Got an error after rebooting Linux Ubuntu, the dound card did not work after an update. Find which codec you’re using cat /proc/asound/card0/codec#* | grep Codec or aplay -l Codec: C-Media CMI9880 CMI9880 minimal 3-jack in back min_fp 3-jack in back, 2-jack in front full 6-jack in back, 2-jack in front full_dig 6-jack in back,