Realizing this likely has more to do with the lack of driver support for usb-c hubs on linux - per pulseaudio's documentation ( https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module- switch-on-port-available ) :
"# module-switch-on-connect Earlier this module was required to automatically switch to a newly plugged in USB sound card, but nowadays USB sound cards have higher priority than internal sound cards, so they automatically become the default sink (unless you have manually configured the default sink to be something else) and the need for this module is greatly reduced." "#module-switch-on-port-available (not on USB sound cards, though, since they don't support jack detection)" -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1938623 Title: Audio output & input routes to usb-c hub (where audio jack is disconnected) instead of laptop speakers Status in pulseaudio package in Ubuntu: Opinion Bug description: I'm using Ubuntu 21.04 with an intel tablet and a lenovo usb-c hub that has an audio adapter: See https://linux- hardware.org/?probe=09f8c72d80/ I never have anything hooked into the audio jack on usb-c hub, yet every time I plug my tablet into the usb-c hub the sound output switches to the usb-c hub instead of staying routed to the tablet speakers. I then have to go either into settings or use a sound output extension to switch it back to the speakers. This issue does not happen when using Windows 10 - audio stays routed through the tablet speakers - my guess is that it goes a step further and detects whether an audio jack actually has a cable plugged in or not. What package handles determining default audio routing for Ubuntu 21.04 / Gnome 3.38.5? I'd like to file a bug about this / possibly see if I can help make the defaults work better. See also OS confusion about default audio sink - pulse: https://askubuntu.com/questions/1231935/os-confusion-about-default- audio-sink-pulse To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1938623/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
