Comment 10 for bug 1881432

Let us see if the HDMI sound card or analogue sound card introduced this problem, please edit /etc/modprobe.d/alsa-base.conf, add "options snd-hda-intel enable=0,1", reboot, this will disable the hdmi audio sound card (please check if the hdmi sound card is disabled successfully by pacmd list-cards). If the hdmi audio is disabled, please see if the problem still happens or not.

If the problem still happens, please change enable=0,1 to enable=1,0, this will disable analog sound card, and let us see if the problem happens or not.