It sounds like the problem started with kernel 3.13.0-165.215-generic
which was released on 4 Feb 2019.

Please try this kernel instead:

** Summary changed:

- PCI/internal sound card not detected
+ Inspiron 15-3552 PCI/internal sound card not detected

** Summary changed:

- Inspiron 15-3552 PCI/internal sound card not detected
+ Dell Inspiron 15-3552 PCI/internal sound card not detected

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  Dell Inspiron 15-3552 PCI/internal sound card not detected

Status in linux package in Ubuntu:

Bug description:
  in sound settings there is only dummy output, everything worked until

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-165.215-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-165-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.29
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: Unity
  Date: Fri Mar  1 18:54:52 2019
   # This is a distribution channel descriptor
   # For more information see
  InstallationDate: Installed on 2016-09-23 (889 days ago)
  InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Title: PCI/internal sound card not detected
  UpgradeStatus: No upgrade log present (probably fresh install) 06/02/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 4.0.9 0T14MC
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
dmi:bvnDellInc.:bvr4.0.9:bd06/02/2016:svnDellInc.:pnInspiron15-3552:pvr4.0.9:rvnDellInc.:rn0T14MC:rvrA00:cvnDellInc.:ct8:cvrNotSpecified: Inspiron 15-3552
  dmi.product.version: 4.0.9
  dmi.sys.vendor: Dell Inc.

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