Just to add on to my last comment... something is really broken for my configuration - after ten minutes of trying to get all three monitors to wake up and play ball with the screen display settings windows and it only ever enabling two out of the three (sometimes 1 & 3, sometimes 1 & 2 and somethings 2 & 3), I gave up and rebooted.... and now it's fine.
Think will just have to disable the monitors from sleeping when the screen is locked... Happy to investigate if given direction on what to look at on my system. -- 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/1927948 Title: Windows switch monitor after resuming from sleep Status in GNOME Shell: Unknown Status in Mutter: Unknown Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Bug description: What I expect: Window layout/positioning is identical after resume from sleep. What I observe: After resume from sleep, windows appear on a different monitor than before. I found this possibly relevant GNOME bug: https://gitlab.gnome.org/GNOME/mutter/-/issues/1419 ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: mutter 3.38.4-1ubuntu2 ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12 Uname: Linux 5.11.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu65 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon May 10 13:40:28 2021 InstallationDate: Installed on 2019-12-02 (524 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) SourcePackage: mutter UpgradeStatus: Upgraded to hirsute on 2021-05-05 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1927948/+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