> Thanks. It shows the error > [ 6.448531] snd_hda_intel 0000:07:00.6: no codecs found! > and that's the crucial error. Yes. The same conclusion was reached in the openSUSE hardware forum. > Did the sound work on Leap 15.4 in the past? If it's a regression, it'd be > helpful to narrow down the regression range. This is a new machine. I've never faced the situation where the CPU and the motherboard both have sound hardware.