Hello, Open bug in launchpad.net https://bugs.launchpad.net/bugs/1799541 "My ASUS Xonar D2X (AV200) is not detected and not present in the PulseAudio list of sinks (pactl list sinks) or sources (pactl list sources). It is detected by ALSA, as shown by "cat /proc/asound/cards" and "aplay -L". When PulseAudio is not running, I can also play audio by "aplay -D default /usr/share/sounds/alsa/Front_Center.wav" on the D2X card, I can hear the sound, so the sound card is physically working. This problem appeared after an upgrade from Kubuntu 18.04 to 18.10. D2X in PulseAudio was working fine in 18.04." Best regards, -- Cristian Aravena Romero (caravena)
It is not a kernel bug.