I couldn't figure out why I didn't see the issue in my VM. But additional testing shows the issue in the VM. It depends on which windows are visible. If you close all windows and return to the desktop it always occurs.
Also enabling the 'Magnifier extends outside screen' checkbox also causes the issues. -- 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/1831140 Title: GNOME Magnifier Flickering when using none-full screen modes Status in gnome-shell package in Ubuntu: Incomplete Bug description: When using the GNOME magnifier (Zoom) feature the magnified display flickers when used in any of the following modes: Left, Right, Top or Bottom screen part. This occures when the mouse moves towards the edge directly opossite to the magnified view. To reproduce: * Open GNOME Control Centre. * Go to Universal Access. * Click on Zoom. * Enable Zoom * Selct either Top, Bottom, Left or Right from the screen part drop down list. * Move the mouse cursor to the opossite edge of the screen to that where the magnified view is located. I have tested on multiple systems running Ubuntu 18.04. I am yet to test with 19.04. I use this feature to allow me to use two monitors with one showing a magnified view the other showing a normal view. Happy to provide additional details. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-shell 3.28.3+git20190124-0ubuntu18.04.2 ProcVersionSignature: Ubuntu 4.18.0-21.22~18.04.1-generic 4.18.20 Uname: Linux 4.18.0-21-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu May 30 19:14:43 2019 DisplayManager: gdm3 ExecutablePath: /usr/bin/gnome-shell InstallationDate: Installed on 2019-03-12 (78 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell 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/1831140/+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
