I recently switched from DisplayPort to HDMI for connecting my computer to my display. Generally, the audio works fine via the built-in speakers in the monitor via HDMI but after the computer goes to sleep it no longer works. I have checked the Sound settings and there are no output devices listed. Any ideas?
This occurs on Ubuntu 18.10 and I upgraded to 19.04 today and the issue persists.
$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 19.04 Release: 19.04 Codename: disco
$ cat /proc/version Linux version 5.0.0-13-generic (buildd@lcy01-amd64-020) (gcc version 8.3.0 (Ubuntu 8.3.0-6ubuntu1)) #14-Ubuntu SMP Mon Apr 15 14:59:14 UTC 2019