Public bug reported:
The System Program Problem Detected popup apparently causes system to hang.
You can't switch to a terminal.
You can't move a window.
You can't interact within windows.
Ctrl-alt-del took more than a minute to respond and then you have 30 seconds to
answer cancel during which the system is also non-responsive.
This is not the only popup that causes this. The Program Not
Responding Wait or Force Quit dialog has the same effect. It was
disabled entirely. Ctrl-alt-del cancel method sometimes worked for
that one.
Appears to be related to grabbing mouse pointer.
xwininfo said it could not grab mouse pointer (probably because apport already
grabbed it).
Actual dialog box was burried.
Window had no title bar, it was hidden under top bar (top bar set to autohide).
Showed "update-notifier" as program name. Was able to quit from the pulldown
menu on top bar. After which, system became usable again.
Data was almost lost in seamonkey composer because of the difficulty
saving. I was using firefox at the time of the problem. Although
firefox's memory utilization had been quite high, I had killed tabs and
its memory usage was under 2GB.
ps ...
1000 23538 23533 20 0 568668 149984 futex_ Sl pts/0 0:14
/usr/bin/python3 /usr/share/apport/apport-gtk update-notifier
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.4 LTS
Release: 18.04
Codename: bionic
dpkg -l python3
ii python3 3.6.7-1~18.0 amd64 interactive high-level object-ori
dpkg -l | fgrep -i python3 | fgrep -i gtk
ii python3-aptdaemon.gtk3widgets
1.1.1+bzr982-0ubuntu19.2 all Python 3 GTK+ 3
widgets to run an aptdaemon client
ii python3-gtkspellcheck 4.0.5-1
all Python 3 spellchecking
library for GTK+ based on Enchant
dpkg -l |fgrep -i python | wc
818 9135 147661
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: update-notifier 3.192.1.7
ProcVersionSignature: Ubuntu 5.3.0-51.44~18.04.2-generic 5.3.18
Uname: Linux 5.3.0-51-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri May 8 20:20:07 2020
InstallationDate: Installed on 2019-05-02 (372 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: update-notifier
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: update-notifier (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1877695
Title:
Hangs system: System Program Problem Detected
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