Audio not working


#1

I tried changing some of the outputs for the audio it does not work at all, any suggestions?


#2

Here, after logging in, I use to click on the audio mixer tray icon and then I press the “Test” button. The first click fails, and the second one works. After that, all sound works.

How does it work for you?


#3

Ok let me try that.


#4

Has the system discovered a sound device? Mine says on the terminal:

$ sudo dmesg|grep pcm                                                                                                                                             
pcm0: <Realtek ALC283 (Front Analog Headphones)> at nid 33 on hdaa0
pcm1: <Intel Kabylake (HDMI/DP 8ch)> at nid 3 on hdaa1
$ sudo cat /dev/sndstat
Installed devices:
pcm0: <Realtek ALC283 (Front Analog Headphones)> (play) default
pcm1: <Intel Kabylake (HDMI/DP 8ch)> (play)
No devices installed from userspace.

The $ is the prompt and must not be entered.

Here only the Realtek device works, sound via HDMI not so far.


#5

the cat /dev/sndstat command is a good one to remember. It tells you what devices have been exposed (detected and drivers loaded)

sudo sysctl -a | grep -i snd | grep -i default
will dump out the sysctls pull out the ones related to sound (snd) and then the ones with “default” in them. Look for one saying “default_unit”. That unit number should match up to what /dev/sndstat is tagging as default.
If they system thinks the default is analog headphones and you are listening on a USB audio device, you hear nothing.

The usb_audio kernel module may not be loaded by default.
sudo kldload usb_audio.ko