I got my sound device working again by rolling back to update 17
lspci | grep -i audio
0000:00:1f.3 Multimedia audio controller: Intel Corporation Alder Lake PCH-P High Definition Audio Controller (rev 01)

sudo eopkg history -t 17
This has fixed it for me (Vivobook 14 from 2022)
Aug. 17th edit:
I tried the update again and this time - no issues. Sound is fine. Not sure what has changed or if something just went wrong tha last time. I hope it stays that way.

The latest update fixed it momentarily until I rebooted. Then back to dummy output.

Hi,
Is there any progress with this issue?
Is there anything we can help with?

    bigrammy It is annoying, but I trust the team to figure out what is happening. This is a big regression on audio.

      A few errors in dmesg.

      rammy@bigrammy ~ $ dmesg | grep sof
[    0.058044] software IO TLB: area num 4.
[    0.404119] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    0.404120] software IO TLB: mapped [mem 0x00000000668b8000-0x000000006a8b8000] (64MB)
[    4.722066] sof-audio-pci-intel-icl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
[    4.722151] sof-audio-pci-intel-icl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
[    4.722162] sof-audio-pci-intel-icl 0000:00:1f.3: enabling device (0000 -> 0002)
[    4.722267] sof-audio-pci-intel-icl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
[    4.722311] sof-audio-pci-intel-icl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_fence_ops [i915])
[    4.729366] sof-audio-pci-intel-icl 0000:00:1f.3: use msi interrupt mode
[    4.745508] sof-audio-pci-intel-icl 0000:00:1f.3: hda codecs found, mask 4
[    4.745514] sof-audio-pci-intel-icl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
[    4.745518] sof-audio-pci-intel-icl 0000:00:1f.3: DMICs detected in NHLT tables: 2
[    4.748841] sof-audio-pci-intel-icl 0000:00:1f.3: Firmware paths/files for ipc type 0:
[    4.748845] sof-audio-pci-intel-icl 0000:00:1f.3:  Firmware file:     intel/sof/sof-icl.ri
[    4.748846] sof-audio-pci-intel-icl 0000:00:1f.3:  Topology file:     intel/sof-tplg/sof-hda-generic-idisp-2ch.tplg
[    4.749371] sof-audio-pci-intel-icl 0000:00:1f.3: Firmware info: version 2:2:0-57864
[    4.749373] sof-audio-pci-intel-icl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
[    4.749376] sof-audio-pci-intel-icl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
[    4.850225] sof-audio-pci-intel-icl 0000:00:1f.3: Firmware info: version 2:2:0-57864
[    4.850235] sof-audio-pci-intel-icl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
[    4.861732] sof-audio-pci-intel-icl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
[    4.861939] sof-audio-pci-intel-icl 0000:00:1f.3: error: sink BUF2.0\x98 not found
[    4.862029] sof-audio-pci-intel-icl 0000:00:1f.3: error: tplg component load failed -22
[    4.862036] sof-audio-pci-intel-icl 0000:00:1f.3: error: failed to load DSP topology -22
[    4.862039] sof-audio-pci-intel-icl 0000:00:1f.3: ASoC: error at snd_soc_component_probe on 0000:00:1f.3: -22
rammy@bigrammy ~ $
      4 days later

      Seems like sound is working again after last update and rebooting on my laptop! \o/ I hope it'll last. I hope it wasn't too hard to solve the issue.

      Just to confirm it's working again on Budgie with kernel version com.solus-project.current.6.10.6-300

      Thanks.

      Weirdly, I can no longer boot into the current kernel, something related to the snaps mounts (I have some snap packages installed). I guess I will have to wait until LTS gets the correction.

        AlphaElwedritsch Thank you. I found the issue, lack of space for the kernel boot files. Fixed it and now I can report that latest current fixes the issue. I wanted to be on lts though, will check again in the future.