[xmir] X seems to be dumping core on system shutdown

[James Tait]

I haven't actually seen X crash while I'm using it - but whenever I shutdown my laptop, when I restart and try to apply the latest updates, etckeeper tells me there's a large core file in /etc/X11/core. This is reliably reproducible, and the timestamp of the core file tells me it's happening around shutdown, not startup.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xserver-xorg 1:7.7+1ubuntu5
ProcVersionSignature: Ubuntu 3.11.0-8.15-generic 3.11.1
Uname: Linux 3.11.0-8-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.12.5-0ubuntu1
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
Date: Fri Sep 27 12:11:06 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:0655]
InstallationDate: Installed on 2013-09-11 (15 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130910)
MachineType: System76, Inc. Gazelle Professional
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-8-generic root=UUID=ac278fc9-f160-4f3b-a9d4-d5c5f3b70bd8 ro quiet splash acpi_backlight=vendor vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/15/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.00.05RS76
dmi.board.asset.tag: Tag 12345
dmi.board.name: Gazelle Professional
dmi.board.vendor: System76, Inc.
dmi.board.version: gazp9
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: gazp9
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.00.05RS76:bd08/15/2013:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp9:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp9:cvnSystem76,Inc.:ct9:cvrgazp9:
dmi.product.name: Gazelle Professional
dmi.product.version: gazp9
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.10+13.10.20130920-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu9
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Fri Sep 27 09:33:15 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs: Output DP-0 HDMI-0 VGA-0
xserver.version: 2:1.14.2.901-2ubuntu6
xserver.video_driver: intel

[Daniel van Vugt (vanvugt)]

The problem is probably XMir. Unfortunately we can't progress without a readable stack trace of the crash.

[James Tait (jamestait)]

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On Mon 30 Sep 2013 03:16:49 BST, Daniel van Vugt wrote:
> The problem is probably XMir. Unfortunately we can't progress without a
> readable stack trace of the crash.
>

Right. But which debug packages do I need to install to get that? I
already have xserver-xorg-core-dbg and xserver-xorg-video-intel-dbg and
I don't see a xserver-xorg-xmir-dbg package.
- --
James Tait, BSc. | https://launchpad.net/~jamestait/
Software Engineer, Canonical Online Services, Web and Ops Team
Ubuntu - Linux for human beings | www.ubuntu.com
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[Daniel van Vugt (vanvugt)]

Like many Ubuntu packages, Mir does not have separate dbg packages.

But you can get debug symbols for any package (in theory) using ddebs.ubuntu.com:
https://wiki.ubuntu.com/DebuggingProgramCrash#Debug_Symbol_Packages

It's not pretty though.

[Launchpad Janitor (janitor)]

[Expired for XMir because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]