Bug 365650

Summary: After unplug external screens, windows do not come back to current screen
Product: [Plasma] kwin Reporter: Guo Yunhe <i>
Component: xrandrAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal    
Priority: NOR    
Version First Reported In: 5.5.5   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Guo Yunhe 2016-07-14 08:05:23 UTC 
This problem related to laptop resume & multiple-screen.

When laptop is in resume state, and user unplug cables of external screen, KDE will not move the window from external screen to laptop screen after resume system. This cause users cannot use the window anymore. They cannot move the window through "move to screen" menu, because here is only one screen now. They can only close the window. But what if you have some important data that didn't save in that application?

Reproducible: Always

Steps to Reproduce:
1. Connect laptop with a second screen with HDMI or VGA.
2. Move a window to second screen.
3. Close laptop so it is in sleep mode.
4. Disconnect the second screen by unplug HDMI or VGA cables.
5. Resume laptop.
6. Open the window that you moved into the second screen.

Actual Results:  
After resume laptop, the window in the second screen will not come back to current laptop screen automatically.

Expected Results:  
All windows should be forcely returned to current screen.
Comment 1 Thomas Lübking 2016-07-14 08:10:27 UTC 
please dump and attach the output of "xrandr -q" in the troublesome single-screen situation (ie. after unplug/resume/windows lost)
Comment 2 Martin Flöser 2016-08-27 15:22:16 UTC 
Please provide the information asked in comment #1 - without we cannot further investigate.
Comment 3 Guo Yunhe 2016-10-18 10:30:10 UTC 
Cannot reproduce this anymore since KDE was updated to 5.8.0. Should be an invalid or fixed issue.