Dummy Output Sound Error

Question

So, suddenly my system has no sound, on Settings -> Audio there's only one option: Dummy Output.

I tried alsamixer but it gives an error:

cannot open mixer: No such file or directory

There's no alsa-base.conf file in /etc/modeprobe.d.

Pavucontrol doesn't recognize any cards.

If I run pulseaudio it gives

E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.

Any suggestions? This is my first post, so sorry if it's confusing.

My Ubuntu machine does that too sometimes. Usually, when I reboot the machine, the problem is fixed. Do try it and see if your problem was fixed. — jindan, Mar 20 '20 at 14:00

score 0 · Answer 1 · answered Mar 20 '20 at 14:05

0

I'm having the same problem with Ubuntu 18.04 LTS I've tried the kernel 5.3.28 in Grub (Advanced options to Ubuntu) and the sound works. The problem is in kernel 5.3.42.

answered Mar 20 '20 at 14:05

Jéssica Motta

21

I'll give it a try. Thanks! – Bento Carlos Mar 20 '20 at 14:06
You're welcome. I hope that Ubuntu fixed this, I've tried kernel 5.4 and 5.5 and doesn't work. – Jéssica Motta Mar 20 '20 at 18:09
I tried this and it does not work. After logging in when using kernel 5.3.28 or 5.3.40 the computer freezes. – Kostas Jun 18 '20 at 16:04

Dummy Output Sound Error

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