I have the same problem. See the attached syslog. The x-server almost crashes,
and if I wait for a long time I might manage to get back to the login screen.
The problem seems to occur mainly in my case when using the Google
Chrome browswer.
I have an Nvidia card using KMS and Nouveau, and my network connection
is via WiFi.
I can confirm the problem is distro-inpependent, I use Gentoo Linux.
** Attachment added: "Syslog"
https://bugs.launchpad.net/ubuntu/+source/libx11/+bug/1636564/+attachment/4900387/+files/syslog.txt
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to libx11 in Ubuntu.
https://bugs.launchpad.net/bugs/1636564
Title:
Segfault from libX11.so.6.3.0
Status in libx11 package in Ubuntu:
Confirmed
Bug description:
Something went wrong with my Ubuntu 16.04 LTS desktop today. When I
got back to the system Mattermost and a Chrome were indicating that
the network was not working. I started to look about and it seemed
that my main ethernet network connection had lost its IPv4 address
somehow. ifconfig and the GUI network manager confirmed this.
To try and resolve this I physically removed the connector and the
plugged it back in. Shortly after I did this my GUI seemed to die out
and I ended up back at the login screen.
Once everything had calmed down I logged back in. After some digging
about in the logs I noticed the following in /var/log/kern.log
Oct 25 13:01:09 thorne-ul-dt kernel: [694321.877561] Mattermost[744]:
segfault at 968 ip 7f8a9e257643 sp 7ffe72a3b510 error 4 in
libX11.so.6.3.0[7f8a9e22f000+135000]
Oct 25 13:01:09 thorne-ul-dt kernel: [694322.029362] chrome[745]: segfault at
968 ip 7fd4b5c73643 sp 7fff94f78d90 error 4 in
libX11.so.6.3.0[7fd4b5c4b000+135000]
That seemed to be the correct time for the problem I noticed. What
exactly caused it I am not sure.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libx11-6 2:1.6.3-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21
Uname: Linux 4.4.0-42-generic x86_64
.tmp.unity_support_test.0:
ApportVersion: 2.20.1-0ubuntu2.1
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
CurrentDesktop: Unity
Date: Tue Oct 25 17:07:28 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller])
Subsystem: Gigabyte Technology Co., Ltd Xeon E3-1200 v3/4th Gen Core
Processor Integrated Graphics Controller [1458:d000]
InstallationDate: Installed on 2015-03-12 (592 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
(20150218.1)
MachineType: Gigabyte Technology Co., Ltd. H81M-DS2V
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-38-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash crashkernel=384M-:128M
vt.handoff=7
SourcePackage: libx11
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/11/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F6
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81M-DS2V
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF6:bd08/11/2015:svnGigabyteTechnologyCo.,Ltd.:pnH81M-DS2V:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-DS2V:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: H81M-DS2V
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20160325-1ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.12-1build2
xserver.bootTime: Tue Oct 25 13:01:04 2016
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id
