Public bug reported:
In some situations an application does not react for some time. If I
click the "close window" button in the window caption in this case
Ubuntu shows some dialog window with some text like:
"The application does not react. Do you want to stop the application?"
and two buttons: "Stop application" and "Wait". (I'm not using the
English variant so I don't know the exact English text.)
The only way to get out of this situation seems to kill the application
using "pkill -KILL application_name".
If I press "Stop application" or "Wait" (it does not matter which of
both buttons I press!) the mouse cursor is still moving but nothing else
on the GUI is working any more.
The only way to get out of this situation is to go to the text console
(e.g. using Ctrl+Alt+F3), log in and kill the X server using "pkill
-KILL Xorg".
Sometimes even a re-boot of the PC is necessary to get the GUI running
again after this situation.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1805782
Title:
X server crashes after alleged application crash
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