16.04: Unity unexpectedly moves windows to different workspace windows when using extended display

Bug #1649476 reported by Larry Michel
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
unity (Ubuntu)
New
Undecided
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Bug Description

I have been using a monitor to extend the display on my laptop since Trusty. It is connected through HDMI cable to my laptop, then I extend the display instead of mirroring.

Strange things started happening after I switched to Xenial. After my screen gets locked automatically and I unlock it, I will find my windows moved around workspace windows.

If I disable workspaces, then I will have windows disappear. I then have to re-enable workspaces in order to find that they were moved to a virtual workspace window.

This is exacerbated when I try to access a window by clicking on an application in the side bar and I am taken to workspace windows that I am not familiar with. Trying to get back to previous windows then becomes a search activity.

I want to disable workspaces but I can't since I have to use the extended display.

Larry Michel (lmic)
summary: - 16.04: Unity moves windows to different workspaces when using multiple
- monitors
+ 16.04: Unity unexpectedly moves windows to different workspace windows
+ when using extended display
Revision history for this message
Michael Hohnbaum (hohnbaum) wrote :

I have experienced the same behavior. When I enabled xscreensaver on the system, the problem stopped. If I disable xscreensaver, then applications move randomly when the system locks. Was a PITA until I realized the xscreensaver workaround.

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