[Bug 1949775] [NEW] System is unusable (crashes) after screen is turned off and afk system must then be hard rebooted to recover.

[makem]

Public bug reported:

I received a message today about Ubuntu 21.10 having been released and I
upgraded even though I was already using that version.

A large number of packages were installed and a lesser number removed.
The computer then was rebooted and seemed normal except for web pages on
which I was unable to use for example BitWarden password manager web
page icon. This did not respond. It needed the page to be shut down and
restarted.

Later I turned off the monitor and was afk for some while. When I
returned the system did not respond to any mouse clicks and needed a
hard reboot to gain control. This has happened twice prior to this
report.

Before the update the Power manager was set to turn off the screen after
6 minutes. I wondered if having this set and manually turning off the
screen could be a problem. I changed the Power Manager setting to
'never' but the system freeze still occurred after manually turning off
the screen and being afk.

This problem occurred immediately after the distribution upgrade and
nothing in the system had been manually changed.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: ubuntu-release-upgrader-core 1:21.10.8
Uname: Linux 5.13.0-051300-generic x86_64
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Thu Nov  4 12:28:55 2021
InstallationDate: Installed on 2021-07-25 (101 days ago)
InstallationMedia: Xubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to impish on 2021-11-04 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade impish

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https://bugs.launchpad.net/bugs/1949775

Title:
  System is unusable (crashes) after screen is turned off and afk system
  must then be hard rebooted to recover.

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I received a message today about Ubuntu 21.10 having been released and
  I upgraded even though I was already using that version.

  A large number of packages were installed and a lesser number removed.
  The computer then was rebooted and seemed normal except for web pages
  on which I was unable to use for example BitWarden password manager
  web page icon. This did not respond. It needed the page to be shut
  down and restarted.

  Later I turned off the monitor and was afk for some while. When I
  returned the system did not respond to any mouse clicks and needed a
  hard reboot to gain control. This has happened twice prior to this
  report.

  Before the update the Power manager was set to turn off the screen
  after 6 minutes. I wondered if having this set and manually turning
  off the screen could be a problem. I changed the Power Manager setting
  to 'never' but the system freeze still occurred after manually turning
  off the screen and being afk.

  This problem occurred immediately after the distribution upgrade and
  nothing in the system had been manually changed.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: ubuntu-release-upgrader-core 1:21.10.8
  Uname: Linux 5.13.0-051300-generic x86_64
  ApportVersion: 2.20.11-0ubuntu71
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Thu Nov  4 12:28:55 2021
  InstallationDate: Installed on 2021-07-25 (101 days ago)
  InstallationMedia: Xubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: Upgraded to impish on 2021-11-04 (0 days ago)
  VarLogDistupgradeTermlog:

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