This bug was fixed in the package linux-oem-5.6 - 5.6.0-1020.20

---------------
linux-oem-5.6 (5.6.0-1020.20) focal; urgency=medium

  * focal/linux-oem-5.6: 5.6.0-1020.20 -proposed tracker (LP: #1886753)

  * Realtek [10ec:c82f] Subsystem [17aa:c02f] Wifi adapter not found
    (LP: #1886247)
    - SAUCE: rtw88: 8822ce: add support for device ID 0xc82f

  * [WD19TB] external DP failed with DRM error message (LP: #1886165)
    - drm/i915/tgl: Update TC DP vswing table
    - drm/i915/tgl: Implement WA_16011163337
    - SAUCE: drm/i915/bios: add intel_bios_hdmi_level_shift()
    - drm/i915/tgl: Add HBR and HBR2+ voltage swing table
    - drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed
    - drm/i915/tgl+: Use the correct DP_TP_* register instances in MST encoders
    - drm/i915/tgl+: Fix TBT DPLL fractional divider for 38.4MHz ref clock

  * ubuntu_aufs_smoke_test failed on Focal OEM 5.6 (LP: #1879308)
    - SAUCE: fs: Enable aufs

 -- Timo Aaltonen <[email protected]>  Wed, 08 Jul 2020
11:44:53 +0300

** Changed in: linux-oem-5.6 (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1882613

Title:
  alsa: front mics could not work on a couple of Lenovo ThinkCenter
  machines

Status in HWE Next:
  New
Status in linux-oem-5.6 package in Ubuntu:
  Fix Released
Status in linux-oem-5.6 source package in Focal:
  Fix Released

Bug description:
  This patch is cced to stable kernel, so it will be merged to other
  ubuntu kernels automatically, and because the oem project schedule, we
  need to merge this patch to oem-5.6 first.

  [Impact]
  There are 2 front mic on those lenovo thinkcenter machines, but all
  front mics can't work.

  [Fix]
  change the location for one of the mics, then pulseaudio could handle
  them.

  [Test Case]
  Boot the kernel with this patch, plug microphone/headset to either
  front mic jack, the mic could be detected and could record the sound.

  [Regression Risk]
  Low, just adding a new pintbl to match those lenovo machines.

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