Hi Paul,

>  does the pre-built firmware file from
https://github.com/thesofproject/sof/releases work?

I tried the releases 1.4.1 and 1.3 as well as followed their
instractions to build from latest soource. The sof-icl.ri did not work
for me with 5.5-rc1 and 5.4. I did not check for 5.3 because my sound
card (Intel Corporation Device [8086:34c8]) was working well already
with the snd_hda_intel module.

> 2. With the firmware file installed, does Linux 5.3 work with `dsp_driver=0`? 
Yes. Without and with that option 5.3 will load snd_hda_intel for the sound 
card.

> Please attach the Linux messages from the non-working and working
boot.

Find attached the outputs. I think the interesting bit is in the not
working boot:

 sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 
0x040100
 sof-audio-pci 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF 
driver
 sof-audio-pci 0000:00:1f.3: enabling device (0000 -> 0002)
 sof-audio-pci 0000:00:1f.3: warning: No matching ASoC machine driver found
 sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 
0x040100
 sof-audio-pci 0000:00:1f.3: use msi interrupt mode
 sof-audio-pci 0000:00:1f.3: bound 0000:00:02.0 (ops 
i915_audio_component_bind_ops [i915

> you should also install the other firmware files like for graphics.
I have linux-firmware installed. The video looks good for now, so I will ignore 
that issue :|

** Attachment added: "dmesg_linux.tar"
   
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1856366/+attachment/5312385/+files/dmesg_linux.tar

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1856366

Title:
  PCI/internal sound card not detected

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  No sound card detected with kernel 5.5.0-050500rc1-generic

  1. Description:       Ubuntu 19.10
  Release:      19.10

  2. linux-image-
  unsigned-5.5.0-050500rc1-generic_5.5.0-050500rc1.201912081930_amd64.deb

  3. have at least one soundcard

  4. cat /proc/asound/cards reports:
  --- no soundcards ---

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  Uname: Linux 5.5.0-050500rc1-generic x86_64
  NonfreeKernelModules: hda_intel
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Dec 13 22:09:17 2019
  InstallationDate: Installed on 2019-12-13 (0 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Title: PCI/internal sound card not detected
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/05/2019
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.07
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: Floris_IL
  dmi.board.vendor: IL
  dmi.board.version: V1.07
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnInsydeCorp.:bvrV1.07:bd09/05/2019:svnAcer:pnSwiftSF314-57:pvrV1.07:rvnIL:rnFloris_IL:rvrV1.07:cvnAcer:ct10:cvrChassisVersion:
  dmi.product.family: Swift 3
  dmi.product.name: Swift SF314-57
  dmi.product.sku: 0000000000000000
  dmi.product.version: V1.07
  dmi.sys.vendor: Acer
  mtime.conffile..etc.modprobe.d.alsa-base.conf: 2019-12-13T20:34:57.551680

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