karthiksharmasg@xxxxxxx wrote: > > I will look into that, you are saying there are 2 > devices but when i use "device tree" it is showing only one device, > what that this mean?. "Device" is an overloaded term. The virtual microphone and the virtual speaker are handled by the same driver. That's all I meant. -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc.