Hi, 

I received a couple firmware updates through fwupdmgr yesterday and rebooted this morning. I don't have sound any more (back to dummy output :( )

here is what dmesg has to say now

[    0.261799] ACPI: Added _OSI(Linux-Dell-Video)
[    0.261800] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[    0.261801] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[    1.782736] integrity: Loading X.509 certificate: UEFI:db
[    1.782748] integrity: Loaded X.509 cert 'Microsoft Corporation UEFI CA 2011: 13adbf4309bd82709c8cd54f316ed522988a1bd4'
[    1.782748] integrity: Loading X.509 certificate: UEFI:db
[    1.782776] integrity: Loaded X.509 cert 'Microsoft Windows Production PCA 2011: a92902398e16c49778cd90f99e4f9ae17c55af53'
[    1.783436] ima: Allocated hash algorithm: sha1
--
[   55.805639] iwlwifi 0000:00:14.3: base HW address: dc:71:96:b9:0a:d2
[   55.808007] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, aborting probe
[   55.816168] thinkpad_acpi: battery 1 registered (start 0, stop 100)
--
[   55.874276] thermal thermal_zone6: failed to read out thermal zone (-61)
[   55.881996] snd_soc_skl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040380
[   55.891486] snd_soc_skl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[   55.958245] Adding 999420k swap on /dev/mapper/vgubuntu-swap_1.  Priority:-2 extents:1 across:999420k SSFS
--
[   56.067815] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0
[   56.084957] skl_hda_dsp_generic skl_hda_dsp_generic: Unsupported HDAudio/iDisp configuration found
[   56.084962] skl_hda_dsp_generic: probe of skl_hda_dsp_generic failed with error -22


here are the updates I received and applied by rebooting today 


 • 20QDCTO1WW System Firmware (0.1.29 → 0.1.30)
 • ThinkPad X1 Yoga 4th / Carbon 7th Thunderbolt Controller (43.00 → 44.00)

from dmidecode

BIOS Information
	Vendor: LENOVO
	Version: N2HET47W (1.30 )
	Release Date: 03/18/2020
System Information
	Manufacturer: LENOVO
	Product Name: 20QDCTO1WW
	Version: ThinkPad X1 Carbon 7th

installed packages

dpkg -l | grep -E 'libasound2|linux-firmware|linux-image|linux-modules'                                                                                                                                                           [130]
ii  libasound2:amd64                           1.1.9-0ubuntu1.2++++testucm            amd64        shared library for ALSA applications
ii  libasound2-data                            1.1.9-0ubuntu1.2++++testucm            all          Configuration files and profiles for ALSA drivers
ii  libasound2-plugins:amd64                   1.1.9-0ubuntu1                         amd64        ALSA library additional plugins
ii  linux-firmware                             1.183.5                                all          Firmware for Linux kernel drivers
ii  linux-image-5.3.0-45-generic               5.3.0-45.37                            amd64        Signed kernel image generic
ii  linux-image-generic                        5.3.0.45.38                            amd64        Generic Linux kernel image
ii  linux-modules-5.3.0-45-generic             5.3.0-45.37                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP
ii  linux-modules-extra-5.3.0-45-generic       5.3.0-45.37                            amd64        Linux kernel extra modules for version 5.3.0 on 64 bit x86 SMP