAU(G0): Error initialising acceleration. Falling back to NoAccel xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.17.1-0ubuntu3.1~trusty1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552333/+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