Public bug reported: The release is 20.04. The gnome-session version is 3.36.0-2ubuntu1.
What is expected: 1. When either monitor is turned off, the monitor that is still on becomes the only monitor. 2. The mouse should work. What happens: 1. When the primary monitor is turned off only, the space is not updated. 2. When the non-primary monitor is turned off only, the mouse is frozen. This is https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1709159 Long version: I have two identical monitors hooked up on HDMI. Let's call them #1 and #2, with #1 left of #2. #1 is primary. Case 1: Turn off #1 (the primary), leaving #2 on: The display has not been updated to detect the turned off monitor. The mouse can move around on #2, including going to the #1 space even though #1 is turned off. When #1 is turned back on, everything works fine too. Case 2: Turn off #2 (the non-primary) leaving #1 on: The display *has* been updated to detect the turned off monitor. The mouse cannot move at all, even though the cursor is visible on #1. This is When #2 is turned back on, there is another display update (another flicker, plus a Pulseaudio notification of new sink detected since the monitor has built-in speakers). Other notes: My card is AMD RX480. Another user in https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1709159 is also using AMDGPU. ** Affects: gnome-session (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1877577 Title: Multi-monitor not behaving correctly when one display turned off Status in gnome-session package in Ubuntu: New Bug description: The release is 20.04. The gnome-session version is 3.36.0-2ubuntu1. What is expected: 1. When either monitor is turned off, the monitor that is still on becomes the only monitor. 2. The mouse should work. What happens: 1. When the primary monitor is turned off only, the space is not updated. 2. When the non-primary monitor is turned off only, the mouse is frozen. This is https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1709159 Long version: I have two identical monitors hooked up on HDMI. Let's call them #1 and #2, with #1 left of #2. #1 is primary. Case 1: Turn off #1 (the primary), leaving #2 on: The display has not been updated to detect the turned off monitor. The mouse can move around on #2, including going to the #1 space even though #1 is turned off. When #1 is turned back on, everything works fine too. Case 2: Turn off #2 (the non-primary) leaving #1 on: The display *has* been updated to detect the turned off monitor. The mouse cannot move at all, even though the cursor is visible on #1. This is When #2 is turned back on, there is another display update (another flicker, plus a Pulseaudio notification of new sink detected since the monitor has built-in speakers). Other notes: My card is AMD RX480. Another user in https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1709159 is also using AMDGPU. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1877577/+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
