And if you couldn't find the configured_xxx, you could use pacmd set-
default-sink xxxxx to switch to hdmi audio instead of using your normal
way to witch the audio device.

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  pulseaudio has is buggy with hdmi audio and sleep/wake

Status in pulseaudio package in Ubuntu:

Bug description:
  on a fresh Ubuntu 20.04 x64 install, I've noticed some troubling bugs
  with pulseaudio after putting my system to sleep and then waking it
  up. these bugs aren't present on a fresh boot, only after resuming
  from sleep:

  - it forgets which sound output device it's set to, and always reverse to the 
motherboard's S/PDIF output.
  - I have two devices connected to my video card, one is a displayport 
monitor, and one is a home theater receiver via HDMI. it confuses the two, and 
randomly switches which device it thinks is capable of surround sound.
  - it sometimes refuses to switch to the correct audio device, and just resets 
any choice back to the internal S/PDIF, until the system is rebooted.

  as you can imagine, this a pretty frustrating state of affairs.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: pulseaudio 1:13.99.1-1ubuntu3.4
  ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
  Uname: Linux 5.4.0-40-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset 
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
   /dev/snd/controlC1:  tessa      3387 F.... pulseaudio
   /dev/snd/pcmC1D7p:   tessa      3387 F...m pulseaudio
   /dev/snd/controlC2:  tessa      3387 F.... pulseaudio
   /dev/snd/controlC0:  tessa      3387 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jul 22 18:38:42 2020
  InstallationDate: Installed on 2020-07-15 (7 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install) 04/18/2018
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3503
  dmi.board.asset.tag: To be filled by O.E.M. GRYPHON Z97
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
dmi:bvnAmericanMegatrendsInc.:bvr3503:bd04/18/2018:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnGRYPHONZ97:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: ASUS MB All Series
  dmi.product.sku: All
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS

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