There was a regression for me too, from kubuntu 18.04 to kubuntu 18.10, as described here:
https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/675670
Basically KDE showed only the dummy output even if everything else looked right. trying "sudo alsa force-reload" was not working for me. But killing the timidity service did the trick.
There was a regression for me too, from kubuntu 18.04 to kubuntu 18.10, as described here:
https:/ /answers. launchpad. net/ubuntu/ +source/ alsa-driver/ +question/ 675670
Basically KDE showed only the dummy output even if everything else looked right. trying "sudo alsa force-reload" was not working for me. But killing the timidity service did the trick.