After having worked properly for a month, my sound card went missing. It was probably after I forced a restart (laptop frozen).
I am running Ubuntu 14.04.4 LTS on a laptop with a pretty basic Sound Card Intel 2 Channel High Definition Audio.
aplay -l
gives
aplay: device_list:268: no soundcards found...
lsmod | grep snd
gives nothing.
I tried many solutions but none seems to work. Any ideas?