Daniel, on Feb 2 I have changed to "Ubuntu on Wayland" at login as you suggested and up till now I have had no issues with freezing.
But yesterday after few months I needed to record my screen and found out that SimpleScreenRecorder program does not capture video if wayland is used, so I switched back to X session selecting "Ubuntu" session at login recorded screen. Today I have just forgotten to changed back to wayland. And the result? Today using X session and Ubuntu freezed and the only way to get it back was hard reset. So your theory of my problem being related to "X session" on my laptop may have some true in it. I just wanted to inform you about this. I am switching back to wayland now. ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1903986 Title: Ubuntu 20.04 freezes with remmina in full-screen Status in gnome-shell package in Ubuntu: New Bug description: On Ubuntu 20.04 using Remmina accessing remote Windows session to my work and everything was working fine for 5 hours and then suddenly Reminna freezes. Mouse pointer still working fine, but Remmina not responding and also keyboard not responding (maybe because all of the keys are controller by Remmina). This problem is now third time the problem appeared: - bug 1902051 - bug 1903710 with no response. :( Work-around: hard press power button to power off laptop and power on it. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: remmina 1.4.2+dfsg-1ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65 Uname: Linux 5.4.0-52-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.11 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu Nov 12 12:38:25 2020 InstallationDate: Installed on 2019-10-23 (386 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) SourcePackage: remmina UpgradeStatus: Upgraded to focal on 2020-08-14 (89 days ago) modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2020-04-29T17:08:03.553351 --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.12 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2019-10-23 (392 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) Package: gnome-shell 3.36.4-1ubuntu1~20.04.2 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65 RelatedPackageVersions: mutter-common 3.36.6-1ubuntu0.20.04.2 Tags: focal Uname: Linux 5.4.0-54-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-08-14 (95 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo wireshark _MarkForUpload: True modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2020-04-29T17:08:03.553351 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1903986/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp