This bug was fixed in the package pulseaudio - 1:11.1-1ubuntu7.9

pulseaudio (1:11.1-1ubuntu7.9) bionic; urgency=medium

  [Kai-Chuan Hsieh]
  * alsa-mixer: Correct ucm card name (LP: #1881094)

  [Hui Wang]
  * d/p/0901-alsa-solaris-oss-remove-unnecessary-error-handling-w.patch
  * d/p/0902-alsa-Improve-resume-logic-after-alsa-suspend.patch
  * (LP: #1882042)

 -- Kai-Chuan Hsieh <>  Wed, 27 May 2020
16:42:50 +0800

** Changed in: pulseaudio (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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  Support kernel 5.4 Intel sound driver on bionic

Status in OEM Priority Project:
  Fix Committed
Status in pulseaudio package in Ubuntu:
Status in pulseaudio source package in Bionic:
  Fix Released

Bug description:

   * Some Intel platform bionic user audio function will be broken after
  upgrade to kernel 5.4

   * pulseaudio can't find working profile, since card name is changed
  in kernel 5.4

  [Test Case]

   * install kernel 5.4 and check audio function
     1. enable Pre-released updates in Developer Options
        Software & Updates > Developer Options > Pre-released updates 
     2. $ sudo apt update
     3. $ sudo apt install linux-generic-hwe-18.04-edge
     4. $ sudo reboot

   * install updated linux-firmware and pulseaudio
     $ sudo add-apt-repository ppa:kchsieh/training
     $ sudo apt-get update
     $ sudo apt install linux-firmware
     $ sudo apt install pulseaudio
     $ sudo reboot

   * test items
     1. check internal speaker/mic to playback and record audio
     2. plug headset and check headset functions
     3. plug HDMI from external monitor/TV, and check audio functions
     4. 1, 2, 3 works fine after resume from suspend

  [Regression Potential]

   * The updated pulseaudio breaks audio function on old kernel


   * Need for bionic only

  [Bug Discussion]

   * MP:

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