plustek: Thread: Black images from Umax 3450 on PowerPC Debian

	I am using the latest sane from Debian, 1.0.13, in my Apple
iBook and in my Apple PowerMac.  I had used it before in another iBook
with a binary I compiled from CVS, and my Umax 3450 worked just fine.

	Strange thing is I get only black images now.  Tips, ideas?


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On Wed, 07 Apr 2004 23:45:33 -0300, Leandro Guimarães Faria Corsetti
Dutra wrote:

> 	I am using the latest sane from Debian, 1.0.13, in my Apple
> iBook and in my Apple PowerMac.  I had used it before in another iBook
> with a binary I compiled from CVS, and my Umax 3450 worked just fine.
> 
> 	Strange thing is I get only black images now.  Tips, ideas?

	No ideas by no one?

	Please...


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Leandro Guimarães Faria Corsetti Dutra           +55 (11) 5685 2219
Av Sgto Geraldo Santana, 1100 6/71               +55 (11) 5686 9607
04.674-000  São Paulo, SP                                    BRASIL
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On Wed, 07 Apr 2004 23:45:33 -0300, Leandro Guimarães Faria Corsetti
Dutra wrote:

> I am using the latest sane from Debian, 1.0.13, in my Apple
> iBook and in my Apple PowerMac.  I had used it before in another iBook
> with a binary I compiled from CVS, and my Umax 3450 worked just fine.
> 
> 	Strange thing is I get only black images now.  Tips, ideas?

	Should I file a bug, since no one answered?


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Leandro Guimarães Faria Corsetti Dutra           +55 (11) 5685 2219
Av Sgto Geraldo Santana, 1100 6/71               +55 (11) 5686 9607
04.674-000  São Paulo, SP                                    BRASIL
http://br.geocities.com./lgcdutra/

On Friday 14 May 2004 04:41, Leandro Guimarães Faria Corsetti Dutra wrote:>
> On Wed, 07 Apr 2004 23:45:33 -0300, Leandro Guimarães Faria Corsetti
>
> Dutra wrote:
> > I am using the latest sane from Debian, 1.0.13, in my Apple
> > iBook and in my Apple PowerMac.  I had used it before in another iBook
> > with a binary I compiled from CVS, and my Umax 3450 worked just fine.
> >
> > 	Strange thing is I get only black images now.  Tips, ideas?
>
> 	Should I file a bug, since no one answered?

Hmmm, you can do so, but I'm sure, that probably nobody will answer
or fix it, as the PPC platform is not that spreaded :-(
Could you provide more information please, as I missed the starting thread:
- what OS (if linux which kernel - libusb or scanner.o)
- what box
- last working version
- probably a log file
- is the lamp switched on?

Ciao,
  Gerhard

On Fri, 14 May 2004 09:12:37 +0200, Gerhard Jaeger wrote:

> you can do so, but I'm sure, that probably nobody will answer or fix
> it, as the PPC platform is not that spreaded :-(

	Blame Apple's proprietariness... but yet it is so nice...


> Could you provide more information please, as I missed the starting
> thread: - what OS (if linux which kernel - libusb or scanner.o)

	It is Debian GNU/Linux testing with some unstable packages.
SANE is version 1.0.13 from Debian packages.


> - what box

	It is an Apple iBook Graphite, G3 466MHz with 640 MiB RAM.
The Umax 3450 is USB-connected.


> - last working version

	Another iBook, this one a Lime 366MHz with 576 MiB RAM, worked
nicely with packages compiled from CVS.


> - probably a log file

	Do you mean just the output of something like scanimage, or
something under /var/log... there are no error messages I could find
yet.


> - is the lamp switched on?

	Hm, can't check that now, am using it remotely... it used to.
Tomorrow I hope I'll be able to check it.


-- 
Leandro Guimarães Faria Corsetti Dutra           +55 (11) 5685 2219
Av Sgto Geraldo Santana, 1100 6/71               +55 (11) 5686 9607
04.674-000  São Paulo, SP                                    BRASIL
http://br.geocities.com./lgcdutra/

	A solution, and missing details.


On Fri, 14 May 2004 09:12:37 +0200, Gerhard Jaeger wrote:

> - what OS (if linux which kernel - libusb or scanner.o)

	I forgot mentioning it's running the stock Debian linux
2.4.22-powerpc kernel.


> - last working version

	That was a 1.0.13 I compiled from CVS before it was released,
but that was another box if very similarly configured.

	Now it has worked, for I have upgraded libsane and sane-utils
to 1.0.14 from Debian testing.  Interestingly, sane itself is still
1.0.12 there...


> - is the lamp switched on?

	Definetly yes.

	Two nasty details yet:

1) Visualisation doesn't work properly.  It does get an image, but
when it finishes constructing it on screen it refreshs, and the
refresh makes it truly bad, very grained, even if some parts of the
image remain good.

	Would a screenshot of this help?


2) Sometimes -- haven't been able to discern a pattern yet --
digitalisation will make some ugly if not too loud noises when the
lamp reaches the end of the scan bed, just before starting to return
to its rest position.


-- 
Leandro Guimarães Faria Corsetti Dutra           +55 (11) 5685 2219
Av Sgto Geraldo Santana, 1100 6/71               +55 (11) 5686 9607
04.674-000  São Paulo, SP                                    BRASIL
http://br.geocities.com./lgcdutra/

Hi Leandro,

On Monday 17 May 2004 15:07, Leandro Guimarães Faria Corsetti Dutra wrote:
> A solution, and missing details.
[SNIPSNAP]
> 	Now it has worked, for I have upgraded libsane and sane-utils
> to 1.0.14 from Debian testing.  Interestingly, sane itself is still
> 1.0.12 there...

What does this mean? Is it working now? I noticed, that I changed
something in the calibration code for big-endian machines w/o testing.

> 	Two nasty details yet:
>
> 1) Visualisation doesn't work properly.  It does get an image, but
> when it finishes constructing it on screen it refreshs, and the
> refresh makes it truly bad, very grained, even if some parts of the
> image remain good.

Hmmm, no idea, where this comes from, please try another frontend.

> 	Would a screenshot of this help?
Probably not.

> 2) Sometimes -- haven't been able to discern a pattern yet --
> digitalisation will make some ugly if not too loud noises when the
> lamp reaches the end of the scan bed, just before starting to return
> to its rest position.

That's somewhat known, but I have no solution for that, as it's not
reproducible :-(

Ciao,
  Gerhard

Em Qua, 2004-05-26 às 10:43, Gerhard Jaeger escreveu:
> 
> On Monday 17 May 2004 15:07, Leandro Guimarães Faria Corsetti Dutra wrote:
> > 	Now it has worked, for I have upgraded libsane and sane-utils
> > to 1.0.14 from Debian testing.  Interestingly, sane itself is still
> > 1.0.12 there...
> 
> What does this mean? Is it working now?

	Yep.


> I noticed, that I changed
> something in the calibration code for big-endian machines w/o testing.

	Touché!


> > 1) Visualisation doesn't work properly.  It does get an image, but
> > when it finishes constructing it on screen it refreshs, and the
> > refresh makes it truly bad, very grained, even if some parts of the
> > image remain good.
> 
> Hmmm, no idea, where this comes from, please try another frontend.

	Will do.


> > 	Would a screenshot of this help?
> Probably not.

	Pity.


> > 2) Sometimes -- haven't been able to discern a pattern yet --
> > digitalisation will make some ugly if not too loud noises when the
> > lamp reaches the end of the scan bed, just before starting to return
> > to its rest position.
> 
> That's somewhat known, but I have no solution for that, as it's not
> reproducible :-(

	Any information I could provide would be helpful?


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