I gave flatpak a try today. Audacity was one of the apps I tried to use, but it has locked up and I can’t use kill from the command line because Audacity is not a regularly installed app.
Looking online “flatpak kill” can kill a flatpak-installed application and Flatpak’s website explicitly lists “kill” as being an option for the flatpak command but flatpak --help does not list “kill” as a valid option
Restarting is the only way I can see to kill it, but it would be nice not to have to reboot when flatpak apps fail.
Thanks for confirming what ought to be there, but the install was done with Flatpak’s PPA per the instructions on their website, which is why I’m baffled, when the site clearly shows a “flatpak kill” command/option.
Only hting I can think is to uninstall/reinstall Flatpak and see what happens.
“With older Ubuntu versions, the official Flatpak PPA is the recommended way to install Flatpak …”
It seems your PPA wasn’t correctly setup. I’m not using a Debian based distribution, therefore I can’t help with any specifics. But it seems you can check the packages with apt show flatpak or apt-cache show flatpak. This should indicate which version gets installed from which repository.