Dell Latitude 7320 Detachable — internal audio missing on FydeOS Intel Modern

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  • Description:

  • I tested FydeOS on this device because I’m hoping to use it as a tablet Android/linux device, but I ran into a major hardware issue with internal audio.

  • FydeOS detects the Intel audio controller, but it only exposes HDMI/DisplayPort audio outputs. The built-in speakers and built-in headphone jack do not appear as usable audio devices.

In the FydeOS UI, the sound icon has a slash through it.

:computer:System & Device Information

  • Device Model: Dell Latitude 7320 Detachable
  • Processor: Intel Tiger Lake-LP platform CPU, 11th Gen Intel(R) Core™ i7-1180G7
  • Graphics Card Integrated Intel graphics only, no discrete GPU
  • RAM: 16 GB
  • FydeOS Version: FydeOS for PC (Modern Intel), v22.0-SP1, Non-commercial Edition
    Platform 16503.20.22.14
    Chromium 144.0.7559.32

I re-flashed the same device with Ubuntu Desktop and tested the hardware, all sound devices worked.

From Dell documentation, this model uses:

  • Realtek ALC711
  • Intel SoundWire
  • universal audio jack
  • Relevant System Logs:

PCI audio controller detection

lspci | grep -i audio

Output:

00:1f.3 Multimedia audio controller: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 20)

ALSA cards
cat /proc/asound/cards

Output:

0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0x6054198000 irq 168

Playback devices
aplay -l

Output:

**** List of PLAYBACK Hardware Devices ****
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

Kernel log excerpt
dmesg | grep -i -E ‘sof|soundwire|snd|audio|hda’

Output:

[ 4.910915] pci 0000:00:1f.3: attach allowed to drvr snd_hda_intel [internal device]
[ 4.913077] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
[ 4.913109] snd_hda_intel 0000:00:1f.3: enabling device (0000 → 0002)
[ 4.930205] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops __SCT__tp_func_intel_frontbuffer_flush [i915])
[ 5.068143] snd_hda_intel 0000:00:1f.3: attach allowed to drvr snd_soc_avs [internal device]
[ 5.105798] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
[ 5.110465] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
[ 5.114628] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19
[ 5.115653] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

Could you please let me know

  1. this model is known to be unsupported,
  2. there is an existing workaround or test build,

I’d be happy to provide more logs or test additional builds if needed. I’m going to spend some time this week with OpenFyde and see if I can get something going.

Fyde really has some good bones to it, there’s nothing that quite hits all the wants I have like this.

Smaller issues I have too
-Touchscreen keyboard doesn’t appear at login screen
-Front and rear camera (not important to me)