gnome-shell assert failure: gnome-shell: ../src/evdev-mt-touchpad.c:1541: tp_detect_thumb_while_moving: Assertion failed: "first"

[RussianNeuroMancer]

https://gitlab.freedesktop.org/libinput/libinput/issues/170

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Gnome Shell Wayland session crash twice while Logitech Touchpad T650 was used for scrolling.

ProblemType: Crash
DistroRelease: Ubuntu 18.10
Package: gnome-shell 3.30.0-1ubuntu2
Uname: Linux 4.18.3-041803-generic x86_64
ApportVersion: 2.20.10-0ubuntu9
Architecture: amd64
AssertionMessage: gnome-shell: ../src/evdev-mt-touchpad.c:1541: tp_detect_thumb_while_moving: Проверочное утверждение «first» не выполнено.
CurrentDesktop: GNOME
Date: Fri Sep 14 20:23:37 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2018-04-20 (147 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: gnome-shell
StacktraceTop:
 __assert_fail_base (fmt=0x7f6078627622 <error: Cannot access memory at address 0x7f6078627622>, assertion=0x7f6080918903 "first", file=0x7f60809187c4 "../src/evdev-mt-touchpad.c", line=1541, function=<optimized out>) at assert.c:92
 __GI___assert_fail (assertion=0x7f6080918903 "first", file=0x7f60809187c4 "../src/evdev-mt-touchpad.c", line=1541, function=0x7f60809191a0 "tp_detect_thumb_while_moving") at assert.c:101
 ?? () from /usr/lib/x86_64-linux-gnu/libinput.so.10
 ?? () from /usr/lib/x86_64-linux-gnu/libinput.so.10
 ?? () from /usr/lib/x86_64-linux-gnu/libinput.so.10
Title: gnome-shell assert failure: gnome-shell: ../src/evdev-mt-touchpad.c:1541: tp_detect_thumb_while_moving: Проверочное утверждение «first» не выполнено.
UpgradeStatus: Upgraded to cosmic on 2018-04-20 (147 days ago)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo tty

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0x7f6078627622 <error: Cannot access memory at address 0x7f6078627622>, assertion=0x7f6080918903 "first", file=0x7f60809187c4 "../src/evdev-mt-touchpad.c", line=1541, function=<optimized out>) at assert.c:92
 __GI___assert_fail (assertion=assertion@entry=0x7f6080918903 "first", file=file@entry=0x7f60809187c4 "../src/evdev-mt-touchpad.c", line=line@entry=1541, function=function@entry=0x7f60809191a0 <__PRETTY_FUNCTION__.12316> "tp_detect_thumb_while_moving") at assert.c:101
 tp_detect_thumb_while_moving (tp=<optimized out>) at ../src/evdev-mt-touchpad.c:1541
 tp_process_state (time=1461748714, tp=0x561162eb6e10) at ../src/evdev-mt-touchpad.c:1792
 tp_handle_state (tp=0x561162eb6e10, time=time@entry=1461748714) at ../src/evdev-mt-touchpad.c:1876

[Daniel van Vugt (vanvugt)]

Can you please report the crash to the libinput developers here?

https://gitlab.freedesktop.org/libinput/libinput/issues

and then tell us the new bug ID.

[RussianNeuroMancer (russianneuromancer)]

Daniel, sure, but which one stacktrace I should upload to libinput developers? Should I link back to this bugreport? If yes, then how to make this bugreport public?

[Launchpad Janitor (janitor)]

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

[RussianNeuroMancer (russianneuromancer)]

Bug reported upstream: https://gitlab.freedesktop.org/libinput/libinput/issues/170

[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.