I just got another reboot using 4.4.0-58-lowlatency, so I guess it wasn't exactly the kernel change that triggered this. Attached is a new kernel log with several backraces showing the i915 driver and drm. I notice there were a few drm packages updates also:
Start-Date: 2016-01-18 12:58:44 Commandline: apt full-upgrade Install: linux-image-4.2.0-24-generic:amd64 (4.2.0-24.29~14.04.1, automatic), linux-tools-4.2.0-24-generic:amd64 (4.2.0-24.29~14.04.1, automatic), linux-lts-wily-tools-4.2.0-24:amd64 (4.2.0-24.29~14.04.1, automatic), linux-headers-3.13.0-75:amd64 (3.13.0-75.119, automatic), linux-headers-3.13.0-75-generic:amd64 (3.13.0-75.119, automatic), linux-image-4.2.0-24-lowlatency:amd64 (4.2.0-24.29~14.04.1, automatic), linux-image-extra-4.2.0-24-generic:amd64 (4.2.0-24.29~14.04.1, automatic) Upgrade: apache2-utils:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9), apt:amd64 (1.0.1ubuntu2.10, 1.0.1ubuntu2.11), linux-headers-generic:amd64 (3.13.0.74.80, 3.13.0.75.81), apt-transport-https:amd64 (1.0.1ubuntu2.10, 1.0.1ubuntu2.11), os-prober:amd64 (1.63ubuntu1, 1.63ubuntu1.1), libdrm-intel1:amd64 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), libdrm-intel1:i386 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), apt-utils:amd64 (1.0.1ubuntu2.10, 1.0.1ubuntu2.11), libdrm-radeon1:amd64 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), libdrm-radeon1:i386 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), linux-tools-common:amd64 (3.13.0-74.118, 3.13.0-75.119), duplicity:amd64 (0.6.23-1ubuntu4.1, 0.6.23-1ubuntu4.2), libapt-inst1.5:amd64 (1.0.1ubuntu2.10, 1.0.1ubuntu2.11), ifupdown:amd64 (0.7.47.2ubuntu4.1, 0.7.47.2ubuntu4.3), apache2-doc:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9), linux-image-generic-lts-wily:amd64 (4.2.0.23.17, 4.2.0.24.18), libapt-pkg4.12:amd64 (1.0.1ubuntu2.10, 1.0.1ubuntu2.11), linux-tools-virtual-lts-wily:amd64 (4.2.0.23.17, 4.2.0.24.18), linux-image-lowlatency-lts-wily:amd64 (4.2.0.23.17, 4.2.0.24.18), libdrm-nouveau2:amd64 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), libdrm-nouveau2:i386 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), apache2-data:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9), libgbm1:amd64 (10.1.3-0ubuntu0.5, 10.1.3-0ubuntu0.6), linux-firmware:amd64 (1.127.19, 1.127.20), apache2:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9), apache2-bin:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9), linux-libc-dev:amd64 (3.13.0-74.118, 3.13.0-75.119), python-bzrlib:amd64 (2.6.0+bzr6593-1ubuntu1.1, 2.6.0+bzr6593-1ubuntu1.5), libdrm2:amd64 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), libdrm2:i386 (2.4.60-2~ubuntu14.04.1, 2.4.64-1~ubuntu14.04.1), apache2-suexec-pristine:amd64 (2.4.7-1ubuntu4.8, 2.4.7-1ubuntu4.9) Purge: linux-image-extra-4.2.0-22-generic:amd64 (4.2.0-22.27~14.04.1), linux-image-4.2.0-22-generic:amd64 (4.2.0-22.27~14.04.1), linux-headers-3.13.0-74-generic:amd64 (3.13.0-74.118), linux-headers-3.13.0-74:amd64 (3.13.0-74.118) Error: Sub-process /usr/bin/dpkg returned an error code (1) End-Date: 2016-01-18 13:00:13 Start-Date: 2017-01-26 17:43:45 Commandline: apt full-upgrade Requested-By: luca (1000) Upgrade: libkrb5-3:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libkrb5-3:i386 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libgssapi-krb5-2:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libgssapi-krb5-2:i386 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libgles2-mesa:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), krb5-multidev:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libkadm5clnt-mit9:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libdrm-nouveau2:amd64 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libdrm-nouveau2:i386 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libkrb5-dev:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libpcsclite1:amd64 (1.8.14-1ubuntu1, 1.8.14-1ubuntu1.16.04.1), thunderbird-locale-es-ar:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), libgles1-mesa:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libglapi-mesa:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libglapi-mesa:i386 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), humanity-icon-theme:amd64 (0.6.10, 0.6.10.1), dub:amd64 (1.1.2-0, 1.2.0-0), libkdb5-8:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libxatracker2:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libk5crypto3:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libk5crypto3:i386 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libegl1-mesa:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libgbm1:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), krb5-locales:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), thunderbird-gnome-support:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), libdrm-amdgpu1:amd64 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libdrm-amdgpu1:i386 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libkrb5support0:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), libkrb5support0:i386 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), thunderbird-locale-en-gb:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), thunderbird-locale-en-us:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), libgssrpc4:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), firefox-locale-de:amd64 (51.0+build2-0ubuntu0.16.04.1, 51.0.1+build2-0ubuntu0.16.04.1), firefox-locale-en:amd64 (51.0+build2-0ubuntu0.16.04.1, 51.0.1+build2-0ubuntu0.16.04.1), libwayland-egl1-mesa:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libdrm2:amd64 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libdrm2:i386 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libgl1-mesa-dri:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libgl1-mesa-dri:i386 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), thunderbird:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), openjdk-8-jre-headless:amd64 (8u111-b14-2ubuntu0.16.04.2, 8u121-b13-0ubuntu1.16.04.2), libgl1-mesa-glx:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libgl1-mesa-glx:i386 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libdrm-intel1:amd64 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libdrm-intel1:i386 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), firefox:amd64 (51.0+build2-0ubuntu0.16.04.1, 51.0.1+build2-0ubuntu0.16.04.1), libdrm-radeon1:amd64 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), libdrm-radeon1:i386 (2.4.67-1ubuntu0.16.04.2, 2.4.70-1~ubuntu16.04.1), mesa-vdpau-drivers:amd64 (11.2.0-1ubuntu2.2, 12.0.6-0ubuntu0.16.04.1), libkadm5srv-mit9:amd64 (1.13.2+dfsg-5ubuntu1, 1.13.2+dfsg-5ubuntu2), thunderbird-locale-de:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), thunderbird-locale-en:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1), thunderbird-locale-es:amd64 (1:45.6.0+build2-0ubuntu0.16.04.1, 1:45.7.0+build1-0ubuntu0.16.04.1) End-Date: 2017-01-26 17:44:09 I definitely had problems before the 26th, it could be that started after the 18th. Is my work laptop and I haven't used it much between the 18th and the 23rd. Also, I don't know if it's relevant, but it frozen when I was using it, but the reboots are always when I'm away from the laptop, I don't know if it could be the screen locking/blanking what causes it. Should I test anyway with latest v4.4 kernel or should I try something else, like downgrading the drm pacakges (and which ones)? Thanks! ** Attachment added: "New crash log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659621/+attachment/4810777/+files/kern.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/1659621 Title: Random freezes and reboots since last kernel update Status in linux package in Ubuntu: Incomplete Status in linux source package in Xenial: Incomplete Bug description: I noticed my Laptop () started to freeze and reboot randomly and checking the apt logs the date where this started matches a kernel update: Start-Date: 2017-01-22 18:09:20 Commandline: apt full-upgrade Requested-By: luca (1000) Install: linux-image-4.4.0-62-lowlatency:amd64 (4.4.0-62.83, automatic) Upgrade: linux-libc-dev:amd64 (4.4.0-59.80, 4.4.0-62.83), linux-image-lowlatency:amd64 (4.4.0.59.62, 4.4.0.62.65), libapt-inst2.0:amd64 (1.2.18, 1.2.19), libsystemd0:amd64 (229-4ubuntu15, 229-4ubuntu16), libsystemd0:i386 (229-4ubuntu15, 229-4ubuntu16), apt:amd64 (1.2.18, 1.2.19), sudo:amd64 (1.8.16-0ubuntu1.2, 1.8.16-0ubuntu1.3), udev:amd64 (229-4ubuntu15, 229-4ubuntu16), libapt-pkg5.0:amd64 (1.2.18, 1.2.19), libudev1:amd64 (229-4ubuntu15, 229-4ubuntu16), libudev1:i386 (229-4ubuntu15, 229-4ubuntu16), docker-engine:amd64 (1.12.6-0~ubuntu-xenial, 1.13.0-0~ubuntu-xenial), firefox-locale-de:amd64 (50.1.0+build2-0ubuntu0.16.04.1, 51.0+build2-0ubuntu0.16.04.1), systemd-sysv:amd64 (229-4ubuntu15, 229-4ubuntu16), firefox-locale-en:amd64 (50.1.0+build2-0ubuntu0.16.04.1, 51.0+build2-0ubuntu0.16.04.1), libpam-systemd:amd64 (229-4ubuntu15, 229-4ubuntu16), systemd:amd64 (229-4ubuntu15, 229-4ubuntu16), mysql-common:amd64 (5.7.16-0ubuntu0.16.04.1, 5.7.17-0ubuntu0.16.04.1), apt-utils:amd64 (1.2.18, 1.2.19), libmysqlclient20:i386 (5.7.16-0ubuntu0.16.04.1, 5.7.17-0ubuntu0.16.04.1), firefox:amd64 (50.1.0+build2-0ubuntu0.16.04.1, 51.0+build2-0ubuntu0.16.04.1), apt-transport-https:amd64 (1.2.18, 1.2.19), linux-tools-common:amd64 (4.4.0-59.80, 4.4.0-62.83) Purge: linux-image-4.4.0-57-lowlatency:amd64 (4.4.0-57.78) End-Date: 2017-01-22 18:10:27 Looking at /var/log/kernel.log (attached fragment) I found a backtrace including the i915 module. Attached is the output from lspci and lshw. Let me know if you need anything else. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-62-lowlatency 4.4.0-62.83 ProcVersionSignature: Ubuntu 4.4.0-62.83-lowlatency 4.4.40 Uname: Linux 4.4.0-62-lowlatency x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC1D0p: luca 2999 F...m pulseaudio /dev/snd/controlC1: luca 2999 F.... pulseaudio /dev/snd/controlC0: luca 2999 F.... pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Thu Jan 26 18:59:53 2017 HibernationDevice: RESUME=UUID=841aac03-34a5-409e-a845-fdb0c6d7284a InstallationDate: Installed on 2015-11-12 (440 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: LENOVO 20DT001TGE ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-62-lowlatency root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-62-lowlatency N/A linux-backports-modules-4.4.0-62-lowlatency N/A linux-firmware 1.157.8 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-12-05 (52 days ago) dmi.bios.date: 08/19/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JDET54WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: Intel powered classmate PC dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrJDET54WW(1.16):bd08/19/2015:svnLENOVO:pn20DT001TGE:pvrThinkPadL450:rvnLENOVO:rnIntelpoweredclassmatePC:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20DT001TGE dmi.product.version: ThinkPad L450 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659621/+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
