My desktop session crashes sporadically. Often this happens when I leave the computer and the screensaver starts (Euphoria GL screensaver). This bug is not reproducible on demand.
Attached is my Xorg log file which seems to indicate that this problem is related to the i915 driver code.
---
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: kwin
DistUpgraded: 2016-06-15 15:16:54,383 DEBUG enabling apt cron job
DistroCodename: trusty
DistroRelease: Ubuntu 14.04
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: No
GraphicsCard:
Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:5036]
InstallationDate: Installed on 2016-05-26 (59 days ago)
InstallationMedia: Kubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
LightdmGreeterLog:
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
Bus::open: Can not get ibus-daemon's address.
IBusInputContext::createInputContext: no connection to ibus-daemon
file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession
LightdmGreeterLogOld:
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
Bus::open: Can not get ibus-daemon's address.
IBusInputContext::createInputContext: no connection to ibus-daemon
file:///usr/share/kde4/apps/lightdm-kde-greeter/themes/userbar/main.qml:135: Unable to assign [undefined] to QString usersession
MachineType: LENOVO 20BWS18900
Package: xorg 1:7.7+1ubuntu8.1
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.6.3-040603-generic root=UUID=285091fd-ac1a-4801-8055-c356ab9083a5 ro quiet splash vt.handoff=7
Tags: trusty ubuntu
Uname: Linux 4.6.3-040603-generic x86_64
UpgradeStatus: Upgraded to trusty on 2016-06-15 (39 days ago)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 03/02/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET46WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BWS18900
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJBET46WW(1.11):bd03/02/2015:svnLENOVO:pn20BWS18900:pvrThinkPadT450s:rvnLENOVO:rn20BWS18900:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BWS18900
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
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: Mon Jul 25 09:49:33 2016
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 1133
vendor LGD
xserver.version: 2:1.17.2-1ubuntu9.1~trusty1
The crash just happened again... this time it looks like it was related to fullscreening a video on facebook.
I should probably also mention that I have a dual screen setup.