Bug 390116

Summary: Slow Window Drag Causes Transparent Window And Locks GUI
Product: [Plasma] kwin Reporter: vindicator <nroycea+kde>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: normal    
Priority: NOR    
Version: 5.11.5   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:

Description vindicator 2018-02-09 00:02:11 UTC 
It's a little tough to describe the issue, but it goes something like this:
There are times when my system may be crushed (lots of i/o) and I try to drag a window and it's a little slow to start to drag.

The window becomes transparent as expected, but I don't know if I lose my mouse hold or what, but the dragged window remains transparent (like it's still held) and I can't click on anything else.

The GUI is NOT frozen or hung, but the mouse clicking actions are ignored.
I'm not sure if all keys are locked as well. I could use CTRL-Shift-ESC, but don't remember if I could arrow-key/tab through things.

Maybe poll to see if the mouse is still being pressed on a drag.
Comment 1 Martin Flöser 2018-02-09 18:54:46 UTC 
There's not much we can do. What you describe sounds more like a problem in the x server.