Tapping the top bar with the touchscreen crashes GNOME on Xorg

[Connor Nolan]

Tap the current time = Immediate crash.

Tap the wifi/power combo menu = Immediate crash.

Tap the top bar by itself = Immediate crash.

Tap the activities button = No crash?

Having the GNOME shell completely crash immediately after touching the top bar is really annoying. Especially since a lot of the functionality in the top bar is pretty important.

This was previously reported as https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2018160, but that got closed because of inactivity.

This is the crash report Ubuntu generated: https://errors.ubuntu.com/oops/413de504-30f9-11ee-b2c2-fa163e55efd0.

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: gnome-shell 44.3-0ubuntu1
ProcVersionSignature: Ubuntu 6.2.0-26.26-generic 6.2.13
Uname: Linux 6.2.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Aug 2 15:15:24 2023
DisplayManager: gdm3
InstallationDate: Installed on 2023-08-02 (0 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 44.3-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

From the log the error is this one:

Received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
(Details: serial 4347 error_code 2 request_code 131 (XInputExtension) minor_code 53)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the MUTTER_SYNC environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the meta_x_error() function.)

[Daniel van Vugt (vanvugt)]

Seems like a similar fix to bug 2014986 will be required. But this time it's minor_code 53 which seems to be:

  #define X_XIAllowEvents 53

[Daniel van Vugt (vanvugt)]

Fix proposed: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3146

[Daniel van Vugt (vanvugt)]

Looks like jammy also needs fixing in theory (it's the same code in mutter 42), but in practice I can't get it to crash on jammy.

[Brian Murray (brian-murray)]

Ubuntu 23.04 (Lunar Lobster) has reached end of life, so this bug will not be fixed for that specific release.