I could not reproduce that bug using the live CD for 1 hour. Given that I'm not using unity, given that the bug happens in a way that is very unpredictable (sometimes 2-3 times in a row in 10 minutes, then nothing for several days), this does not mean that this bug is fixed. I'm not even sure that the live CD uses the same driver (intel_drv) which seems responsible for the crash.
That bug happened to me once again 1 hour ago (exact same callstack). Being myself a developer, I can if you indicate me how, install debug symbols for that module (does this exist?) and give you more info. From my experience, a bug like this seems to depend on some unitialized variable which value depends on what's in the graphics memory at the time of use. Is there a way not to use intel_drv? thx for the help -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1472471 Title: XServer crash logs the user off randomly Status in xorg package in Ubuntu: Incomplete Bug description: System: Ubuntu 14.04, running cinnamon, on a Dell M3800. The bug happens randomly and logs off the user, who loses everything in the current session. It happens mostly when a new window is openned, especially terminals (but not only). > cat /proc/version_signature Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11 The same happens with the latest 3.16.0-43 kernel. Here's what I found in the Xorg.0.log.old file: [ 1063.253] (EE) Backtrace: [ 1063.254] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7fe8e43aaed8] [ 1063.254] (EE) 1: /usr/bin/X (0x7fe8e4206000+0x1a8f19) [0x7fe8e43aef19] [ 1063.254] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fe8e2385000+0x36d40) [0x7fe8e23bbd40] [ 1063.254] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x258f9) [0x7fe8de1b08f9] [ 1063.254] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0x26d7c) [0x7fe8de1b1d7c] [ 1063.254] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fe8de18b000+0xf4f4f) [0x7fe8de27ff4f] [ 1063.254] (EE) 6: /usr/bin/X (0x7fe8e4206000+0x1755bd) [0x7fe8e437b5bd] [ 1063.254] (EE) 7: /usr/bin/X (0x7fe8e4206000+0x176397) [0x7fe8e437c397] [ 1063.255] (EE) 8: /usr/bin/X (DRI2GetBuffersWithFormat+0x10) [0x7fe8e437c770] [ 1063.255] (EE) 9: /usr/bin/X (0x7fe8e4206000+0x178499) [0x7fe8e437e499] [ 1063.255] (EE) 10: /usr/bin/X (0x7fe8e4206000+0x5369e) [0x7fe8e425969e] [ 1063.255] (EE) 11: /usr/bin/X (0x7fe8e4206000+0x574ea) [0x7fe8e425d4ea] [ 1063.255] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fe8e23a6ec5] [ 1063.255] (EE) 13: /usr/bin/X (0x7fe8e4206000+0x42a5e) [0x7fe8e4248a5e] [ 1063.255] (EE) [ 1063.255] (EE) Bus error at address 0x7fe890108000 --- ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: csoler 7078 F.... pulseaudio /dev/snd/controlC0: csoler 7078 F.... pulseaudio DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=/dev/mapper/swap InstallationDate: Installed on 2015-06-18 (19 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: Dell Inc. Dell Precision M3800 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-41-generic root=UUID=ed58d38e-680c-4454-863d-9c8e4698082c ro quiet splash ProcVersionSignature: Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.16.0-41-generic N/A linux-backports-modules-3.16.0-41-generic N/A linux-firmware 1.127.12 Tags: trusty Uname: Linux 3.16.0-41-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 01/08/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: Dell Precision M3800 dmi.board.vendor: Dell Inc. dmi.board.version: A09 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA09:bd01/08/2015:svnDellInc.:pnDellPrecisionM3800:pvrA09:rvnDellInc.:rnDellPrecisionM3800:rvrA09:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Dell Precision M3800 dmi.product.version: A09 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1472471/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
