gnome-shell crashes when using touchscreen

[Ivan Matyunin]

The crash isn't immediate, but reliably reproducible when using the touchscreen to interact with multiple full-screen native steam games. Typically happens within 30-120 minutes of normal use. (Same games don't crash at all if the touchscreen is not used.) I've reproduced the issue many times. Also seems to affect other full-screen applications such as the default video player (reproduced once).

Typically right before the crash the reaction to touch input will become somewhat strange (touches seem to register, but the full-screen application doesn't respond as expected, for example moving the cursor but not actually performing the "tap" action).

# lsb_release -rd
Description: Ubuntu 19.10
Release: 19.10

# apt-cache policy gnome-shell
gnome-shell:
  Installed: 3.34.1+git20191024-1ubuntu1~19.10.1
  Candidate: 3.34.1+git20191024-1ubuntu1~19.10.1
  Version table:
 *** 3.34.1+git20191024-1ubuntu1~19.10.1 500
        500 http://archive.ubuntu.com/ubuntu eoan-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.34.1-1ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu eoan/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnome-shell 3.34.1+git20191024-1ubuntu1~19.10.1
ProcVersionSignature: Ubuntu 5.3.0-26.28-generic 5.3.13
Uname: Linux 5.3.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 26 12:36:19 2020
DisplayManager: gdm3
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.34.1+git20191107-1ubuntu1~19.10.1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.apport.crashdb.conf: 2020-01-25T22:33:07.611081

[Daniel van Vugt (vanvugt)]

Your log is showing errors in some gnome-shell extensions. Please start by UNINSTALLING all of these:

'<email address hidden>'
'<email address hidden>'
'<email address hidden>'

Then reboot. If the problem continues then next please follow these instructions:

https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment

[Ivan Matyunin (sibrus-gmail)]

Thanks for the guidance, Daniel

I have uninstalled the extensions, rebooted, and was still able to reproduce the crash. I have uploaded the .crash file per the instructions you linked.

Please let me know if there's anything else I can do to aid in the investigation.

[Daniel van Vugt (vanvugt)]

Thanks, but those instructions also say:

> Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.

I have looked inside your crash file and this is certainly true. So please run:

  ubuntu-bug /path/to/your/file.crash

[Ivan Matyunin (sibrus-gmail)]

ubuntu-bug is telling me some packages were not the newest versions, I'm trying to reproduce again after upgrading my packages

[Ivan Matyunin (sibrus-gmail)]

I reproduced the issue again, and sent the info per the instructions, it is here: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1861542

Sorry about not reading the instructions properly the first time, and thanks for your patience :)

[Daniel van Vugt (vanvugt)]

Thanks!