Alan Stern wrote: > On Sun, 2 Aug 2015, Jakob Schürz wrote: >> P: Vendor=138a ProdID=003f Rev= 1.04 > > Do you happen to know what this device is? usb.ids says Validity Sensors VFS495 Fingerprint Reader. > Does it make any difference if you remove the Bluetooth radio and the > HP webcam? They compete for bandwidth on the same bus as the AC209N > speakers. > > In theory there should be plenty of bandwidth for all these devices to > run at the same time. All these devices have (small) interrupt endpoints for some kind of status reporting. It might be possible that the sheer number of periodically scheduled transactions overflows some limit in the firmware or driver. Regards, Clemens -- 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
