You are correct, it was set to 'security updates only.' After changing to 'All updates' and updating, I was able to install librtaudio-dev finally and some related dependencies were updated with that operation (pulse things). I think my issue is solved! :)
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/2024948 Title: librtaudio-dev has unresolvable dependencies on 22.04.2. Status in pulseaudio package in Ubuntu: Incomplete Bug description: sudo apt install librtaudio-dev Reading package lists... Done Building dependency tree... Done Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libpulse-dev : Depends: libpulse0 (= 1:15.99.1+dfsg1-1ubuntu1) but 1:15.99.1+dfsg1-1ubuntu2.1 is to be installed Depends: libpulse-mainloop-glib0 (= 1:15.99.1+dfsg1-1ubuntu1) but 1:15.99.1+dfsg1-1ubuntu2.1 is to be installed E: Unable to correct problems, you have held broken packages. I have no held packages. I have seen chatter around a project that depends on librtaudio-dev suggesting it is a package maintenance issue but not sure myself. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/2024948/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp