Hi, is it and how is it possible when using the acm_tty that there is not sent any interrupt or control URB? My connected device has problems handling this stuff and doesn't respond to the bulk URB which is timed somewhere between. I've found e.g. URB_NO_INTERRUPT and USBDEVFS_URB_NO_INTERRUPT in http://code.metager.de/source/xref/linux/stable/drivers/usb/core/devio.c#1386 but how do I set this? Can it be done with ioctl? Some notes would be fine. Thanks a lot Markus -- 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