[sane-devel] SANE; scanning with LIDE series works under Win, NOT under Lx

Sat Jun 20 22:49:53 UTC 2015

Dear Cedric,

Please take into consideration that I am not a SANE expert, nor a Canon 
LIDE expert.

SANE is a modular structure. The dirty under-the-hood work that scanner 
drivers do to get a scanner working, is abstracted away to "SANE 
drivers" (i.e. backends).
Everything else is built on top of those sane backends, through a very 
simple API layer.

If scanimage from a terminal works for your scanner, then your scanner 
works with SANE.
Your problem is not scanner related.

Google is your friend.
Have you tried these:
http://askubuntu.com/questions/599694/scanimage-works-but-xsane-or-any-other-ui-does-not
Or the more commented: 
http://unix.stackexchange.com/questions/191777/scanimage-works-but-xsane-or-any-other-ui-does-not

Both refer to a problem with the way linux handles USB. This has indeed 
changed a few times over the years, causing un-linux like situations 
where something works one time, and then stops working (e.g. after an 
update).

The reason you are not getting a response from this list, is probably 
that your problem is not SANE-related.
You may not be a techie now, but you'll get sucked into it sooner or 
later. Use Google.

Best regards,

Stijn

On 20-06-15 21:00, "Cedric Bhihe (毕生泰)" wrote:
> A good day to everybody.
>
> I keep reading about flatbed scanners from Canon (in particular of the 
> LIDE
> series) not working when USB-plugged in under Linux but working fine under
> Windows. I have exactly the same problem with a LIDE 25 and an HP 4400c
> scanner.
>
> Yes, both scanners are old but they are in excellent condition, (very low
> mileage + many years forgotten somewhere in their original packing).Â  
> Both
> work flawlessly under legacy Windows XP as well as under Win 7 on 
> different
> machines, including one that runs a dual Lx/Win boot.
>
> As far as 'sane' front-ends go, I downloaded and installed two from 
> the Ubuntu
> Software Center and tried them repeatedly.
> - simple scan 3.12.1
> - xsane 0.998 whose author I even contacted, Oliver Rauch, hoping for 
> pointers.
> Unfortunately I got no answer.
>
> Nothing seems to work under Linux with a 'sane' based gui for those 
> two scanners,
> BUT:
> -1- it was not always the case. Up until about 8-10 weeks ago, xsane 
> used to work
> flawlessly for me. Nothing in my system (hard and soft) changed since 
> then,
> apart from regular stable and security related updates as provided by 
> Canonical.
> -2- I can scan w/o an itch from my Ubuntu terminal using 'scanimage'. 
> I do that
> on a daily basis with no errors.
>
> I already wrote about that here, about 40 days ago, and got a 
> resounding silence
> Â for an answer. No idea why.
>
> Anyway I believe this is completely unrelated to the USB3 issue that 
> is now widely
> publicized. This probably has to do with some change in the kernel AND 
> the way
> the two afore mentionned 'sane' based gui packages handle 
> communication with
> the scanner or the daemon that handles USB comm. or some' else.
> Something happened about 8 to 10 weeks go and I don't know what it is.
>
> Since I am no techie, I am stuck, but at least 'scanimage' on terminal 
> works.
> The downside with scanimage is despite all available options
> - no preview is available (pre-processing),
> - no collating batch (multi-page) scans (post-processing) is possible,
> - there is no saving scans directly as pdf (post-processing).
>
> -ced
>
> Ubuntu 14.04.2 v3.16.0-41-generic x86_64
> on Intel(R) Core(TM)2 Duo CPU T9300 @ 2.50GHz
> Motherboard 30C5 Version KBC v.71.36 by HP
> BIOS HP version: 68MVD Ver. F.15 (2008.02.12)
>
> Â
> ------------------------------------------------------------------------
>
> On 20/06/15 14:00, sane-devel-request at lists.alioth.debian.org wrote:
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>>
>> Today's Topics:
>>
>>     1. Re: Canon LIDE 110 + USB3 (Marc Cousin)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 19 Jun 2015 15:57:03 +0200
>> From: Marc Cousin<cousinmarc at gmail.com>
>> To: Heinz Wiesinger<HMWiesinger at liwjatan.at>
>> Cc:sane-devel at lists.alioth.debian.org
>> Subject: Re: [sane-devel] Canon LIDE 110 + USB3
>> Message-ID: <478249274.zdL7Kf9XdV at marco>
>> Content-Type: text/plain; charset="utf-8"
>>
>> On Thursday 30 April 2015 13:15:17 Marc Cousin wrote:
>>> On 18/04/2015 18:46, Marc Cousin wrote:
>>>> On 18/04/2015 18:27, Marc Cousin wrote:
>>>>> On 18/04/2015 12:35, Heinz Wiesinger wrote:
>>>>>> On Saturday 18 April 2015 10:58:31 Marc Cousin wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I've got a brand new computer with USB3 all over the place, and cannot
>>>>>>> use my "old" LIDE 110 with it, even with a git version. The scanner is
>>>>>>> still working, as it works when connecter to my older laptop, through
>>>>>>> USB2. It doesn't work with a git checkout from a few minutes ago.
>>>>>>>
>>>>>>> I see that some drivers have received some patches to work around
>>>>>>> problems with USB 3. Is there something to be done to the genesys
>>>>>>> driver
>>>>>>> too ? What can I provide to help solving this ?
>>>>>> Hi,
>>>>>>
>>>>>> I have the same problem with the LIDE 210. In a message from last
>>>>>> month, Stef
>>>>>> asked for usbpcap log from windows (see
>>>>>> http://lists.alioth.debian.org/pipermail/sane-devel/2015-March/033202.ht
>>>>>> ml
>>>>>>
>>>>>>    for details). Unfortunately I don't have access to a Windows
>>>>>>
>>>>>> computer having
>>>>>> USB3 ports. So if you have and you could provide those logs, it might
>>>>>> help in
>>>>>> figuring out what's going wrong.
>>>>>>
>>>>>> Grs,
>>>>>> Heinz
>>>>> I have no windows installed. I have one in a KVM box, should I give it a
>>>>> try ?
>>>> I gave it a try, in the KVM windows, scanning works. It is seen as USB2
>>>> from windows though, I don't know if this is of any importance.
>>> So,
>>>
>>> Is this dump (from a virtulized windows seeing USB2) interesting ?
>>>
>>> Regards
>> Hi,
>>
>> I'm back on this, after a while away from home. Is there anything I can
>> provide ?
>>
>> To sum up:
>>
>> - The LIDE110 doesn't work from SANE (git checkout from 10 minutes ago) +
>> Linux (4.0.5): I only have problem with the scanner. Any other periphal I
>> plugged in worked ok (mouse, usb card reader, usb disk drive, keyboard)?
>> - It works in Win7, virtualized in KVM, using the exact same USB3 port (seen
>> as USB2 from Windows)
>> - It almost works when all debug traces are activated in SANE (it fails much
>> later)
>>
>> I am willing to capture anything you want, just tell me (and give me pointers
>> to how to do the requested captures). I could even (but as a last resort, as I
>> don't have space for it right now) install a Win7 on this machine.
>>
>> Regards
>>
>>
>>
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>>
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>> ------------------------------
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>> End of sane-devel Digest, Vol 120, Issue 20
>> *******************************************
>>
>
>
>

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