>Number: 158650 >Category: usb >Synopsis: uplcom USB To COM Device doesn't transmit data, only receive >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-usb >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Jul 05 00:40:09 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Renato Tambellini >Release: 8.2-STABLE >Organization: >Environment: FreeBSD devilbox.homeunix.net 8.2-STABLE FreeBSD 8.2-STABLE #0: Wed Jun 1 05:48:46 BRT 2011 [email protected]:/usr/obj/usr/src/sys/GENERIC amd64 >Description: The USB To COM Device Prolific PL-2303 doesn't transmit data, only receive.
# dmesg | grep Prolific ugen1.4: <Prolific Technology Inc.> at usbus1 uplcom0: <Prolific Technology Inc. USB 2.0 To COM Device, class 0/0, rev 1.10/3.00, addr 4> on usbus1 # usbconfig -d 1.4 dump_device_desc ugen1.4: <USB 2.0 To COM Device Prolific Technology Inc.> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON bLength = 0x0012 bDescriptorType = 0x0001 bcdUSB = 0x0110 bDeviceClass = 0x0000 bDeviceSubClass = 0x0000 bDeviceProtocol = 0x0000 bMaxPacketSize0 = 0x0040 idVendor = 0x067b idProduct = 0x2303 bcdDevice = 0x0300 iManufacturer = 0x0001 <Prolific Technology Inc.> iProduct = 0x0002 <USB 2.0 To COM Device> iSerialNumber = 0x0000 <no string> bNumConfigurations = 0x0001 >How-To-Repeat: 1) Plug the DB9 to serial console on another box using a null-modem cable. 2) Plug the device to USB port. 3) Try to access the console: cu -l /dev/cuaU0 -s 9600 4) The terminal only receive data, not transmit. >Fix: >Release-Note: >Audit-Trail: >Unformatted: _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
