I have Ubuntu 18.04.3 LTS at my old laptop Samsung NP350E5C-S05. A little strange but sometimes I have audio issue.
It happens especially when I turn on the laptop. I try playing music / YouTube video but nothing plays. When I run audio settings and run through cards like "Input, Output, Sound effects, Programs" sound works (two times, sometimes one).
After that sound works perfect, as long as I don't need to reboot the machine. In the long perspective it is really frustrating. I have another PC with Debian(gnome) and something like that doesn't happen there at all.
Previously I had Ubuntu 16.04 with the same problem.
lspci
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