Keith A. Milner wrote: >>> kernel: [ 1987.452947] usb 1-1: Unable to change format on ep #8e: already in use > > So the error messages are due to a userspace app trying to open playback and > capture at the same time? For this device, playback requires a running capture stream to determine the rate of packets. This error happens when the application tries to open the capture stream after the playback stream. (If the format does not actually need to change, the error message is misleading.) Your actual problem is that the device does not send any capture packets. Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
