fish-applet assert failure: fish-applet: ../../src/xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.

[Bill (franksmcb)]

Ubuntu MATE 20.04 04122020 iso

Fish applet crashed when opening Preferences after adding it to panel.

ProblemType: Crash
DistroRelease: Ubuntu 20.04
Package: mate-panel 1.24.0-2
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu26
Architecture: amd64
AssertionMessage: fish-applet: ../../src/xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Sun Apr 12 14:59:39 2020
ExecutablePath: /usr/lib/mate-panel/fish-applet
InstallationDate: Installed on 2020-04-12 (0 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Beta amd64 (20200412)
ProcCmdline: /usr/lib/mate-panel/fish-applet
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
Signal: 6
SourcePackage: mate-panel
StacktraceTop:
 __assert_fail_base (fmt=0x7f25044b3588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x7f2504261858 "!xcb_xlib_threads_sequence_lost", file=0x7f25042616c3 "../../src/xcb_io.c", line=260, function=<optimized out>) at assert.c:92
 __GI___assert_fail (assertion=0x7f2504261858 "!xcb_xlib_threads_sequence_lost", file=0x7f25042616c3 "../../src/xcb_io.c", line=260, function=0x7f2504261b10 "poll_for_event") at assert.c:101
 ?? () from /lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /lib/x86_64-linux-gnu/libX11.so.6
 _XEventsQueued () from /lib/x86_64-linux-gnu/libX11.so.6
Title: fish-applet assert failure: fish-applet: ../../src/xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0x7f25044b3588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x7f2504261858 "!xcb_xlib_threads_sequence_lost", file=0x7f25042616c3 "../../src/xcb_io.c", line=260, function=<optimized out>) at assert.c:92
 __GI___assert_fail (assertion=assertion@entry=0x7f2504261858 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7f25042616c3 "../../src/xcb_io.c", line=line@entry=260, function=function@entry=0x7f2504261b10 <__PRETTY_FUNCTION__.14999> "poll_for_event") at assert.c:101
 poll_for_event (dpy=dpy@entry=0x55e3dea433d0, queued_only=queued_only@entry=0) at ../../src/xcb_io.c:260
 poll_for_response (dpy=dpy@entry=0x55e3dea433d0) at ../../src/xcb_io.c:278
 _XEventsQueued (mode=1, dpy=0x55e3dea433d0) at ../../src/xcb_io.c:362

[Martin Wimpress  (flexiondotorg)]

I can not reproduce this issue in Ubuntu MATE 22.04

[Launchpad Janitor (janitor)]

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