No Sound LM 18.3 Cinnamon

[majpooper]

About a month ago I installed LM 18.3 Cinnamon on an HP all-in-one PC for some friends. They have just noticed that there is no sound - they hadn't tried the sound until yesterday. I checked all the obvious things and installed PAVCONTROL as well - no joy.

They have an AMD audio card - just one card on the system
Card Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA)
driver: snd_hda_intel bus-ID: 00:14.2
Sound: Advanced Linux Sound Architecture v: k4.13.0-38-generic
ALSA mixer shows no speakers


the funny thiong is when I go to the sound settings and test sound that works for right and left but I can not get sound from YouTube.

[administrollaattori]

Obviously the wrong output is in use. What tells commands

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aplay -l

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inxi -A

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awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)

[majpooper]

Obviously the wrong output is in use. What tells commands

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aplay -l

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inxi -A

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awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)

joe@Joe ~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
joe@Joe ~ $ inxi -A
Audio: Card Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA)
driver: snd_hda_intel
Sound: Advanced Linux Sound Architecture v: k4.13.0-38-generic
joe@Joe ~ $ awk -F"[][]" '/dB/ { print $2 }' <(amixer sget Master)
100%
joe@Joe ~ $ aplay -D plughw:0,0 /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono


[administrollaattori]

And sound hears when running aplay -D plughw:0,0 /usr/share/sounds/alsa/Front_Center.wav ?

[majpooper]

yep - they heard it

something else
joe@Joe ~ $ pulseaudio --start
N: [pulseaudio] main.c: User-configured server at {bbada5cfcc9a4a80ac8dc5ce6d9f53aa}unix:/run/user/1000/pulse/native, which appears to be local. Probing deeper.

[majpooper]

Unfortunately I cannot explain what solved this issue.
I ended up taking a "shotgun" approach because I was working remotely I had apllied several things that I had found between this forum and a few other places on the Internet. However no one was available to test after each thing that I did. Not the way I like to approach fixing things but the best I could do under the circumstances. I also did a sudo apt update as well as updated with the latest kernel.

After a RESTART the sound came on Sorry I cannot be more definitive as to the solution