From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: USB Printer does not work
Date: Sun, 04 Jan 2009 15:30:10 +0200
Message-ID: <4960B9E2.5080402@redhat.com>
References: <20090102175029.70fd5acf@pion.galaxy>
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Cc: kvm@vger.kernel.org
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Andr=C3=A9 Roth wrote:
> Hello List,
>
> I'm using kvm-82 and I'm trying to attach a HP 1200 per USB to my gue=
st system (Debian/lenny, 2.6.26-1-amd64). This works so far, the usblp =
module is loaded and I get a /dev/usb/lp0. I can print text/plain by ca=
tting text to the device.=20
>
> But using CUPS, the device is not detected due to a failing ioctl:
>
>    # strace /usr/lib/cups/backend/usb 2>&1 | grep error\\\|lp0 -i
>    ...
>    open("/dev/usb/lp0", O_RDWR|O_EXCL)     =3D 3
>    ioctl(3, SNDCTL_DSP_SYNC, 0x7fff90018760) =3D -1 EIO (Input/output=
 error)
>
> Specifying the device manually does not work either. On the host syst=
em
> this works without problems. The CPU is an Intel Core2 Quad Q9300.
>
> How can I further debug this ?
>  =20

An messages in dmesg?

Though I'm afraid I know very little about USB.  You might try the qemu=
=20
list.

--=20
error compiling committee.c: too many arguments to function