Sound stopped working after reboot.

[Aristarchus]

My hardware is audio-Technica at2100x-USB

I'm new to Ubuntu and everything was fine until i restarted (I haven't restarted for a long time).

So far I've sudo apt install --reinstall pulseaudio alsa-base pulseaudio-utils libasound2 libasound2-data libasound2-plugins
tried: https://help.ubuntu.com/community/SoundTroubleshootingProcedure

now:


presian@presian-ubuntu:~$ pulseaudio
E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.

presian@presian-ubuntu:~$ alsamixer
ALSA lib confmisc.c:855parse_card) cannot find card '0'
ALSA lib conf.c:5178_snd_config_evaluate) function snd_func_card_inum returned error: No such file or directory
ALSA lib confmisc.c:422snd_func_concat) error evaluating strings
ALSA lib conf.c:5178_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1334snd_func_refer) error evaluating name
ALSA lib conf.c:5178_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5701snd_config_expand) Evaluate error: No such file or directory
ALSA lib control.c:1528snd_ctl_open_noupdate) Invalid CTL default
cannot open mixer: No such file or directory



pavucontrol:
View attachment 19074

If alsamixer can't find card0, then first check if your kernel see system sound card. Maybe something happened during the update.
So no kernel recognized sound card (card0), no sound.

 

[Alexzee]

If alsamixer can't find card0, then first check if your kernel see system sound card. Maybe something happened during the update.
So no kernel recognized sound card (card0), no sound.

Makes sense as sound is in the kernel.