Finally repaired sound in Linux, little bit baffled by how easy it was, a € 17,- USB Creative Soundblaster didit. Read about Bluetooth audio driver problems, checked all Alsamixer settings (remember to use right arrow key) but purchasing a bit of native compatible Linux hardware didit. Should have known this, Creative is a great ancient PC audio brand, even tweaked it in DOS once.
The HiFi-sound is great, no crackling or popping any longer. This tip was established by checking a Linux hardware compatibility list.
Have fun!
