When I tried to hunt this donw, I discovered problems with USB and Ubuntu
7.04 and SUSE 10.1
At least on Suse, it's helped by setting HAVE_USB_INTERRUPT_READ to off.
Hunting things down, there is a spate of reports on scanner problems and
kernels built with USB_SUSPEND (as in Ubuntu 7.04).
http://lists.alioth.debian.org/pipermail/sane-devel/2007-June.txt.gz has
this entry:
From william at gallaf.net Wed Jun 6 21:40:07 2007
From: william at gallaf.net (William Gallafent)
Date: Wed, 6 Jun 2007 22:40:07 +0100
Subject: [sane-devel] XSANE DOESN'T CAUSE SCANNER TO SCAN
In-Reply-To: <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
Message-ID: <[EMAIL PROTECTED]>
On Monday 04 June 2007 22:38:42 th wrote:
> I have xsane on by Xubuntu 7.04. I have a Canon CanoScan
> N124OU, and xsane recongnises this device but when I press
> scan, it doesn't cause the scanner to respond or scan image,
> instead it just shows a progressive black screen. I have read
> documentation on this, but my problem doesn't seem to be
> covered.
This is due to Ubuntu (and variants) 7.04 being shipped with a
kernel which has USB_SUSPEND enabled. See this bug, which
has "medium" importance:
https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/85488
So I'm trying to find the problem, but could use help. I don't think having
a USB
adapter without an ID chip is a problem. We've addressed that problem
before.
Paul Alfille
On 8/21/07, Paul Alfille <[EMAIL PROTECTED]> wrote:
>
>
> ---------- Forwarded message ----------
> From: Michał Kowalczuk
> Date: Aug 19, 2007 12:21 PM
> Subject: owfs and MP00200
>
> Hello,
> I'm trying to use owfs with adapter made by Polish electronics company
> MeraProjekt: http://www.meraprojekt.com.pl/mp00200.html
> Unfortunately, owfs (under Linux, Ubuntu 7.04) seems to not support this
> adapter. The only difference between MP00200 and DS9490R is lack of DS2401
> in
> MP00200. Is this serial number chip neccesary for owfs to initialize
> ds9490
> adapter properly? Now when I start owfs with MP00200 connected to my USB
> port
> (and no devices on 1-wire bus) I get something like that:
>
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