[Canoscan5000f-cvs] Re: [sane-devel] FW: Other new info

[tnorth@bluewin.ch]

>-- Message original --
>From: Frank Zago <fzago@austin.rr.com>
>To: tnorth@bluewin.ch
>CC: sane-devel@lists.alioth.debian.org, canoscan5000f-cvs@gna.org
>Subject: [Canoscan5000f-cvs] Re: [sane-devel] FW: Other new info
>Date: Fri, 23 Jul 2004 00:56:29 -0500
>
>
>Hi,
>
>> Humm...
>> I made some proofs ... I found several differences between my 
>> sane-find-scanner -v -v executed in root or by my usual user
>> As you can see in the 2 outputs I have pasted you forward, when i 
>> execute the command from my user the output gives an ipotethic chip for
>
>> the device, with no name of manufacturer or peripheral, instead, if I
do
>
>> the command from root, he gives me the names of the different 
>> peripherals, canon canoscan included, but he doesn't tell me anything

>> 'bout the chip.
>> Another try I did was to look into my hardware browser, installed in X,
>
>> and I found something else. It puts between the "system peripherals" a
>
>> peripheral which it calls "canon Canoscan", with an "unknown" tag at the
>
>> "driver" voice.
>> 
>
>"canon Canoscan" is reported by the device itself, as most usb devices do.
>a cat 
>/proc/bus/usb/devices will show you the same info. Same for "driver".
>
>Your scanner uses isochronous pipes to communicate. libusb does not yet
support
>
>isochronous transfers. The old kernel driver didn't either (AFAIK).
>Conclusion: there is no driver yet for your scanner.
>
>Now if you're really brave, there is a patch for libusb floating around
to
>
>support isochronous pipes. You can start a project to support your scanner.
>A 
>few people have done that, so it's possible. Henning has written a few web
>pages 
>on that subject.
>
>Sorry.
>
>Frank.

Hi,
Ok thanks for your precisions, we know where we are now.
I'll try and get that patch, maybe I can try and do something.
I continue bothering Canon SA to have specifications, and I thing when it
will be too much for them they'll release the specs (and the source ? let
me dream :) )

Thank you Frank, 

Thibault