# Re: UMAX Astra 1200S seems to hang on all commands

Nathan Kennedy (nathan@mail.puget.net)
Tue, 07 Dec 1999 11:58:59 -0800

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Well things have changed a little bit. I decided to install the 2940UW I had laying
around (don't know why I didn't to that in the first place). I now have a bit
stranger of a problem. I can get past the initialization, but when the scanning
finishes and it tries to release the scanner it freezes. Could this be the scsi
disconnect issue? If so where is the information on enabling/disabling this feature?
TNX to the group you've been great guys.

Nathan %-)

Mark Brown wrote:

> Hmm - I was plagued with problems with my 2920 on a fast (200+ MHz) machine.
> I was always having the scsi bus freeze and lock (usually under heavy i/o load),
> not only with the penguin-os, but even using
> win-dos95 :-) I tried different disks, cables and termination, but I finally gave
> up on the card.
> Not too sure if I just had a bad card..... or if this is similar to what you are
> experiencing.
> The 2940 is a much-much better card!
>
> Lots of luck.
>
> Mark
>
> Rod Pike wrote:
>
> > Sorry if I'm repeating questions, I don't recall seeing the beginning of the
> > thread.
> >
> > Is the 2920 terminated?
> > Make sure you haven't left the ZIP terminator switched on in addition to the UMAX
> > supplied terminator.
> >
> > It sounds like you are using the cable that came with the ZIP. What's the other
> > cable you are using, I'm not familiar with the 2920 does it use a 25 pin D Sub,
> > a 50 pin Centronics type or a 50 pin High density?
> >
> > Try simplifying your SCSI cabling. Does it work without the ZIP drive attached
> > using the shortest cable and the supplied terminator?. If this passes or fails,
> > try the longer cable. If both work or not try adding the ZIP to the end of the
> > buss and using the internal termination in the ZIP to terminate the buss. I
> > think the UMAX supplied terminator is passive, the one in the ZIP is active and
> > should do a better job.
> >
> > I have a ZIP and UMAX 1220S as well. I would put the ZIP at the end of the buss
> > instead of the scanner. I've tried other configurations and "seem" to remember
> > having problems. I also "think" I had problems with the UMAX supplied cable but
> > it's been a while and it may have been due to another device causing problems. I
> > also tend to have alot of cabling/devices in my setup which can be problematic.
> > You tend to get alot of discontinuities on the bus and different cabling with
> > different impedances which can degrade the buss. Your setup doesn't sound like
> > it should be a problem as long as the terminators are working properly which the
> > above tests may help determine.
> >
> > I'm currently running 4 internal devices on a 5' ribbon and 3 external devices
> > with about 8' of cable using an Adaptec 2940 and it's working (allways knock on
> > wood). The scanner is the first external device on the buss, then the ZIP and
> > finally an actively terminated hard drive is on the end of the buss.
> >
> > Hope that helps. Good luck
> >
> > Nathan Kennedy wrote:
> >
> > > The scsi bus is terminated at the scanner using the terminator that came with
> > > it. The cable situation is a little long, but under the 20 ft.
> > > specification. I have on 6 foot cable going from the scsi card to the zip
> > > drive, and a three foot cord from the zip drive to the scanner.
> > >
> > > Nathan %-)
> > >
> > > Oliver Rauch wrote:
> > >
> > > > Nathan Kennedy wrote:
> > > >
> > > > > I just bought a brand new UMAX Astra 1200S scanner specifically for use
> > > > > with sane. However it seems that it hangs on the initialization of the
> > > > > scanner. I am using the card on an adaptec 2920 PCI card with a zip
> > > > > drive in-line with the scanner.
> > > > >
> > > > > I have run the scanimage -T with a dll debug level of 128. Everything
> > > > > goes fine, until it reaches the do_calibration command. Then it just
> > > > > sits waiting for the scanner. I can usually <ctrl> c out of it, but any
> > > > > attempt to unload the sg module and fdomain module results in a total
> > > > > system lock up.
> > > > >
> > > > > Any help with this would be great. I am really looking forward to
> > > > > removing windows off of my computer.
> > > >
> > > > Hi Nathan,
> > > >
> > > > is the scsi bus terminated correct on both ends of the bus,
> > > > how long is the scsi bus (all scsi cables together)?
> > > > is the driver for your scsi controller up to date?
> > > > Is disconnect reconnect disabled?
> > > >
> > > > Bye
> > > > Oliver
> > > >
> > > > --
> > > > Homepage: http://www.wolfsburg.de/~rauch
> > > > sane-umax: http://www.wolfsburg.de/~rauch/sane/sane-umax.html
> > > > xsane: http://www.wolfsburg.de/~rauch/sane/sane-xsane.html
> > > > E-Mail: mailto:Oliver.Rauch@Wolfsburg.DE
> > > >
> > > > --
> > > > Source code, list archive, and docs: http://www.mostang.com/sane/
> > > > To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
> > >
> > > --
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> >
> > --
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>
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