Used then
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alsactl -nrestore
echo alsactl nrestore >alsafix
Then
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chmod +x alsafix&&cp alsafix /sbin
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"./alsafix"
Hardware: Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
Card: HDA Intel PCH │ Chip: Realtek ALC269VC
(in my case a Panasonic Toughbook CF-C2)
hope that can help others to fix the IntelHDA/realtek no sound dummy output issue on linux mint 19.