Why does onboard audio turn to Dummy output after installing nvidia driver?

Question

linux

Guys, hello! Today I tried Ubuntu, Xubuntu, Mint, MX Linux. Everywhere is the same - after installing the proprietary NVIDIA video driver (without it, HDMI does not see the monitor), HDA NVidia Digital Stereo becomes the only output device. If you disable HDMI in the configuration, the output device becomes Dummy output, while there is no sound from the laptop speakers and headphones. Prior to installing the NVIDEA drivers, the "internal audio device" worked fine (on multiple distributions). Tell me, please, where to dig, what to do to make the laptop speakers, headphones and microphone work (alsa does not see them).


inxi-Fxz

System:
  Host: dell Kernel: 5.3.0-42-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 
  Desktop: Xfce 4.14.1 Distro: Linux Mint 19.3 Tricia 
  base: Ubuntu 18.04 bionic 
Machine:
  Type: Laptop System: Dell product: G3 3590 v: N/A serial: <filter> 
  Mobo: Dell model: 0CVWRM v: A00 serial: <filter> UEFI: Dell v: 1.7.1 
  date: 08/28/2019 
Battery:
  ID-1: BAT0 charge: 51.0 Wh condition: 51.0/51.0 Wh (100%) 
  model: BYD DELL M4GWP9B status: Full 
CPU:
  Topology: Quad Core model: Intel Core i5-9300H bits: 64 type: MT MCP 
  arch: Kaby Lake rev: A L2 cache: 8192 KiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 38400 
  Speed: 900 MHz min/max: 800/4100 MHz Core speeds (MHz): 1: 896 2: 896 
  3: 881 4: 871 5: 870 6: 862 7: 866 8: 834 
Graphics:
  Device-1: Intel vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 
  Device-2: NVIDIA vendor: Dell driver: nvidia v: 435.21 bus ID: 01:00.0 
  Display: x11 server: X.Org 1.20.5 driver: modesetting,nvidia 
  unloaded: fbdev,nouveau,vesa resolution: 1920x1080~60Hz, 1920x1080~60Hz 
  OpenGL: renderer: GeForce GTX 1660 Ti with Max-Q Design/PCIe/SSE2 
  v: 4.6.0 NVIDIA 435.21 direct render: Yes 
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_soc_skl 
  v: kernel bus ID: 00:1f.3 
  Device-2: NVIDIA vendor: Dell driver: snd_hda_intel v: kernel 
  bus ID: 01:00.1 
  Sound Server: ALSA v: k5.3.0-42-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Dell driver: r8169 v: kernel port: 3000 bus ID: 03:00.0 
  IF: enp3s0 state: down mac: <filter> 
  Device-2: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter 
  vendor: Dell driver: ath10k_pci v: kernel port: 3000 bus ID: 04:00.0 
  IF: wlp4s0 state: up mac: <filter> 
  Device-3: Atheros type: USB driver: btusb bus ID: 1-14:4 
Drives:
  Local Storage: total: 476.94 GiB used: 9.99 GiB (2.1%) 
  ID-1: /dev/nvme0n1 model: IM2P33F3 NVMe ADATA 512GB size: 476.94 GiB 
Partition:
  ID-1: / size: 467.96 GiB used: 9.98 GiB (2.1%) fs: ext4 
  dev: /dev/nvme0n1p2 
Sensors:
  System Temperatures: cpu: 53.0 C mobo: N/A gpu: nvidia temp: 52 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 235 Uptime: 13m Memory: 7.57 GiB used: 1.17 GiB (15.4%) 
  Init: systemd runlevel: 5 Compilers: gcc: 7.5.0 Shell: bash v: 4.4.20 
  inxi: 3.0.32

Answer 1

Googled the solution: https://www.linuxuprising.com/2018/06/fix-no-sound...