How to close an application window that is not responding?

Qubes-Whonix
1

I have installed SimpleX Desktop messenger in a kicksecure App Template. Then I created an AppVM based off of that kicksecure app. When I open the program SimpleX in the AppVM, it seems to work, up until you ask SimpleX to show you a QR Code for your messenger address. Once that QR code window pops up, it becomes non-responsive. The “X” button in the top right cornder of the window doesnt close it, and infact, does nothing. Every way to close this window/app using the GUI doesn’t work.

I need help closing this window/AppVM program without rebooting my qubes/whonix installation.

Thanks

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2

Open Qubes Manager, right-click the unresponsive AppVM’s name on the list, then select Kill/Quit/Shutdown or similar from the dropdown menu. You can also open a Terminal from the dropdown menu and provide a command to kill the unresponsive process as well.

3

Unspecific to Whonix:

Can be resolved as per:

Any tool compatible with Debian can be used for this purpose.

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