This bug was fixed in the package linux-oem - 4.15.0-1093.103

---------------
linux-oem (4.15.0-1093.103) bionic; urgency=medium

  * bionic/linux-oem: 4.15.0-1093.103 -proposed tracker (LP: #1887026)

  * [SRU] plug headset won't proper reconfig ouput to it on machine with default
    output (LP: #1882248)
    - SAUCE: ALSA: hda - let hs_mic be picked ahead of hp_mic

  * Freezing on boot since kernel 4.15.0-72-generic release (LP: #1856387)
    - x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode

  [ Ubuntu: 4.15.0-112.113 ]

  * bionic/linux: 4.15.0-112.113 -proposed tracker (LP: #1887048)
  * Packaging resync (LP: #1786013)
    - update dkms package versions
  * CVE-2020-11935
    - SAUCE: aufs: do not call i_readcount_inc()
    - SAUCE: aufs: bugfix, IMA i_readcount
  * CVE-2020-10757
    - mm: Fix mremap not considering huge pmd devmap
  * Update lockdown patches (LP: #1884159)
    - efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN
    - efi: Restrict efivar_ssdt_load when the kernel is locked down
    - powerpc/xmon: add read-only mode
    - powerpc/xmon: Restrict when kernel is locked down
    - [Config] CONFIG_XMON_DEFAULT_RO_MODE=y
    - SAUCE: acpi: disallow loading configfs acpi tables when locked down
  * seccomp_bpf fails on powerpc (LP: #1885757)
    - SAUCE: selftests/seccomp: fix ptrace tests on powerpc
  * Introduce the new NVIDIA 418-server and 440-server series, and update the
    current NVIDIA drivers (LP: #1881137)
    - [packaging] add signed modules for the 418-server and the 440-server
      flavours

  [ Ubuntu: 4.15.0-111.112 ]

  * bionic/linux: 4.15.0-111.112 -proposed tracker (LP: #1886999)
  * Bionic update: upstream stable patchset 2020-05-07 (LP: #1877461)
    - SAUCE: mlxsw: Add missmerged ERR_PTR hunk
  * linux 4.15.0-109-generic network DoS regression vs -108 (LP: #1886668)
    - SAUCE: Revert "netprio_cgroup: Fix unlimited memory leak of v2 cgroups"

 -- Kelsey Skunberg <kelsey.skunb...@canonical.com>  Tue, 14 Jul 2020
12:21:34 -0600

** Changed in: linux-oem (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-10757

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-11935

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https://bugs.launchpad.net/bugs/1882248

Title:
  [SRU] plug headset won't proper reconfig ouput to it on machine with
  default output

Status in HWE Next:
  New
Status in OEM Priority Project:
  Confirmed
Status in linux-oem package in Ubuntu:
  New
Status in pulseaudio package in Ubuntu:
  Fix Released
Status in linux-oem source package in Bionic:
  Fix Released
Status in pulseaudio source package in Bionic:
  Fix Committed

Bug description:
  This is for pulseaudio bionic:

  [Impact]
  On a Dell machine without internal spk and internal mic, after freshly
  install the bionic on it, the active profile is Off, after users plug a
  headset to it and users select the headset from the pop-up dialogue,
  users expect the profile changes to analog-stereo (headset is on it),
  but the active_profile is still Off.

  [Fix]
  Upstream already has a patch to fix it, cherrypiack that patch to bionic.
  And that patch is already in the eoan, focal, ...

  [Test Case]
  freshly install the bionic with this patch on that dell machine,
  plug headset and select the headset from UI, the profile changes to
  analog-stereo, and play some sound, we could hear it from the headset

  [Regression Risk]
  Low, this patch is already in the upstream for a long time, and it is
  already in the eoan and focal.


  
  For linux kernel (oem-b):

  [Impact]
  On a Dell machine without internal spk and internal mic, after freshly
  install the bionic on it, and users plug a headset, the sound couldn't
  output from headset.

  [Fix]
  reverse the order of headset mic and headphone mic

  [Test Case]
  freshly install the bionic with this patch on that dell machine,
  plug headset and play sound, we could hear the sound from headset.

  [Regression Risk]
  Low, this patch only affects the machine without internal mic and
  internal spk, and I already tested this patch on the machine without
  internal mic and internal spk, it worked well.

  target machine does not have built-in speaker, and the monitor does
  not have an audio output (like d-sub VGA)

  As first boot, there will be a "dummy output" in g-c-c.

  After plug-in headset, there will be a headset appear in g-c-c, but it
  won't be automatically selected even it's chosen in the pop-up window.

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