I occasionally see this on two separate 18.04 installations using Xorg sessions. The time to unlock varies from a couple of seconds to several minutes. Everything other than unlocking the screen feels to work at a normal speed.
I can reliably reproduce this issue (cause screen unlocking to take several minutes) by reading files from my Android 8 phone over USB (phone in "Use USB to transfer files" mode; Ubuntu directory /run/user/1000/gvfs/mtp:host...). (Probably not related, but this file transfer seems extremely slow.) See also: https://askubuntu.com/questions/1038723 (5 people experiencing this issue; no solution) Possibly related: https://askubuntu.com/questions/993984 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1774188 Title: Unlocking the screen takes 5 seconds in Xorg sessions (not so much in Wayland sessions) Status in gdm3 package in Ubuntu: Confirmed Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Status in xorg-server package in Ubuntu: Confirmed Bug description: This is a fresh installation of 18.04. After entering the password and pressing enter, it takes 5 seconds for the lock screen to disappear. This problem didn't happen on the same machine with 16.04 or 14.04. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gdm3 3.28.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17 Uname: Linux 4.15.0-22-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed May 30 15:31:48 2018 InstallationDate: Installed on 2018-05-04 (25 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1774188/+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
