I have reproduced the crash while attached in gdb. Here is a backtrace. ** Attachment added: "gdb backtrace" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1500144/+attachment/4513674/+files/gdb-Xorg.txt
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1500144 Title: Xorg crashed with SIGSEGV Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: Crashes might be related to full screen video. Crashes when exiting fullscreen or switching windows. ProblemType: Crash DistroRelease: Ubuntu 15.10 Package: xserver-xorg-core 2:1.17.2-1ubuntu7 ProcVersionSignature: Ubuntu 4.2.0-11.13-generic 4.2.1 Uname: Linux 4.2.0-11-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19-0ubuntu1 Architecture: amd64 BootLog: Scanning for Btrfs filesystems fsck from util-linux 2.26.2 tito-root: clean, 2076967/15114240 files, 50801586/60448000 blocks CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Sat Sep 26 23:54:31 2015 DistUpgraded: 2015-07-22 01:05:44,405 DEBUG enabling apt cron job DistroCodename: wily DistroVariant: ubuntu DkmsStatus: acpi-call, 1.1.0, 4.2.0-11-generic, x86_64: installed virtualbox, 5.0.4, 4.2.0-11-generic, x86_64: installed ExecutablePath: /usr/bin/Xorg GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:060a] InstallationDate: Installed on 2014-08-08 (414 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. XPS13 9333 ProcCmdline: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-11-generic root=UUID=8a50e235-2691-4a4a-b587-3bb79f18c59c ro splash quiet i915.enable_psr=1 vt.handoff=7 SegvAnalysis: Segfault happened at: 0x7fe56794acf9: cmpb $0x48,(%rax) PC (0x7fe56794acf9) ok source "$0x48" ok destination "(%rax)" (0x000023f2) not located in a known VMA region (needed writable region)! SegvReason: writing NULL VMA Signal: 11 SourcePackage: xorg-server StacktraceTop: ?? () ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so Title: Xorg crashed with SIGSEGV UpgradeStatus: Upgraded to wily on 2015-07-22 (66 days ago) UserGroups: dmi.bios.date: 03/27/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 0D13CR dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA07:bd03/27/2015:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0D13CR:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: XPS13 9333 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+15.10.20150908-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.0-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.0-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Sat Sep 26 23:54:36 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4933 vendor CMN xserver.version: 2:1.17.2-1ubuntu7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1500144/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp