Only seems to occur when the PC has been connected to AC charger for a
very long time. Unfortunately I cannot reproduce that situation at the

** Attachment added: "acpidump.gz"

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  Dell Vostro 5568 - Sound device disappears after connecting headphones

Status in linux package in Ubuntu:

Bug description:
  With all kernel versions so far tested including mainline v4.15.4 the
  audio device permanently disappears even after a cold reboot once the
  headphones have been plugged/unplugged.

  Looks to be a firmware issue; latest firmware has been installed but
  issue remains.

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