Comment 0 for bug 1914881

There is no sound output from the laptop internal speakers when running Ubuntu 20.10.

This is a dual-boot system;
 - Booting windows first and then rebooting to Ubuntu = sound works fine
 - Booting Ubuntu first and then rebooting to Windows - Windows identifies sound as not enables and runs its troubleshooter to enable it

The card seems to be recognised OK (system sound settings report output device as Speaker - Tiger Lake-LP Smart Sound technology Audio Controller. VU meters etc all appear as if sound is playing, but no sound.

Headphone socket works perfectly.

Similar bug reports for different laptops in the HP x360 series suggest this is a pinning problem and that the extract below from the boot logs may support this.

lsb_release -rd
Description: Ubuntu 20.10
Release: 20.10

aplay -l

**** List of PLAYBACK Hardware Devices ****
card 0: sofhdadsp [sof-hda-dsp], device 0: HDA Analog (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 1: HDA Digital (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 3: HDMI1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 4: HDMI2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofhdadsp [sof-hda-dsp], device 5: HDMI3 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

extract from journalctl -b

kernel: snd_hda_codec_realtek ehdaudio0D0: autoconfig for ALC245: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:>
kernel: snd_hda_codec_realtek ehdaudio0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
kernel: snd_hda_codec_realtek ehdaudio0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
kernel: snd_hda_codec_realtek ehdaudio0D0: mono: mono_out=0x0
kernel: snd_hda_codec_realtek ehdaudio0D0: inputs:
kernel: snd_hda_codec_realtek ehdaudio0D0: Mic=0x19

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
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:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: derek 1460 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 6 20:48:52 2021
InstallationDate: Installed on 2021-02-04 (2 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:sofhdadsp failed
Symptom_Card: Tiger Lake-LP Smart Sound Technology Audio Controller - sof-hda-dsp
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: derek 1460 F.... pulseaudio
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [HP Spectre x360 Convertible 14-ea0xxx, Realtek ALC245, Speaker, Internal] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/13/2021
dmi.bios.release: 15.9
dmi.bios.vendor: AMI
dmi.bios.version: F.09
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 87F7
dmi.board.vendor: HP
dmi.board.version: 40.43
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 40.43
dmi.modalias: dmi:bvnAMI:bvrF.09:bd01/13/2021:br15.9:efr40.43:svnHP:pnHPSpectrex360Convertible14-ea0xxx:pvr:rvnHP:rn87F7:rvr40.43:cvnHP:ct31:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Spectre
dmi.product.name: HP Spectre x360 Convertible 14-ea0xxx
dmi.product.sku: 2G2C7EA#ABU
dmi.sys.vendor: HP