No sound from speakers or headphones, can't figure out why

General system Gaming, sound and video
1

Well, like probably many others, I thought I knew what I was getting myself into with Arch, having used Ubuntu exclusively for a few years and being a software engineer and familiar with owning and configuring my own tools.

But alas, I have no sound. Nor keyboard backlighting, but that’s a separate issue for another day.

I’ve spent a fair amount of time over the last two weeks since I installed Endeavor learning and reading, but I feel no closer to solving the issue. I’d really like to not just solve the issue but understand it, since half the reason I chose Arch is to learn. But right now I feel like I’m at square and unsure what to dive into next to fix this.

I’m running Endeavor on a laptop with a Windows dual boot, but live in the Arch side. And it is great! Except for the sound, and only on Arch. The microphone works, I am able to record sound and then play it out using a bluetooth speaker. PulseAudio Volume Control shows changes in sound output when I’m playing a video or a song. Systemctl shows that Pipewire’s status is active and pactl info shows Server Name: PulseAudio (on PipeWire 1.0.5) so between that and other commands I at least have a few reasons to be confident that pipewire is indeed in use and on.

I can get sound out of this laptop is with Bluetooth, interestingly. That is alright since I can join meetings with my tablet, but it would be nice to have proper working speakers or to be able to use my fancy headphones again.

Anyone familiar able to help out? Thank you in advance!

2

Other info:
Running sudo fuser -v /dev/snd/* results in:

/dev/snd/controlC0:  zach      F.... wireplumber
/dev/snd/controlC1:  zach      F.... wireplumber
/dev/snd/seq:        zach      F.... pipewire

aplay -lL output:

null
    Discard all samples (playback) or generate zero samples (capture)
lavrate
    Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pipewire
    PipeWire Sound Server
pulse
    PulseAudio Sound Server
speex
    Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
default
    Default ALSA Output (currently PipeWire Media Server)
sysdefault:CARD=PCH
    HDA Intel PCH, ALC1220 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    Front output / input
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=PCH,DEV=0
    HDA Intel PCH, ALC1220 Digital
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=PCH,DEV=0
    HDA Intel PCH, HDMI 0
    HDMI Audio Output
hdmi:CARD=PCH,DEV=1
    HDA Intel PCH, HDMI 1
    HDMI Audio Output
hdmi:CARD=PCH,DEV=2
    HDA Intel PCH, HDMI 2
    HDMI Audio Output
hdmi:CARD=PCH,DEV=3
    HDA Intel PCH, HDMI 3
    HDMI Audio Output
usbstream:CARD=PCH
    HDA Intel PCH
    USB Stream Output
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
    HDA NVidia, HDMI 1
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 2
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
    HDA NVidia, HDMI 3
    HDMI Audio Output
usbstream:CARD=NVidia
    HDA NVidia
    USB Stream Output
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC1220 Analog [ALC1220 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC1220 Digital [ALC1220 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

pactl list cards output:

Card #30968
	Name: alsa_card.pci-0000_01_00.1
	Driver: alsa
	Owner Module: n/a
	Properties:
		api.acp.auto-port = "false"
		api.alsa.card = "1"
		api.alsa.card.longname = "HDA NVidia at 0x77000000 irq 17"
		api.alsa.card.name = "HDA NVidia"
		api.alsa.path = "hw:1"
		api.alsa.use-acp = "true"
		api.dbus.ReserveDevice1 = "Audio1"
		api.dbus.ReserveDevice1.Priority = "-20"
		device.api = "alsa"
		device.bus = "pci"
		device.bus_path = "pci-0000:01:00.1"
		device.description = "HDA NVidia"
		device.enum.api = "udev"
		device.icon_name = "audio-card-analog-pci"
		device.name = "alsa_card.pci-0000_01_00.1"
		device.nick = "HDA NVidia"
		device.plugged.usec = "6605334"
		device.product.id = "0x22bd"
		device.subsystem = "sound"
		sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
		device.vendor.id = "0x10de"
		device.vendor.name = "NVIDIA Corporation"
		media.class = "Audio/Device"
		factory.id = "14"
		client.id = "59"
		object.id = "49"
		object.serial = "30968"
		object.path = "alsa:pcm:1"
		alsa.card = "1"
		alsa.card_name = "HDA NVidia"
		alsa.long_card_name = "HDA NVidia at 0x77000000 irq 17"
		alsa.driver_name = "snd_hda_intel"
		alsa.mixer_name = "Nvidia GPU a6 HDMI/DP"
		alsa.components = "HDA:10de00a6,10de0000,00100100"
		alsa.id = "NVidia"
		device.string = "1"
	Profiles:
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
		output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5900, available: no)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no)
		pro-audio: Pro Audio (sinks: 4, sources: 0, priority: 1, available: yes)
	Active Profile: off
	Ports:
		hdmi-output-0: HDMI / DisplayPort (type: HDMI, priority: 5900, latency offset: 0 usec, availability group: Legacy 1, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 1"
				device.icon_name = "video-display"
				card.profile.port = "0"
			Part of profile(s): output:hdmi-stereo, output:hdmi-surround, output:hdmi-surround71
		hdmi-output-1: HDMI / DisplayPort 2 (type: HDMI, priority: 5800, latency offset: 0 usec, availability group: Legacy 2, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 2"
				device.icon_name = "video-display"
				card.profile.port = "1"
			Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-surround-extra1, output:hdmi-surround71-extra1
		hdmi-output-2: HDMI / DisplayPort 3 (type: HDMI, priority: 5700, latency offset: 0 usec, availability group: Legacy 3, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 3"
				device.icon_name = "video-display"
				card.profile.port = "2"
			Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-surround-extra2, output:hdmi-surround71-extra2
		hdmi-output-3: HDMI / DisplayPort 4 (type: HDMI, priority: 5600, latency offset: 0 usec, availability group: Legacy 4, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 4"
				device.icon_name = "video-display"
				card.profile.port = "3"
			Part of profile(s): output:hdmi-stereo-extra3, output:hdmi-surround-extra3, output:hdmi-surround71-extra3

Card #30969
	Name: alsa_card.pci-0000_00_1f.3
	Driver: alsa
	Owner Module: n/a
	Properties:
		api.acp.auto-port = "false"
		api.alsa.card = "0"
		api.alsa.card.longname = "HDA Intel PCH at 0x6205230000 irq 225"
		api.alsa.card.name = "HDA Intel PCH"
		api.alsa.path = "hw:0"
		api.alsa.use-acp = "true"
		api.dbus.ReserveDevice1 = "Audio0"
		api.dbus.ReserveDevice1.Priority = "-20"
		device.api = "alsa"
		device.bus = "pci"
		device.bus_path = "pci-0000:00:1f.3"
		device.description = "Built-in Audio"
		device.enum.api = "udev"
		device.form_factor = "internal"
		device.icon_name = "audio-card-analog-pci"
		device.name = "alsa_card.pci-0000_00_1f.3"
		device.nick = "HDA Intel PCH"
		device.plugged.usec = "6734278"
		device.product.id = "0x7a50"
		device.subsystem = "sound"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.vendor.id = "0x8086"
		device.vendor.name = "Intel Corporation"
		media.class = "Audio/Device"
		factory.id = "14"
		client.id = "59"
		object.id = "58"
		object.serial = "30969"
		object.path = "alsa:pcm:0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0x6205230000 irq 225"
		alsa.driver_name = "snd_hda_intel"
		alsa.mixer_name = "Realtek ALC1220"
		alsa.components = "HDA:10ec1220,1558d702,00100101 HDA:80862818,80860101,00100000"
		alsa.id = "PCH"
		device.string = "0"
	Profiles:
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6565, available: yes)
		output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6500, available: yes)
		output:hdmi-stereo+input:analog-stereo: Digital Stereo (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5965, available: no)
		output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5900, available: no)
		output:hdmi-stereo-extra1+input:analog-stereo: Digital Stereo (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5765, available: no)
		output:hdmi-stereo-extra2+input:analog-stereo: Digital Stereo (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5765, available: no)
		output:hdmi-stereo-extra3+input:analog-stereo: Digital Stereo (HDMI 4) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5765, available: no)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (sinks: 1, sources: 0, priority: 5700, available: no)
		output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5565, available: yes)
		output:iec958-stereo: Digital Stereo (IEC958) Output (sinks: 1, sources: 0, priority: 5500, available: yes)
		output:hdmi-surround+input:analog-stereo: Digital Surround 5.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 865, available: no)
		output:hdmi-surround71+input:analog-stereo: Digital Surround 7.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 865, available: no)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: no)
		output:hdmi-surround-extra1+input:analog-stereo: Digital Surround 5.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround71-extra1+input:analog-stereo: Digital Surround 7.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround-extra2+input:analog-stereo: Digital Surround 5.1 (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround71-extra2+input:analog-stereo: Digital Surround 7.1 (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround-extra3+input:analog-stereo: Digital Surround 5.1 (HDMI 4) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround71-extra3+input:analog-stereo: Digital Surround 7.1 (HDMI 4) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: no)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (sinks: 1, sources: 0, priority: 600, available: no)
		output:iec958-ac3-surround-51+input:analog-stereo: Digital Surround 5.1 (IEC958/AC3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 365, available: yes)
		output:iec958-ac3-surround-51: Digital Surround 5.1 (IEC958/AC3) Output (sinks: 1, sources: 0, priority: 300, available: yes)
		input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 65, available: yes)
		pro-audio: Pro Audio (sinks: 6, sources: 1, priority: 1, available: yes)
	Active Profile: output:analog-stereo+input:analog-stereo
	Ports:
		analog-input-internal-mic: Internal Microphone (type: Mic, priority: 8900, latency offset: 0 usec, availability group: Legacy 1, availability unknown)
			Properties:
				port.type = "mic"
				port.availability-group = "Legacy 1"
				device.icon_name = "audio-input-microphone"
				card.profile.port = "0"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:iec958-stereo+input:analog-stereo, output:iec958-ac3-surround-51+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1+input:analog-stereo, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2+input:analog-stereo, output:hdmi-stereo-extra3+input:analog-stereo, output:hdmi-surround-extra3+input:analog-stereo, output:hdmi-surround71-extra3+input:analog-stereo
		analog-input-mic: Microphone (type: Mic, priority: 8700, latency offset: 0 usec, availability group: Legacy 2, not available)
			Properties:
				port.type = "mic"
				port.availability-group = "Legacy 2"
				device.icon_name = "audio-input-microphone"
				card.profile.port = "1"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:iec958-stereo+input:analog-stereo, output:iec958-ac3-surround-51+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1+input:analog-stereo, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2+input:analog-stereo, output:hdmi-stereo-extra3+input:analog-stereo, output:hdmi-surround-extra3+input:analog-stereo, output:hdmi-surround71-extra3+input:analog-stereo
		analog-output-speaker: Speakers (type: Speaker, priority: 10000, latency offset: 0 usec, availability group: Legacy 3, availability unknown)
			Properties:
				port.type = "speaker"
				port.availability-group = "Legacy 3"
				device.icon_name = "audio-speakers"
				card.profile.port = "2"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-headphones: Headphones (type: Headphones, priority: 9900, latency offset: 0 usec, availability group: Legacy 4, not available)
			Properties:
				port.type = "headphones"
				port.availability-group = "Legacy 4"
				device.icon_name = "audio-headphones"
				card.profile.port = "3"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		iec958-stereo-output: Digital Output (S/PDIF) (type: SPDIF, priority: 0, latency offset: 0 usec, availability unknown)
			Properties:
				port.type = "spdif"
				card.profile.port = "4"
			Part of profile(s): output:iec958-stereo, output:iec958-stereo+input:analog-stereo
		hdmi-output-0: HDMI / DisplayPort (type: HDMI, priority: 5900, latency offset: 0 usec, availability group: Legacy 5, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 5"
				device.icon_name = "video-display"
				card.profile.port = "5"
			Part of profile(s): output:hdmi-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71, output:hdmi-surround71+input:analog-stereo
		hdmi-output-1: HDMI / DisplayPort 2 (type: HDMI, priority: 5800, latency offset: 0 usec, availability group: Legacy 6, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 6"
				device.icon_name = "video-display"
				card.profile.port = "6"
			Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1, output:hdmi-surround71-extra1+input:analog-stereo
		hdmi-output-2: HDMI / DisplayPort 3 (type: HDMI, priority: 5700, latency offset: 0 usec, availability group: Legacy 7, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 7"
				device.icon_name = "video-display"
				card.profile.port = "7"
			Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2, output:hdmi-surround71-extra2+input:analog-stereo
		hdmi-output-3: HDMI / DisplayPort 4 (type: HDMI, priority: 5600, latency offset: 0 usec, availability group: Legacy 8, not available)
			Properties:
				port.type = "hdmi"
				port.availability-group = "Legacy 8"
				device.icon_name = "video-display"
				card.profile.port = "8"
			Part of profile(s): output:hdmi-stereo-extra3, output:hdmi-stereo-extra3+input:analog-stereo, output:hdmi-surround-extra3, output:hdmi-surround-extra3+input:analog-stereo, output:hdmi-surround71-extra3, output:hdmi-surround71-extra3+input:analog-stereo
3

I fixed it! It actually ended up being very related to the keyboard backlight issue, interestingly enough.

I spent some time this morning fixing the keyboard backlighting, and on a whim, started searching for audio issues on Arch Linux specifically having to do with Clevo laptops. That led me to https://bbs.archlinux.org/viewtopic.php?id=292139 and a few other items that helped.

On my system, /etc/modprobe.d/alsa-base.conf did not exist, so I created the file manually (which I don’t think is proper, but for the moment it is acceptable), and populated it with the text shared in that link, options snd-hda-intel model=clevo-p950.

I then rebooted and it worked! I now have sound.

Posting for visibility/in case anyone else has a Clevo computer with this issue and doesn’t know what to do about a lack of /etc/modprobe.d/alsa-base.conf, and to have this fix in another place.