Comment 75 for bug 1840725

The comment #65 was what worked for me.

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1840725/comments/65

My OS installation is Kubuntu 18.04.

Additional and more detailed info about my laptop:

```
$ uname -a
Linux ioku 5.3.0-59-generic #53~18.04.1-Ubuntu SMP Thu Jun 4 14:58:26 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ sudo dmidecode -t system
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 3.1.1 present.

Handle 0x0012, DMI type 1, 27 bytes
System Information
 Manufacturer: LENOVO
 Product Name: 20QDCTO1WW
 Version: ThinkPad X1 Carbon 7th
 Serial Number: PF1E44X3
 UUID: 06E257CC-238A-11B2-A85C-ECF7951B56CA
 Wake-up Type: Power Switch
 SKU Number: LENOVO_MT_20QD_BU_Think_FM_ThinkPad X1 Carbon 7th
 Family: ThinkPad X1 Carbon 7th

Handle 0x0027, DMI type 12, 5 bytes
System Configuration Options

Handle 0x0037, DMI type 15, 31 bytes
System Event Log
 Area Length: 1586 bytes
 Header Start Offset: 0x0000
 Header Length: 16 bytes
 Data Start Offset: 0x0010
 Access Method: General-purpose non-volatile data functions
 Access Address: 0x00F0
 Status: Valid, Not Full
 Change Token: 0x00000062
 Header Format: Type 1
 Supported Log Type Descriptors: 4
 Descriptor 1: POST error
 Data Format 1: POST results bitmap
 Descriptor 2: PCI system error
 Data Format 2: None
 Descriptor 3: System reconfigured
 Data Format 3: None
 Descriptor 4: Log area reset/cleared
 Data Format 4: None

$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: sofsklhdacard [sof-skl_hda_card], device 0: HDA Analog (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsklhdacard [sof-skl_hda_card], device 1: HDA Digital (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsklhdacard [sof-skl_hda_card], device 6: DMIC32 (*) []
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: sofsklhdacard [sof-skl_hda_card], device 7: DMIC16 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

```