Hello,
I´ve just installed Tumbleweed on an Inspiron Laptop. But there is no sound… (On the dual boot, also Windows gave me trouble and sound worked only after some updates).
Anyway, I manually installed alsa, lasa utils and firmware but without success. If I try Yast Sound, I see the following errors with Comet Lake PCH cAVS:
The last one says that the kernel module snd-sof-pci-intel-cnf for the sound couldn´t load. A possible reason could be a wrong module parameter or invalid IO or IRQ parameter.
I tried running the following commands maybe it could help you help me 
Marouane@localhost:~> cat /etc/modprobe.d/50-sound.conf
cat: /etc/modprobe.d/50-sound.conf: Datei oder Verzeichnis nicht gefunden
Marouane@localhost:~> /usr/sbin/hwinfo --sound
17: PCI 1f.3: 0401 Multimedia audio controller
[Created at pci.386]
Unique ID: nS1_.bMUlJ_vpq3D
SysFS ID: /devices/pci0000:00/0000:00:1f.3
SysFS BusID: 0000:00:1f.3
Hardware Class: sound
Model: “Intel Comet Lake PCH cAVS”
Vendor: pci 0x8086 “Intel Corporation”
Device: pci 0x06c8 “Comet Lake PCH cAVS”
SubVendor: pci 0x1028 “Dell”
SubDevice: pci 0x09ef
Memory Range: 0x6023118000-0x602311bfff (rw,non-prefetchable)
Memory Range: 0x6023000000-0x60230fffff (rw,non-prefetchable)
IRQ: 16 (2 events)
Module Alias: “pci:v00008086d000006C8sv00001028sd000009EFbc04sc01i00”
Driver Info #0:
Driver Status: snd_hda_intel is not active
Driver Activation Cmd: “modprobe snd_hda_intel”
Driver Info #1:
Driver Status: snd_soc_skl is not active
Driver Activation Cmd: “modprobe snd_soc_skl”
Driver Info #2:
Driver Status: snd_sof_pci_intel_cnl is not active
Driver Activation Cmd: “modprobe snd_sof_pci_intel_cnl”
Config Status: cfg=no, avail=yes, need=no, active=unknown
Marouane@localhost:~>
Marouane@localhost:~> cat /proc/asound/cards
— no soundcards —
Marouane@localhost:~> aplay -l
aplay: device_list:274: keine Soundkarten gefunden …
Marouane@localhost:~>
Are there any suggestion to how to solve this please?
Thank you very much in advance!