(interrupted by mistake) Currently: - There seems to be no "relation" of any settings of esp. microfone settings in KDE/plasma and "alsamixer", they seem to "fight" against each other. I currently only use ALSA, to get "stable" settings. - ALSA devices have completely different device names than shown in PULSE and/or Plasma. ALSA mixer says just "Logitech USB Headset", PULSE says "Headset H390 Analog ...". Which in fact is Logitech's product name, but confusing - as you see on the screenshot, there are two (2) microphone devices shown for this USB headset, which for sure has only one mic. No clue why there are two. Verified that no other sound device than the USB headset is shown with lsusb and also lspci. So BIOS disable should have been successful. - Are these two ALSA "sound cards" ("0" - "Logitech USB Headset" and "-" - "(Standard)" = "PulseAudio" the normal way or also erroneous? Is there any chance to "drop" all sound hardware and their settings and let YAST "re-detect" them? Any hints would be great :-)