do-partial-upgrade crashed with signal 5 in _XEventsQueued()

[Antonio Contreras]

I'd got this problem when updating Ubuntu 20.10 at Terminal

ProblemType: Crash
DistroRelease: Ubuntu 20.10
Package: ubuntu-release-upgrader-core 1:20.10.11
ProcVersionSignature: Ubuntu 5.8.0-18.19-generic 5.8.4
Uname: Linux 5.8.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu45
Architecture: amd64
AssertionMessage: \305\177
CasperMD5CheckResult: skip
CrashDB: ubuntu
Date: Fri Sep 11 21:58:27 2020
ExecutablePath: /usr/lib/ubuntu-release-upgrader/do-partial-upgrade
InstallationDate: Installed on 2020-09-05 (6 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
InterpreterPath: /usr/bin/python3.8
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/lib/ubuntu-release-upgrader/do-partial-upgrade --frontend=DistUpgradeViewGtk3
ProcEnviron:
 SHELL=/bin/bash
 LANG=es_ES.UTF-8
 PATH=(custom, no user)
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python3.8, Python 3.8.5, python-is-python3, 3.8.2-4
RebootRequiredPkgs: libc6
Signal: 5
SourcePackage: ubuntu-release-upgrader
StacktraceTop:
 ?? () 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
 XPending () from /lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /lib/x86_64-linux-gnu/libgdk-3.so.0
Title: do-partial-upgrade crashed with signal 5 in _XEventsQueued()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
VarLogDistupgradeTermlog:

separator:

[Apport retracing service (apport)]

StacktraceTop:
 XPending (dpy=0x1f728a0) at ../../src/Pending.c:55
 ?? () from /tmp/apport_sandbox_g050xtc5/usr/lib/x86_64-linux-gnu/libgdk-3.so.0.2404.19
 ?? ()

[Apport retracing service (apport)]

StacktraceTop:
 XPending (dpy=0x1f728a0) at ../../src/Pending.c:55
 gdk_event_source_prepare () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libgdk-3.so.0.2404.16
 g_main_context_prepare () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
 g_main_context_iterate.constprop () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0
 g_main_context_pending () from /srv/vms/apport-sandbox-dir/Ubuntu 20.10/amd64/report-sandbox/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6600.0