No sound on Dell G3 15 3590 with Ubuntu 18.04

Asked by Gabriel Tognella Poccia on 2020-05-22

I've installed recently Ubuntu 18.04 in a new Dell G3 15 3590. However, I don't have any sound on my system. I've tried a lot of common solutions, but none worked. It seems my problem is that linux don't recognize my internal audio device, only the HDMI. Pavucontrol don't show analog output, nor pacmd. I'll let above some cmd returns.

{sudo aplay -l

**** Lista de Dispositivos PLAYBACK Hardware ****
placa 0: NVidia [HDA NVidia], dispositivo 3: HDMI 0 [HDMI 0]
  Dispositivo secundário: 1/1
  Dispositivo secundário #0: subdevice #0

{lspci -v | grep -A7 -i "audio"
00:1f.3 Multimedia audio controller: Intel Corporation Cannon Lake PCH cAVS (rev 10)
 Subsystem: Dell Device 0949
 Flags: bus master, fast devsel, latency 32, IRQ 16
 Memory at a5518000 (64-bit, non-prefetchable) [size=16K]
 Memory at a5200000 (64-bit, non-prefetchable) [size=1M]
 Capabilities: <access denied>
 Kernel driver in use: sof-audio-pci
 Kernel modules: snd_hda_intel, sof_pci_dev

00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
 Subsystem: Dell Device 0949
 Flags: medium devsel, IRQ 255
 Memory at a5520000 (64-bit, non-prefetchable) [size=256]
 I/O ports at efa0 [size=32]
01:00.1 Audio device: NVIDIA Corporation Device 10fa (rev a1)
 Subsystem: Dell Device 0949
 Flags: bus master, fast devsel, latency 0, IRQ 17
 Memory at a3080000 (32-bit, non-prefetchable) [size=16K]
 Capabilities: <access denied>
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd_hda_intel

It only sees NVIDIA sound card, so I can't have sound through built-in speakers nor even use built-in microphones or P2 heaphones

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