No sound on Linux

[quaternion]

I've bought a new LG Gram 16 (model 16T90SP-K.ADB9U1) laptop and want to install Linux on it. Everything's fine except the audio doesn't work. I've also tried KDE Neon, but the issue still persists. The sound is mute even in the Live boot.

Output of lspci -v:

00:1f.3 Multimedia audio controller: Intel Corporation Meteor Lake-P HD Audio Controller (rev 20)
       DeviceName: Onboard - Sound
       Subsystem: LG Electronics, Inc. Meteor Lake-P HD Audio Controller
       Flags: bus master, fast devsel, latency 32, IRQ 247, IOMMU group 16
       Memory at 5020310000 (64-bit, non-prefetchable) [size=16K]
       Memory at 5020000000 (64-bit, non-prefetchable) [size=2M]
       Capabilities: <access denied>
       Kernel driver in use: snd_hda_intel
       Kernel modules: snd_hda_intel, snd_sof_pci_intel_mtl
​

inxi -SMA:

Audio:
Device-1: Intel Meteor Lake-P HD Audio driver: snd_hda_intel
API: ALSA v: k6.8.0-51-generic status: kernel-api
Server-1: PipeWire v: 1.0.5  status: active

​

Please help.

[Qqmike]

No one is as yet replying to you about technical sound card issues ...
But while waiting, let's check to be sure your sound is not muted in the system tray. On your desktop, at the bottom of screen, usually over at the right side, the sound icon.
Not crossed out with a red line? Left-click on that icon. Now check the two tabs, Devices and Applications, nothing muted?
(This has happened in the past to other users.)