Since removing - gnome-shell-extension-multi-monitors - gnome-shell-extension-system-monitor The issue is no more triggering.
Thanks as it resolved my issue. I'm not sure if we can do much more, lets keep it incomplete -- 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/1813248 Title: Hang at screen unlock (gdm / 18.04) Status in gnome-shell package in Ubuntu: Incomplete Bug description: For two days in a row (one would have been a one-off WTF that I don't care to report) my system now hang after unlocking from the UI. I can't see any obvious hanging processes that would be the obvious reason. OVer day I have a few screen locks e.g. when going for lunch, but at least 2/2 times it only appeared when the lock was active over night. I'm not sure it if it the duration or that some job kicks in at night. I have used apport to collect the basics, and will add some more debug data. If you find a lead in there let me know, otherwise assuming I might face this every morning please let me know what to check next time it happens so that we can find the root cause. I found similar bug 1285258 - but other than there I can NOT hit cancel to get a second chance, nothing in the UI moves at all and all I can do is drop to a non UI console with CTRL+ALT+F3 and debug from there. I found that restarting gdm (systemctl restart gdm) gets me logged in, therefore I'll also attach a journal log so that you can look for issues in there. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gdm3 3.28.3-0ubuntu18.04.3 ProcVersionSignature: Ubuntu 4.18.0-13.14~18.04.1-generic 4.18.17 Uname: Linux 4.18.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 Date: Fri Jan 25 06:59:10 2019 InstallationDate: Installed on 2018-10-12 (104 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1813248/+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