urtw0: could not allocate USB transfers

Etienne Robillard erob at gthcfoundation.org
Fri Feb 25 11:47:14 UTC 2011

On 25/02/11 06:18 AM, Bernhard Schmidt wrote:
> On Friday, February 25, 2011 11:03:04 Etienne Robillard wrote:
>> On 25/02/11 04:11 AM, Bernhard Schmidt wrote:
>>> On Thursday, February 24, 2011 21:51:23 joseph wrote:
>>>> Hello,
>>>> i decided to get my laptop wlan via usb because my internal device isn't 
>>>> supported yet.
>>>> The usb device is a logilink WL0006 unit its vendorid is 0x0bda and the 
>>>> productid says 0x8187.
>>>> My search results say that this device depends on a RTL8187 chipset.
>>>> I tried both, load the kernel module at boot time and compile kernel 
>>>> withe urtw, but i get the same output at dmesg
>>>> device_attach: urtw0 attach returned 6
>>>> urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> 
>>>> on usbus3
>>>> urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE
>>>> device_attach: urtw0 attach returned 6
>>>> im running FreeBSD 8.1-RELEASE-p2 amd64.
>>>> What might be the reason for this error?
>>>> Thanks for all hints.
>>> Well, I have no clue about USB.. but this smells like one of the
>>> endpoints is 'not there'. At least I can't find any reference to
>>> it in the Linux driver. Wanna give attached patch a shot?
>> Hi Bernard,
>> For rt287x based cards, you can try using rt28700 chipset instead of
>> urtw0 on
>> FreeBSD 8.
>> The former is not in the stable src tree, but could be retrieved from here:
>> https://gthc.org/distfiles/freebsd/rt2870_fbsd8.tar.gz
>> Any takers to make module rt28700 (if_rt2870) officially part of the
>> FreeBSD src tree?
> I'm a bit confused now, shouldn't the rt2870 be supported by run(4)? On
> a site-note, this is Ralink chipset not a Realtek one.

I believe this is a different implementation for RT8187 usb network
adapters than
run(4). However in my view I found urtw0 buggy, but would certainly take
a look at run(4) to
compare the results with wireless networking agaisnt the other driver


Etienne Robillard

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