Comment # 7 on bug 1226088 from Michael Andres

@Gustavo: Please run as root:
> zypper in --debug-solver ''

Zypper will not install anything, but tell you that a solver test case is
generated.
> ...
> Generating solver test case...
> Solver test case generated successfully at /var/log/zypper.solverTestCase.

After this please attach the file 
  /var/log/zypper.solverTestCase/zypp-modalias.yaml
to this bugreport (use the 'Add an attachment' link above the initial
description).

The file list the hardware we detected on your system and we can check whether
this matches sof-firmware supplements.