[Bug 1915117] Re: [Regression] Audio card [8086:9d71] not detected after upgrade from linux 5.4 to 5.8

[Mathew Hodson]

** No longer affects: linux-firmware (Ubuntu Impish)

** No longer affects: linux-firmware (Ubuntu)

** No longer affects: linux-firmware (Ubuntu Focal)

** No longer affects: linux-firmware (Ubuntu Hirsute)

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Title:
  [Regression] Audio card [8086:9d71] not detected after upgrade from
  linux 5.4 to 5.8

Status in alsa-topology-conf package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in alsa-topology-conf source package in Focal:
  New
Status in alsa-ucm-conf source package in Focal:
  Confirmed
Status in linux source package in Focal:
  Confirmed
Status in alsa-topology-conf source package in Hirsute:
  New
Status in alsa-ucm-conf source package in Hirsute:
  Won't Fix
Status in linux source package in Hirsute:
  Fix Released
Status in alsa-topology-conf source package in Impish:
  New
Status in alsa-ucm-conf source package in Impish:
  Won't Fix
Status in linux source package in Impish:
  Fix Released

Bug description:
  [SRU Justification]

  [Impact]
  Skylake, Kabylake, Kabylake-refresh, Amberlake and some other platforms where audio is of SPT (PCH) type, HDA (with DSP capabilities) plus DMIC configuration is supported on these with skylake driver since kernel 5.8. However, no sound card can be detected w/o the topology binary file in /lib/firmware and corresponding ucm file.

  [Fix]
  The kernel config CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC needa to be enabled for the snd_soc_skl driver to support HDA+DMIC configuration. And the topology binary file and UCM files need to be located in the correct path based on Intel's suggestion. https://gist.github.com/crojewsk/4e6382bfb0dbfaaf60513174211f29cb.

  [Test]
  On the Skylake/Kabylake platforms with either the PCI device 8086:9d70 and 8086:9d71, boot up the machine and check the existence of the sound card by either 'aplay -l' or 'pactl list' command. 

  [Where problems could occur]
  Should be low risk, it only affects limited Intel Platforms with particular PCI device IDs + HDA plus DMIC configuration.

  
  ========== Original Bug Description ==========

  
  Ubuntu version: 20.10 (updated from 20.04)
  Kernel: 5.8.0-41-generic #46-Ubuntu
  Manufacturer: Acer
  Product Name: Swift SF314-54
  BIOS Revision: 1.11

  Audio card: Realtek High Definition Audio
  Multimedia audio controller [0401]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)

  Summary
  =======

  After upgrading from linux kernel 5.4 to 5.8, there is no more sound
  card available. However, if I select kernel 5.4 in GRUB, the sound
  card is available.

  Steps to reproduce
  ==================

  1. Install 20.04 or 20.10 with a kenel 5.4
  2. Check that sound output works as excepted (Settings > Sound > Output > Test)
  3. Check that `alsa-info` command returns information
  4. Upgrade kernel to 5.8

  Expected results
  ================

  Sound output still works.

  Actual results
  ==============

  2. Sound card is available, and sound can be output to the internal speakers.
  4. No more sound card detected (Sound Settings display "Dummy Output" in the list of output devices).

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: linux-image-5.8.0-41-generic 5.8.0-41.46
  ProcVersionSignature: Ubuntu 5.8.0-41.46-generic 5.8.18
  Uname: Linux 5.8.0-41-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.5
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Feb  9 14:42:00 2021
  InstallationDate: Installed on 2019-01-20 (751 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
  MachineType: Acer Swift SF314-54
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-41-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash mem_sleep_default=deep vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.8.0-41-generic N/A
   linux-backports-modules-5.8.0-41-generic  N/A
   linux-firmware                            1.190.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to groovy on 2021-02-03 (5 days ago)
  dmi.bios.date: 11/21/2018
  dmi.bios.release: 1.11
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.11
  dmi.board.name: Strongbow_KL
  dmi.board.vendor: KBL
  dmi.board.version: V1.11
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.11
  dmi.ec.firmware.release: 1.6
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.11:bd11/21/2018:br1.11:efr1.6:svnAcer:pnSwiftSF314-54:pvrV1.11:rvnKBL:rnStrongbow_KL:rvrV1.11:cvnAcer:ct10:cvrV1.11:
  dmi.product.family: Swift 3
  dmi.product.name: Swift SF314-54
  dmi.product.sku: 0000000000000000
  dmi.product.version: V1.11
  dmi.sys.vendor: Acer

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