Oh I think I can guess what the problem is. Any settings remembered by the GUI/daemon/session may get overridden by this in /etc/pulse/default.pa:
### Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794) .ifexists module-switch-on-connect.so load-module module-switch-on-connect .endif If you remove that load-module line then it might do what you want. Please try it. ** Also affects: gnome-control-center (Ubuntu) Importance: Undecided Status: New ** Also affects: gnome-settings-daemon (Ubuntu) Importance: Undecided Status: New ** Changed in: gnome-control-center (Ubuntu) Status: New => Incomplete ** Changed in: gnome-settings-daemon (Ubuntu) Status: New => Incomplete ** Summary changed: - PulseAudio can not remember my settings between reboots + PulseAudio always prefers USB mic over the internal mic -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1748620 Title: PulseAudio always prefers USB mic over the internal mic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1748620/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs