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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 06-01-2002, 01:24 AM   #1
LQ Newbie
Registered: Jun 2002
Location: England
Distribution: Slackware 12.2
Posts: 6

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Parallel port scanner

I'm trying to get a parallel-port scanner to work with kernel 2.4.16
on a P166 64Mb PC. The scanner is badged Philips PCA300PS PLUS but is
believed to be a Microtek 300dpi model and it has an Onspec 90c26 chip
onboard just behind the 25-way connector.

So far, I've downloaded a patch, Linux-2.4.16-ppscsi.patch.bz2 and
applied it to the kernel source with 'patch' (no errors reported) and
recompiled the kernel with parport, parport_pc, ppscsi and onscsi
as modules. I've also downloaded sane-backends-1.0.6. The new kernel
runs fine and I can insmod scsi_mod, sg, ppscsi and onscsi with no
problems (parport and parport_pc modules are already loaded when Linux
boots). This results in a file /proc/scsi/onscsi/1 which reports the
onscsi revision number and suggests that it's using a parallel port
at 0x378, which I believe to be correct for my hardware. However, when
I look in the file /proc/scsi/scsi, there's no mention of any device
other than my IDE CD-RW drive, which is using SCSI emulation (think
that's the right term!). Needless to say, I can't get past this point
and scanimage won't do anything when I try
scanimage -d microtek2:/dev/scanner or microtek2:/dev/sgf. Under the
doze 3.1 scanner driver, the scanner is reported to have SCSI ID=5, by
the way, and it works (relatively) well under this.

Please can anyone point out where I've gone wrong in all of this? I
seem to be totally stumped at the moment. Thanks!


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