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, 2-jack in front, SPDIF I/O
allout 5-jack in back, 2-jack in front, SPDIF out
auto auto-config reading BIOS (default)
In this case it was a “full”. Go edit alsa-base
sudo gedit /etc/modprobe.d/alsa-base
Append the following line:
"options snd-hda-intel model=full"
Reload the sound card:
sudo alsa force-reload
Try rebooting if reload does not help. For more help look here:
https://help.ubuntu.com/community/SoundTroubleshooting
http://ubuntu-ky.ubuntuforums.org/showthread.php?p=8284273
http://www.alsa-project.org/db/?f=9174d1bbe036f166bc8d1557a8c2b575adf19c7c
http://ubuntudanmark.dk/forum/viewtopic.php?f=11&t=3713 (Danish)