Public bug reported:

The computer stops and restarts the screen and after about 2 secs the display 
works normally in maybe 30 secs . The proces repeats for several minutes (maybe 
24 mins) and then suddenly everything works normally.
If I go into some serous work like this report I am able to do that without 
disturbance.
If I go back to no working apps the operation continues with on/off working.

My system is the latest 20.04 software upgrade from the Beta-version.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.20
ProcVersionSignature: Ubuntu 5.4.0-41.45-generic 5.4.44
Uname: Linux 5.4.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul  6 22:52:53 2020
InstallationDate: Installed on 2019-10-20 (260 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeAptclonesystemstate.tar.gz:
 Error: command ['pkexec', 'cat', 
'/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 
127: Error executing command as another user: Not authorized
 
 This incident has been reported.
VarLogDistupgradeAptlog:
 Log time: 2020-06-25 21:27:41.194955
 Starting pkgProblemResolver with broken count: 0
 Starting 2 pkgProblemResolver with broken count: 0
 Done
 None

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


** Tags: amd64 apport-bug dist-upgrade focal package-from-proposed

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https://bugs.launchpad.net/bugs/1886585

Title:
  Restarting display / screen

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