 @Eickmeyer [Chris I urge you to work with us here. If this is a bug, we need to get it fixed …], Just experimented again with US Controls after re-enabling the US PPA backports with some success. I have got my audio interface working with … Jack and the three bridge options. I finally realised that even though Jack autostarts itself
 it is not actually running when you look in the sound settings in the top right corner of the screen. So, although OS appears to reverse the unchecking of Jack Auto Start on reboot, in fact it doesn't affect the sound settings if you click on 'Apply Audio Settings' unless you restart Jack. … It is a little confusing. Perhaps it could be
[19:25] <studiobot>  clarified?
 Chris Ubuntu Studio Controls is merely a configuration application. It does not show Jack's status, and the checkboxes do not show how Jack was configured when it was started. Adding some sort of Jack status is work-in-progress.
 It also does not run in the background.
 To reiterate: the confusing thing is the fact the OS reverses the unchecking of Jack Auto Start on reboot even though Jack isn't actually operating in Sound Settings (top right of screen). Wouldn''t it make more sense for auto start to remain unchecked after reboot so that it's clear that Jack needs to be restarted?  … Apologies for the
[19:36] <studiobot>  lengthy post but there may be others like me who are easily confused. 😁
[19:38] <Eickmeyer[m]> !ubuntustudio-controls | @Chris this is the documentation
 Anyway, the good news is that I have got sound working with or without Jack in 18.04 and the backports are re-enabled for the extended support.  … Had a long look at 19.04 release and the audio works fine with or without Jack there too. Very impressive. Thanks to all involved!
 @Eickmeyer [Chris Ubuntu Studio Controls is merely a configuration application. It does not …], A Jack Status indicator is a great idea.