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Date: Sat, 4 Jul 2009 09:14:44 +0200
From: Patrick Lamaiziere <patfbsd@davenulle.org>
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Cc: Sam Leffler <sam@freebsd.org>, Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: ulpt problem (USB_ERR_IOERROR)
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Le Fri, 03 Jul 2009 11:25:22 -0700,
Sam Leffler <sam@freebsd.org> a =E9crit :

> > 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=20
> > 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=3D0xc3176480
> > 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
> >  =20
>=20
> This looks a bit like an issue I'm about to start chasing where FS=20
> 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?

No hub at all. May be it's related to the usb chipset but I do not have
any problem with umass.