No soundcards found on new Thinkpad T16 Gen4 with Tumbleweed

Hi, today i got my new Thinkpad T16 Gen4 and installed and updated Tumbleweed on it. Most of the stuff works but sound is not.

  1. on kde plasma the little speaker symbol is crossed out
  2. aplay -l returns: “aplay: device_list:279: no soundcards found…”
  3. systemctl status pipwire returns: Unit pipewire.service could not be found.

Is there anything else helpful?
Any tips on how to enable the soundcard?

Can you show the output from

inxi -ASxx
inxi -ASxx
System:
  Host: focus Kernel: 6.15.2-1-default arch: x86_64 bits: 64 compiler: gcc
    v: 14.3.0
  Console: pty pts/3 wm: kwin_x11 DM: SDDM Distro: openSUSE Tumbleweed
    20250614
Audio:
  Device-1: Intel vendor: Lenovo driver: sof-audio-pci-intel-mtl
    bus-ID: 00:1f.3 chip-ID: 8086:7728
  API: ALSA v: k6.15.2-1-default status: kernel-api with: aoss
    type: oss-emulator
  Server-1: PipeWire v: 1.4.5 status: n/a (root, process) with:
    1: pipewire-pulse status: active 2: wireplumber status: active
    3: pipewire-alsa type: plugin 4: pw-jack type: plugin

Is the package sof-firmware installed? If not, install it and restart machine.

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the package is installed but a restart solved the issue nevertheless. Thank you.

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