# Re: Mustek 1200SP: Missing Lines

Joachim Woll (woll@physik.uni-kassel.de)
Thu, 30 Oct 1997 23:37:27 +0100

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Hi there,
first of all IŽd like to thank for the response to my posting last week.
Unfortunately I've to say that my Scanner still is not working properly,
but I want to resume...

-->The DTC436E SCSI-Card is not recognized by the Kernel.

becka@rz.uni-duesseldorf.de wrote:
>Known problem ... the card is ... *#$?%
...yes!!
>However there have recently been some reports that it can be made working
>somehow ...
Would be great. Do you remember where you read these reports?

Michael K. Johnson wrote:
>If I recall correctly, that card is just an adaptec 152x clone
>without the bios. You just have to give arguments to the 152x
>driver to tell it where to find the card. DTC tested this for
>us with Red Hat 4.2, with 2.0.30, and were successful.
No! I guess you mean the DTCT 3x80,329x.These Cards are
adaptec 1540 compatible. And I read in the meantime in the
german magazine iX that the DTC436E is definitely *not*
supported.

-->MUSTEK 1200SP hooked to the adaptec 2940

David.Mosberger@acm.org wrote:
>Not quite, unfortunately. What I see are shifts, not missing lines.
>Still, the problems might be related.
Could be. In my case there are missing lines -sometimes up to 10
at a time.

becka@rz.uni-duesseldorf.de wrote:
>> These problems are described in sane-mustek, but applying the fixes
>> through mustek.conf did not change anything.
>Setting the strip-height should affect the frequency of the stripes.
Yes it does. A smaller value leads to a higher frequency.

>> So I guess that Problem is due to a corrupt data-transfer because of a
>> timing problem or so.
>I do not think so, as it always seems to be at the beginning/end of a
>transferred buffer. So I think the last alignment between the current and the
>next buffer is not quite right. I don't know, if this is a HW problem, or if
>we are doing something wrong.
You are right. This problem occurs at every buffer boundary.

>However the main developer of the Mustek drivers semms to be able to reproduce
>this problems recently, so maybe there is hope ...
:-)

Joachim.

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