plustek: Scanner Sometimes Works
Subject:
Re: Scanner Sometimes Works
From:
"G. Jaeger" ####@####.####
Date:
31 Jan 2001 17:57:21 -0000
Message-Id: <14O1Z0-0DCte4C@fmrl02.sul.t-online.com>
Hi Paul,
good news so far, although they could be better ;-)
Anyway. I will try to improve that parport code, but
it's hard to make all different hardware work. I think
even the Linux parport driver has problems with the
port, as it reports 0x678 instead of the whole stuff like
for lp0:
>>kernel: parport0: PC-style at 0x378, irq 7 [SPP,PS2,EPP]
>>kernel: parport1: PC-style at 0x278 (0x678), irq 3, dma 3
Anyway, I hope the "workaround" is a solutionn you can live
with.
Gerhard
On Wed, 31 Jan 2001 02:14:32 -0600, Paul Boniol wrote:
>Thank you for your fast reply!
>
>I tried the "easier" option first (change the line and recompile and
>install the
>new driver). It was slightly better, but was still doing the same thing.
>
>I just tried the other option, swapping the cables (so lp0 is the
>scanner and
>lp1 is the printer) and changing the config files. It is working great!
>I tried several scans. I _could_ _not_ get it to fail!
>
>My lp0 is on the mother board, set for EPP.
>My lp1 is a SIIG 16-bit ISA card ("High-Speed IEEE 1284 EPP/ECP
> Parallel Port Adapter Fast Parallel I/O Parallel Pro Dual") set for
>EPP/ECP
> mode.
>So I can't be sure if it was the mode (EPP vs EPP/ECP), the difference
>in lp0 vs
>lp1 or the difference in the physical hardware.
>
>Thank you so much! I can use my scanner in Linux! I am so happy!
>
>Paul Boniol
>
>Jaeger, Gerhard wrote:
>
>> This looks like the problem we have on other configurations
>> and it seems, that this is communication problem which affects
>> some kind of parallelport-hardware. The problem is known, and
>> I hope to path this one day [;-)]
>>
>> I think there are two things you can try:
>> 1. simply connect the scanner to lp0 and the printer to lp1
>> 2. leave the scanner on lp1 and change the #if 0 define in the
>> file plustek_driver/h/plustek_scan.h (at line 72 or so) to #if 1.
>> Then recompile and reinstall the driver.
>>
>> Tell us if one of the points will help.
>> Gerhard
>>
>> On Die, 30 Jan 2001, Paul Boniol wrote:
>
>
><snip>
>
>>> I can sometimes get my parallel port scanner to work with Linux
>>> (I've had it for a
>>> while. Probably bought before I got into Linux.) but it takes quite
>>> a bit of playing
>>> to get it to work. It is a Plustek OpticPro 9636T. Connected to
>>> lp1, ioport
>>> 0x278, IRQ 3, DMA 3
>>
>
><snip>
>
>>> I had installed SANE 1.0.3-2 from the RPM when I installed Mandrake 7.2.
>>> I downloaded, compiled and installed the Plustek module (version
>>> 0-36-37)
>>
>
><snip>
>
>>> If I do
>>> scanimage -L
>>> it will list the scanner most of the time, but if I do it again, the
>>> command does not have any output until I unload the scanner
>>> module. (Message is `plustek:/dev/pt_drv' is a Plustek 9636T/
>>> 12000T Driver-Version 0.36 flatbed scanner)
>>>
>>> If I try
>>> scanimage --format PPM --mode Color > test.ppm
>>> it will usually give the message
>>> scanimage: no SANE devices found
>>> and occasionally
>>> scanimage: sane_start: Error during device I/O
>>> and once every now and then, it works.
>>
>
><snip>
>
>>> The results are similar under X using the xscanimage plugin for Gimp.
>>> Starting Gimp from a terminal, it will occasionally display the message
>>> xscanimage: no devices available.
>>> Most of the time (and always following the previous message) it will
>>> display
>>> Gtk-CRITICAL**: file gtkmain.c line 534 (gtk_main_quit): assertion
>>> 'main_loops != NULL' failed.
>>> Occasionally it will display the scanner interface. When it does, it
>>> will
>>> usually respond
>>> Failed to start scanner: Error during device I/O
>>> when you click scan or Preview Window and Acquire Preview.
>>> After it has scanned once, (either scan or preview), it will not scan
>>> again until closed, module removed, and the process started again.
>>
><snip>
>
>
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