Re: urtwn driver for Edimax EW-7811U WLAN nano USB Adapter

On 02/10/14 13:21, Alexey Dokuchaev wrote:
> On Tue, Oct 15, 2013 at 11:13:56PM -0700, Rui Paulo wrote:
>> On 8 Oct 2013, at 10:41, Julian H. Stacey <jhs@berklix.com> wrote:
>>> I too am seeing
>>> 	urtwn0: timeout waiting for checksum report
>>
>> Sorry, this is a know problem that I haven't been able to figure out...
>> It probably exists in the OpenBSD driver as well. Usually retrying works.
>
> To augment this a bit: I also came across one of these dongles (vendor
> 0x0bda product 0x8176) that gave me this "timeout waiting for checksum
> report" message.  Retrying didn't help, but plugging the dongle out and
> then back in did.  After powercycling the machine, I had to replug it
> again.  Once replugged, the dongle seems to work fine (I rebuilt kernel
> and some ports via NFS over it thus far).
>
> This suggests that the driver (or more generic part of the USB stack)
> does not initialize something correctly, while full plug-and-play thing
> does it.  Any ideas?
>
> ./danfe

Hi,

Looking at output from "usbdump -i usbusX -f Y" might give you some 
clues. Else have you tried "usbconfig -d X.Y reset".

--HPS

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