@Pierre Equoy: It looks like you are having 2 issues. The Sound selection UI not appearing and no sound coming out after plug-in. Can you have a look at this question https://answers.launchpad.net/ubuntu/+question/690501. Is this the problem you are having with sound. Should I link my question to your bug report?
It seems like its an issue with Dell's hardware and whatever changes were made between 19.10 -> 20.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871329 Title: No "Select Audio Device" panel when plugging headphones, and no sound output to headphones To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1871329/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs