>Number:         190253
>Category:       usb
>Synopsis:       Zyd: device timeout after a while.
>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:   Mon May 26 09:10:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     neoedmund
>Release:        10.0
>Organization:
>Environment:
FreeBSD pcbsd-6004 10.0-RELEASE FreeBSD 10.0-RELEASE #0: Wed May  7 02:05:55 
HKT 2014     neoedmund@pcbsd-6004:/usr/obj/usr/src/sys/NEOE2  amd64
>Description:
Just like written in
http://lists.freebsd.org/pipermail/freebsd-bugs/2012-March/047943.html
I found it has no response and I have the almost same problem.

My device info using "usbconfig dump_device_desc":

ugen3.3: <USB2.0 WLAN ZyDAS> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON 
(500mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x00ff 
  bDeviceSubClass = 0x00ff 
  bDeviceProtocol = 0x00ff 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x0ace 
  idProduct = 0x1215 
  bcdDevice = 0x4810 
  iManufacturer = 0x0010  <ZyDAS>
  iProduct = 0x0020  <USB2.0 WLAN>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001 


In my case, I have to replug the wifi usb stick times and times again.
But I found only if I use openvpn, it works stable. 

>How-To-Repeat:
1.) Plug in the USB WLAN stick and make sure your internet is working
properly.
2.) Load a few pages or download a file at an average speed.

After all that, if you want to make it work again, you have to re-plug the
USB WLAN stick.

in /var/log/messages there is "zyd0: device timeout" 
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:
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