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I have a Dell XPS 15 9570 and it's great, except that no sound comes out of the speakers. Weirdly enough it works just fine out of headphones! Just the built-in speakers are the problem.

Everything I can find reports all systems go. pavucontrol looks great:

pactl list sinks doesn't show anything that stands out to me:

Sink #0

State: RUNNING

Name: alsa_output.pci-0000_00_1f.3.analog-stereo

Description: Built-in Audio Analog Stereo

Driver: module-alsa-card.c

Sample Specification: s16le 2ch 44100Hz

Channel Map: front-left,front-right

Owner Module: 6

Mute: no

Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB

        balance 0.00

Base Volume: 65536 / 100% / 0.00 dB

Monitor Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor

Latency: 22200 usec, configured 25000 usec

Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 

Properties:

    alsa.resolution_bits = "16"

    device.api = "alsa"

    device.class = "sound"

    alsa.class = "generic"

    alsa.subclass = "generic-mix"

    alsa.name = "ALC3266 Analog"

    alsa.id = "ALC3266 Analog"

    alsa.subdevice = "0"

    alsa.subdevice_name = "subdevice #0"

    alsa.device = "0"

    alsa.card = "0"

    alsa.card_name = "HDA Intel PCH"

    alsa.long_card_name = "HDA Intel PCH at 0xed618000 irq 146"

    alsa.driver_name = "snd_hda_intel"

    device.bus_path = "pci-0000:00:1f.3"

    sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"

    device.bus = "pci"

    device.vendor.id = "8086"

    device.vendor.name = "Intel Corporation"

    device.product.id = "a348"

    device.product.name = "Cannon Lake PCH cAVS"

    device.form_factor = "internal"

    device.string = "front:0"

    device.buffering.buffer_size = "352800"

    device.buffering.fragment_size = "176400"

    device.access_mode = "mmap+timer"

    device.profile.name = "analog-stereo"

    device.profile.description = "Analog Stereo"

    device.description = "Built-in Audio Analog Stereo"

    alsa.mixer_name = "Realtek ALC3266"

    alsa.components = "HDA:10ec0298,1028087c,00100103 HDA:8086280b,80860101,00100000"

    module-udev-detect.discovered = "1"

    device.icon_name = "audio-card-pci"

Ports:

    analog-output-speaker: Speakers (priority: 10000)

    analog-output-headphones: Headphones (priority: 9000, not available)

Active Port: analog-output-speaker

Formats:

    pcm

I also looked into a theory that the headphone jack wasn't registering plugs/unplugs, but as far as I can tell that's working just fine.

Anyway, I'm at a loss. Any ideas? I'm using Arch linux, if that matters, and, in case it wasn't clear, I'm using pulseaudio.