On Wed, 27 Oct 2010, Daniel Stöckner wrote: > In fact I meant 6 mono channels (=3 stereo channels). Sorry for not > making this clear and thank you Steve! Okay, that clears up one mystery. But there are other puzzling things. Seeing a usbmon trace from the working system would answer some questions. For example, the lsusb output shows that interfaces 1 and 9 both use endpoint 1-out, and interfaces 2 and 10 both use endpoint 3-in. This is a violation of the USB spec (unless the audio class has an exception that allows it). In addition, the maxpacket sizes for endpoint 3-in on interface 10 are 384 and 592 bytes for 16-bit and 24-bit respectively, rather than 196 and 296 bytes. Why is that? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
