Audio doesn´t work on ThinkPad X1 Yoga 4th Gen after linux 5.4.0 update

[Marco Trevisan (Treviño)]

This is the output of dmesg |grep 'audio\|snd':

[ 5.770962] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, aborting probe
[ 5.930352] sof-audio-pci 0000:00:1f.3: warning: No matching ASoC machine driver found
[ 5.930361] sof-audio-pci 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040380
[ 5.930980] sof-audio-pci 0000:00:1f.3: use msi interrupt mode
[ 5.940982] sof-audio-pci 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 5.953977] sof-audio-pci 0000:00:1f.3: hda codecs found, mask 5
[ 5.953979] sof-audio-pci 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
[ 5.997753] sof-audio-pci 0000:00:1f.3: Direct firmware load for intel/sof/sof-cnl.ri failed with error -2
[ 5.997757] sof-audio-pci 0000:00:1f.3: error: request firmware intel/sof/sof-cnl.ri failed err: -2
[ 5.997761] sof-audio-pci 0000:00:1f.3: error: failed to load DSP firmware -2
[ 5.997763] sof-audio-pci 0000:00:1f.3: error: sof_probe_work failed err: -2

Similar issue is repoted to arch linux: https://bbs.archlinux.org/viewtopic.php?id=251157 and https://bugs.archlinux.org/task/64720

A workaround is to use the snd_hda_intel.dmic_detect=0 module setting

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-modules-extra-5.4.0-14-generic 5.4.0-14.17
ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
Uname: Linux 5.4.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 16 14:17:17 2020
InstallationDate: Installed on 2019-10-18 (150 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QGSITE06
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-14-generic root=UUID=02a314de-7049-43d6-97e8-b79b993c30cb ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-14-generic N/A
 linux-backports-modules-5.4.0-14-generic N/A
 linux-firmware 1.186
SourcePackage: linux-5.4
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/18/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N2HET17W (1.00 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QGSITE06
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2HET17W(1.00):bd04/18/2019:svnLENOVO:pn20QGSITE06:pvrThinkPadX1Yoga4th:rvnLENOVO:rn20QGSITE06:rvrNotDefined:cvnLENOVO:ct31:cvrNone:
dmi.product.family: ThinkPad X1 Yoga 4th
dmi.product.name: 20QGSITE06
dmi.product.sku: LENOVO_MT_20QG_BU_Think_FM_ThinkPad X1 Yoga 4th
dmi.product.version: ThinkPad X1 Yoga 4th
dmi.sys.vendor: LENOVO

[Hui Wang (hui.wang)]

Please refer to bug #1867474, this is a duplicated bug to that one.