> OpenSUSE Leap 42.2 XFCE Desktop running on Lenovo W530 laptop. Audio
> mixer is HDA Intel PCH (Alsa mixer).
> The audio feedback is deafening using the laptop built-in speaker/mike
> system despite my having the feedback box checked.
> My smaller laptop (Lenovo T400) with similar mixer works very well.
> Is there some further adjustment that I can make or am I forced to use
> an accessory headset/mike?
Sorry, you cannot do anything except using headset...