Xorg crashed with SIGSEGV in miPointerSetPosition() from positionSprite() from positionSprite() from fill_pointer_events() from GetPointerEvents() from QueuePointerEvents()

[ubername]

after today's updates

I don't know if this is related but for some time now, possibly since 17.04, I have had a weird situation where I cannot get windows to raise to focus on click so I have had to use sloppy focus.

ProblemType: Crash
DistroRelease: Ubuntu 18.10
Package: xserver-xorg-core 2:1.19.6-1ubuntu4
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.10-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Mon May 14 17:09:45 2018
DistUpgraded: Fresh install
DistroCodename: cosmic
DistroVariant: ubuntu
DkmsStatus:
 rtl8812au, 4.3.8.12175.20140902+dfsg, 4.15.0-19-generic, x86_64: installed
 rtl8812au, 4.3.8.12175.20140902+dfsg, 4.15.0-20-generic, x86_64: installed
 virtualbox, 5.2.12, 4.15.0-20-generic, x86_64: installed
ExecutablePath: /usr/lib/xorg/Xorg
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 Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1028:05a4]
InstallationDate: Installed on 2014-08-13 (1369 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140810)
MachineType: Dell Inc. OptiPlex 9020
ProcCmdline: /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose 3
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=e2d4a833-d4fd-4295-95a5-57c52551e6ba ro splash vt.handoff=1
SegvAnalysis:
 Segfault happened at: 0x55d18c672fe0 <miPointerSetPosition+192>: mov (%rbx),%r15
 PC (0x55d18c672fe0) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%r15" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 miPointerSetPosition ()
 ()
 ()
 GetPointerEvents ()
 QueuePointerEvents ()
Title: Xorg crashed with SIGSEGV in miPointerSetPosition()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sudo
dmi.bios.date: 02/01/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A22
dmi.board.name: 06X1TJ
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA22:bd02/01/2018:svnDellInc.:pnOptiPlex9020:pvr00:rvnDellInc.:rn06X1TJ:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 9020
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.2-2ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.2-2ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Tue Sep 12 12:13:51 2017
xserver.configfile: default
xserver.errors:
 /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
 /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu6
xserver.video_driver: modeset

[Daniel van Vugt (vanvugt)]

Not quite the same issue but see also:
https://errors.ubuntu.com/problem/8eb04b107d22b16cb91cf5c1e44be8e049ff2239
https://errors.ubuntu.com/problem/7e156516466a7ec7b0a7aa687c809732a3860168

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[flo schneider (0penartist)]

It seems like easystroke on ubuntu is still built from 0.6.0 release and not from master.

possibly related bug is also fixed in master:
https://bugs.launchpad.net/ubuntu/+source/easystroke/+bug/1426190

As master is also outdated, you will need to add at least this patch:
https://github.com/thjaeger/easystroke/pull/6

"This fixes a serious bug that can lead to system instability. Without this patch, if a 'Command' action is commonly used, it will lead to so many zombie processes that the OS will be unable to launch additional processes."

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 18.10 (cosmic) reached end-of-life on July 18, 2019.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.