On 09/21/14 17:59, Denny Lin wrote:
Hi,

I have a Texas Instruments OMAP4440 connected via a USB cable to my
laptop running FreeBSD 10.0-RELEASE amd64.

This is the output of usbconfig -d 1.7 dump_device_desc:
ugen1.7: <OMAP4440 Texas Instruments> at usbus1, cfg=0 md=HOST spd=HIGH 
(480Mbps) pwr=ON (100mA)

   bLength = 0x0012
   bDescriptorType = 0x0001
   bcdUSB = 0x0210
   bDeviceClass = 0x00ff
   bDeviceSubClass = 0x00ff
   bDeviceProtocol = 0x00ff
   bMaxPacketSize0 = 0x0040
   idVendor = 0x0451
   idProduct = 0xd010
   bcdDevice = 0x0000
   iManufacturer = 0x0021  <Texas Instruments>
   iProduct = 0x0025  <OMAP4440>
   iSerialNumber = 0x0000  <no string>
   bNumConfigurations = 0x0001

For some reason, it repeatedly disconnects:
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1
ugen1.7: <Texas Instruments> at usbus1 (disconnected)
ugen1.7: <Texas Instruments> at usbus1

These messages also appear in /var/log/messages:
Sep 21 17:46:56 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:46:56 localhost devd: Executing 'env 
LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so
 /usr/local/etc/rc.d/webcamd   start ugen1.7'
Sep 21 17:46:56 localhost devd: Executing 'logger Unknown USB device: vendor 
0x0451 product 0xd010 bus uhub3'
Sep 21 17:46:56 localhost root: Unknown USB device: vendor 0x0451 product 
0xd010 bus uhub3
Sep 21 17:46:59 localhost kernel: ugen1.7: <Texas Instruments> at usbus1 
(disconnected)
Sep 21 17:47:00 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:47:00 localhost devd: Executing 'env 
LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so
 /usr/local/etc/rc.d/webcamd   start ugen1.7'
Sep 21 17:47:00 localhost devd: Executing 'logger Unknown USB device: vendor 
0x0451 product 0xd010 bus uhub3'
Sep 21 17:47:00 localhost root: Unknown USB device: vendor 0x0451 product 
0xd010 bus uhub3
Sep 21 17:47:03 localhost kernel: ugen1.7: <Texas Instruments> at usbus1 
(disconnected)
Sep 21 17:47:04 localhost kernel: ugen1.7: <Texas Instruments> at usbus1
Sep 21 17:47:04 localhost devd: Executing 'env 
LD_PRELOAD=/usr/local/lib/libhal.so:/usr/local/lib/libdbus-1.so:/usr/local/lib/libcuse4bsd.so
 /usr/local/etc/rc.d/webcamd   start ugen1.7'

The problem seems similar to this one: 
https://www.mail-archive.com/freebsd-usb@freebsd.org/msg08372.html

Would it be possible to fix this? Thanks.


Hi,

You can try setting:

hw.usb.no_cs_fail=1

Also run usbdump to capture the USB traffic.

usbdump -i usbus1 -f 7 -vvv -s 65536

--HPS
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