1. If you could help us to debug the sound problem some more, please try changing "realtime-scheduling" to "yes" and confirm that re-introduces the bug.
2. Your red icon is a different bug, most likely (usually) caused by failed or broken updates... (i) Try removing all PPAs from the system using 'ppa-purge'. (ii) Try: sudo apt update ; sudo apt -f full-upgrade (iii) Log a new bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788471 Title: There is no sound when you turn on the tube. Sometimes the sound is. I do not understand why this is so To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1788471/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
