Experiencing same problem, in most cases displays that go into sleep modus (or you turn them off and on again) don't remove themselves from the display driver. But some displays gets removed form the gpu(or xorg, i don't know) display driver and the re-added. So basically this happens when you displays are re-arranging cause you added or removed a display (either manually or automatically by the display itself).
This problem is viewable in multi-monitor setup, where 1 monitor is programmed to detach himself from the gpu when going to sleep or off, and the other(s) are just turning the screen black, but stay connected to the gpu. When you turn off you (problem) display, you actually see linux re-arranging windows/applications on the screen(s) that don't detach themselves from the gpu. Seeing this happen, I came to this conclusion, that some display detach themselves from the gpu when going to sleep, and therefore linux thinks a display is being removed and re-arranges everything. During this re-arrangement process a duplicate cursor is created and becomes frozen, a new cursor is created and becomes your primary cursor that behaves normally. possible fix for this is linux resetting all cursors in xorg/gpu driver when completing such re-arrangement process. I have zero understanding of xorg or gpu driver programming, but i do know that xorg is programmed to be able to have multiple cursors. So my suspicion is with xorg programming. I hope this gets fixed, It's really annoying, when you are working and have tons of apps open, you are required to log out and restart your workspace, which can be a hasle and time consuming. -- 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/1875528 Title: Extra frozen / stuck mouse cursor after auto screen lock / sleep Status in Mutter: Unknown Status in mutter package in Ubuntu: Confirmed Bug description: Expected: After my computer had gone to sleep and I log in I should see only a single active mouse cursor. What happened instead: After my computer had gone to sleep and I logged in I noticed a second frozen/stuck mouse cursor was on screen and was rendered in one place over any active application windows. ==== I recently upgraded to 20.04 from 19.10 but the same issue was occurring in 19.10 as well. Logging out completely then logging back in again removed the extra frozen cursor. ==== lsb_release -rd Description: Ubuntu 20.04 LTS Release: 20.04 apt-cache policy mutter mutter: Installed: 3.36.1-3ubuntu3 Candidate: 3.36.1-3ubuntu3 Version table: *** 3.36.1-3ubuntu3 500 500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: mutter 3.36.1-3ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Apr 27 19:53:03 2020 InstallationDate: Installed on 2019-03-09 (415 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: mutter UpgradeStatus: Upgraded to focal on 2020-04-28 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1875528/+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
