Xorg crashed with SIGSEGV in GetTouchEvents from QueueTouchEvents

[Jean-Baptiste Lallement]

TEST CASE:
Note: reproduced on a desktop with a touch screen
1. Open gallery-app preloaded with picture
2. Open a picture
3 Switch between picture with touch gestures

ACTUAL RESULT
After switching between pictures back and forth, this crash occurs

This crash also occurs with ubuntu-calculator-app

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3
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
CrashCounter: 1
Date: Wed Apr 23 20:37:50 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation ValleyView Gen7 [8086:0f31] (rev 0a) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0629]
InstallationDate: Installed on 2014-04-22 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. Inspiron 3138
ProcCmdline: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=5cbfbe7d-ae82-4bcf-aa3c-9b23c133ee5b ro quiet splash
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 ?? ()
 ?? () from /usr/lib/xorg/modules/input/evdev_drv.so
 ?? ()
 ?? ()
Title: Xorg crashed with SIGABRT
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 08/30/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0FC0K2
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A06
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd08/30/2013:svnDellInc.:pnInspiron3138:pvr:rvnDellInc.:rn0FC0K2:rvrA00:cvnDellInc.:ct8:cvrA06:
dmi.product.name: Inspiron 3138
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Wed Apr 23 20:38:22 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 16476
 vendor AUO
xserver.version: 2:1.15.1-0ubuntu2

[Apport retracing service (apport)]

StacktraceTop:
 GetTouchEvents (events=0x7f7e7ea6dc20, dev=dev@entry=0x7f7e809e1720, ddx_touchid=<optimized out>, type=<optimized out>, flags=flags@entry=0, mask_in=<optimized out>) at ../../dix/getevents.c:2044
 QueueTouchEvents (device=0x7f7e809e1720, type=<optimized out>, ddx_touchid=<optimized out>, flags=flags@entry=0, mask=<optimized out>) at ../../dix/getevents.c:1876
 xf86PostTouchEvent (dev=<optimized out>, touchid=<optimized out>, type=<optimized out>, flags=flags@entry=0, mask=<optimized out>) at ../../../../hw/xfree86/common/xf86Xinput.c:1469
 EvdevPostQueuedEvents (num_v=0, first_v=0, v=0x7fff9550bb00, pInfo=0x7f7e809d6ae0) at ../../src/evdev.c:997
 EvdevProcessSyncEvent (ev=<optimized out>, pInfo=0x7f7e809d6ae0) at ../../src/evdev.c:1026

[Launchpad Janitor (janitor)]

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

[Alberto Milone (albertomilone)]

I can't reproduce it here if I upgrade qt to the packages available in the canonical-x staging PPA:
https://launchpad.net/~canonical-x/+archive/x-staging

[Random (randext)]

I get this crash almost everyday with random & normal web browsing. Hope to be fixed soon!
System config about the same of OP.

[manolo (manuel-sales)]

It affects me when:
1) I login into Ubuntu (just the anoying crash report)

2) browsing with firefox (usualy when doing a login into a website that has some part of flash); this is specially fustrating because a command line like screen appears and after a seconds appear the login screen (the system has logged me out and I have lost all the programs that I have opened)

I hope this will be solved soon otherwise I'll have to move to other operating system.

[Maarten Lankhorst (mlankhorst)]

Can you retest with -updates enabled? qt has a new version 5.2.1+dfsg-1ubuntu14.2 that should fix your issues.

[Dee (dmusil-x)]

I receive this bug every boot/login time of my ubuntu. Fortunatelly it's not too often. Everything else works, so it's not a terrible problem, just look very bad when someone is watching.
Retyped some error message details:
Ubuntu 14.04, (in reality it is Xubuntu)
amd64,
proc cmdline: /use/bin/X -core : -seat seat -auth /var/run/lightdm/root/: - -novtswitchnolisten tcp vt
Uname: Linux 3.13.0-54-generic x86_64
Some packages reported as "old", updates are on everyday: initscripts, libapparmor, sysv-rc, sysvinit-utils

@manolo: Reporting library allows to ignore future similar bugs by crossing a checkbox, switching to another Os is not necessary

[Basar Qari (qaribasar)]

Retyped some error message details:
Ubuntu 14.04, (in reality it is Xubuntu)
amd64,
proc cmdline: /use/bin/X -core : -seat seat -auth /var/run/lightdm/root/: - -novtswitchnolisten tcp vt
Uname: Linux 3.13.0-54-generic x86_64
Some packages reported as "old", updates are on everyday: initscripts, libapparmor, sysv-rc, sysvinit-utils

[Launchpad Janitor (janitor)]

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

[Launchpad Janitor (janitor)]

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