Here is the trace with urb enabled. Why do i get all those zeros? Thanks for your help.
[default](3) JavaxUsbInterfaceRequest.c.claim_interface[96] Claimed interface 2
[xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request
[xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request
[xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request.
[xfer](5) JavaxUsbDeviceProxy.c.submitRequest[135] Submitting SetInterface Request.
[xfer](3) JavaxUsbControlRequest.c.set_interface[177] Setting interface 2 to setting 1
[xfer](3) JavaxUsbControlRequest.c.set_interface[186] Set interface
[xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request
[xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request
[xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request.
[xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request.
[xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB
[urb](2) JavaxUsb.h.debug_urb[273] isochronous_pipe_request : URB endpoint = 84 status = 0 signal = 0
[urb](2) JavaxUsb.h.debug_urb[274] isochronous_pipe_request : URB buffer length = 50 actual length = 0
[urb](3) JavaxUsb.h.debug_urb[288] isochronous_pipe_request : URB data = 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[xfer](1) JavaxUsbPipeRequest.c.pipe_request[73] Could not submit URB (errno -22)
[xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request
Error in recording data: Error submitting IRP : Invalid
[hotplug](3) JavaxUsbTopologyUpdater.c.build_device[112] Building device /proc/bus/usb/001/001
Charles
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