@user42 the cause is in the link and solution was in https://forums.opensuse.org/t/no-sound-output-from-internal-speakers-after-update-on-tw/177253/7
Likely the newer hardware… This sort of thing occurs often in the likes of Leap releases as it doesn’t track upstream developments.
For Leap it generally requires a bug report to get the appropriate changes back-ported by the maintainer(s) so the option can be removed, else it will be present forever…