The issue of #3 is a known issue in the pulesaudio. About the hdmi audio can't be detected, maybe it is the graphic driver's issue, do you install the nvidia-drivers after upgrading?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1940458 Title: Audio Device not recognized. Problem with sound. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1940458/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
