ulpt problem (USB_ERR_IOERROR)

[Sam Leffler]

Patrick Lamaiziere wrote:
> Le Fri, 3 Jul 2009 17:58:34 +0200,
> Hans Petter Selasky <hselasky at c2i.net> a écrit :
>
>   
>>> The printer is a Brother HL-1430 (working fine under FreeBSD since
>>> FreeBSD 4.X)
>>>
>>>       
>> Did you try both:
>>
>> /dev/unlpt0 and /dev/ulpt0
>>     
>
> I tried : with ulpt0 the printer does not print anything (With
> previous FreeBSD I used unlpt0): the reset disconnects the printer.
>
> ulpt0: <vendor 0x04f9 product 0x001a, class 0/0, rev 1.00/1.00, addr 2>
> on usbus0 
> ulpt_attach:562: setting alternate config number: 0
> ulpt0: using bi-directional mode
> ugen0.2: <vendor 0x04f9> at usbus0 (disconnected)
> ulpt0: at uhub0, port 1, addr 2 (disconnected)
> ulpt_detach:653: sc=0xc3176480
> ugen0.2: <vendor 0x04f9> at usbus0
> ulpt0: <vendor 0x04f9 product 0x001a, class 0/0, rev 1.00/1.00, addr 2>
> on usbus0 ulpt_attach:562: setting alternate config number: 0
> ulpt0: using bi-directional mode
>   

This looks a bit like an issue I'm about to start chasing where FS 
devices fed through a HS hub disconnect "spontaneously" under load.  It 
doesn't look like it but to be sure there are no hubs between the host 
and the printer?

    Sam