Hit this issue when upgrading from Kubuntu 18.04 to 20.04.
Solution was to "sudo apt purge timidity timidity-daemon" and the audio devices immediately were recognized by the system, didn't need to reboot.
This happened on a bog-standard 2015 era Intel-based laptop, nothing exotic.
Hit this issue when upgrading from Kubuntu 18.04 to 20.04.
Solution was to "sudo apt purge timidity timidity-daemon" and the audio devices immediately were recognized by the system, didn't need to reboot.
This happened on a bog-standard 2015 era Intel-based laptop, nothing exotic.