After running alsa-info, it appears that the headphones were detected and started to show in Settings GUI, also showing in the attached pacmd list report.
** Attachment added: "pacmd list after alsa-info with headphones connected" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1888992/+attachment/5396231/+files/pacmd_list_after_alsa-info_with_headphones.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888992 Title: [Realtek ALC892, Green Headphone Out, Front] Not detecting/switching to front jack after plugging in headphones To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1888992/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs