It seem that when you plug the USBStreamer B for the first time the asound.state does not have any channel mapping so it creates one for the first time and read it the next time when the computer boot and alsa start.
I erase the information of USBStreamer on asound.state, reload alsa and I worked.
I found what the problem was...
It seem that when you plug the USBStreamer B for the first time the asound.state does not have any channel mapping so it creates one for the first time and read it the next time when the computer boot and alsa start.
I erase the information of USBStreamer on asound.state, reload alsa and I worked.