Xorg crash

[praepoke]

Xorg crashes randomly since 15.10 upgrade

---
ApportVersion: 2.19.1-0ubuntu4
Architecture: amd64
BootLog:
 fsck from util-linux 2.26.2
 /dev/sda1: clean, 1435509/9519104 files, 28231394/38046976 blocks
 [* ] (1 of 5) A start job is running for Wait for all "auto" /etc/network/interfaces to be up for network-online.target (59s / 2min 9s)
[ OK ] Started Detect the available GPUs and deal with any system changes.
          Starting Light Display Manager...
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
DistUpgraded: 2015-11-06 17:57:17,396 DEBUG enabling apt cron job
DistroCodename: wily
DistroRelease: Ubuntu 15.10
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 5.0.4, 3.19.0-26-generic, x86_64: installed
 virtualbox, 5.0.4, 4.2.0-17-generic, x86_64: installed
 virtualbox, 5.0.4, 4.2.0-18-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:05a4]
MachineType: Dell Inc. OptiPlex 9020
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=6de2e5bd-6327-4991-9810-c6a0f06c2b2e ro splash quiet intel_pstate=enable vt.handoff=7
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Tags: wily ubuntu
Uname: Linux 4.2.0-18-generic x86_64
UpgradeStatus: Upgraded to wily on 2015-11-06 (10 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 08/15/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0PC5F7
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd08/15/2013:svnDellInc.:pnOptiPlex9020:pvr01:rvnDellInc.:rn0PC5F7:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 9020
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
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+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Tue Nov 17 09:42:24 2015
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Video Bus KEYBOARD, id 7
 input Power Button KEYBOARD, id 8
 input Dell Dell QuietKey Keyboard KEYBOARD, id 9
 input USB Optical Mouse MOUSE, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.2-1ubuntu9
xserver.video_driver: intel

[praepoke (x-u6untu-p)]

Xorg.0.log trace :

[ 10997.019] (EE)
[ 10997.019] (EE) Backtrace:
[ 10997.019] (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x559f8f1e562e]
[ 10997.019] (EE) 1: /usr/bin/X (0x559f8f031000+0x1b8999) [0x559f8f1e9999]
[ 10997.019] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f07a6bed000+0x352f0) [0x7f07a6c222f0]
[ 10997.019] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x24f18) [0x7f07a2fe8f18]
[ 10997.019] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x26157) [0x7f07a2fea157]
[ 10997.019] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x2e161) [0x7f07a2ff2161]
[ 10997.019] (EE) 6: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x80335) [0x7f07a3044335]
[ 10997.019] (EE) 7: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x80e2c) [0x7f07a3044e2c]
[ 10997.019] (EE) 8: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x82e1a) [0x7f07a3046e1a]
[ 10997.019] (EE) 9: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x58337) [0x7f07a301c337]
[ 10997.019] (EE) 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x3979f) [0x7f07a2ffd79f]
[ 10997.019] (EE) 11: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f07a2fc4000+0x399a2) [0x7f07a2ffd9a2]
[ 10997.019] (EE) 12: /usr/bin/X (0x559f8f031000+0x13f941) [0x559f8f170941]
[ 10997.019] (EE) 13: /usr/bin/X (0x559f8f031000+0xf48ec) [0x559f8f1258ec]
[ 10997.019] (EE) 14: /usr/bin/X (0x559f8f031000+0xf5ef5) [0x559f8f126ef5]
[ 10997.019] (EE) 15: /usr/bin/X (0x559f8f031000+0x5818f) [0x559f8f08918f]
[ 10997.019] (EE) 16: /usr/bin/X (0x559f8f031000+0x5c34b) [0x559f8f08d34b]
[ 10997.019] (EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7f07a6c0da40]
[ 10997.019] (EE) 18: /usr/bin/X (_start+0x29) [0x559f8f0776c9]
[ 10997.019] (EE)
[ 10997.019] (EE) Segmentation fault at address 0x0
[ 10997.019] (EE)
Fatal server error:
[ 10997.019] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 10997.019] (EE)
[ 10997.019] (EE)
Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
[ 10997.019] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 10997.019] (EE)
[ 10997.019] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 10997.051] (EE) Server terminated with error (1). Closing log file.

[penalvch (penalvch)]

praepoke, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1515718

Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information.

When reporting xorg related bugs in the future, please do so via the above method. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[praepoke (x-u6untu-p)]

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i'm trying to disable SNA to see if it works for me

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[penalvch (penalvch)]

praepoke, as per http://www.dell.com/support/home/us/en/19/product-support/product/optiplex-9020-desktop/drivers/advanced an update to your computer's buggy and outdated BIOS is available (A13). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it address the issue?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

Also, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status New. Otherwise, please mark this as Invalid.

Thank you for your understanding.

[praepoke (x-u6untu-p)]

Hello Christopher,

Thanks for the reply. Unfortunately, i'm not at liberty to update my BIOS :(
On the other hand, doing the workaround found here seems to have solve my issue:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1510970/comments/40

/usr/share/X11/xorg.conf.d$ cat 20-intel.conf

Section "Device"
 Identifier "Card0"
 Driver "Intel"
 Option "AccelMethod" "uxa"
EndSection

[Launchpad Janitor (janitor)]

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