did try with freebsd11 also and it fails in the same point at usb_pc_cpu_flush. Is this a known issue ? any suggestions would help -- View this message in context: http://freebsd.1045724.n5.nabble.com/usb-pc-cpu-flush-tp5975583p5975773.html Sent from the freebsd-usb mailing list archive at Nabble.com.