> Can anyone explain to me, how the GPIOMASK and MUXSEL influence the device driver and thus the result of my grabs. See Sound-FAQ for what gpio does. And pick up something newer than 0.7.28 first, the FAQ has been updated recently. > I know one more card which has significant grabbing problems if used with my hardware, it's Number 37. It differs from Number 35 (the best) only in the gpiomask --- except from audio details. I'd expect pll makes a difference. Might be some other chip which is connected to the gpio pins too. Most cards have just some audio mux chip connected to the gpio pins. Gerd -- Protecting the children is a good way to get a lot of adults who cant stand up for themselves. -- seen in some sig on /.