Sound card not found

The grub-file was modified correctly. The device is not recognized.

I did some more research and took a picture of the three commands.

  1. "lshw" proves that the card is present and has been detected in the hardware list.
  2. The driver is mentioned in "journalctl."
  3. Finally, with "cat /proc/asound/cards," the card is not available in the system.

Make sure firmware-sof-signed is installed in your system. Run the following find -type f -name firmware-sof-signed on terminal. If not installed, you can try using hda-intel instead.

You might have to remove the "snd_hda_intel.dmic_detect=0" from your boot command line

FYI. In case you want to give it a try next time (and for future reference for anybody who will encounter the same issue). I've read posts somewhere and all they did was remove or add these lines on grub boot command:

Remove or change to "=1":
snd_hda_intel.dmic_detect=0

Add:
snd-intel-dspcfg.dsp_driver=1

@jun-dee:
That's exactly what I tried and it didn't work.

@Ponce-De-Leon
Addendum to the standby mode issue I mentioned in my last post.

My PC no longer turns back on after it has been put into standby mode. Normally, you press the power button to turn the PC back on. When I do that, I can see on the Bluetooth soundbar that the system is booting up, but the screen remains black. The only options now are to press the reset button or power off the PC.

This behavior is known online, and there have been several attempts to resolve it, but no concrete solution. It's an incompatibility between my hardware and the OS.

My solution: Configure the power off button from standby to off, disable automatic standby after a while in the system setup, and finally, never use the standby button in the shutdown menu.

I hope that's all the problems with my individual hardware. I'm still really enjoying the new Zorin OS. Now that the sound is working, my grandchildren are playing "SpaceKadett" and diligently practicing their arithmetic.

Very good

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