unable to connect to ttyS1

[packy@dardan.com (Packy Anderson)]

Hi.  I'm currently running a Debian 1.3 system, and I'm working on putting
together a Hamm system to replace it.  I'm trying to get a ppp connection
running on an external modem plugged into COM2 of the Hamm system and I'm
having no luck.

First, I defined the connection and then 'pon' to start the connection.  
No dice.  /var/log/ppp.log contained the following lines:

    pppd 2.3.5 started by root, uid 0
    tcgetattr: input/output error (5)
    Exit.

Ok, I went back a few steps.  I pulled down the PPP-HowTo and slog
through the advice it has (which isn't 100% the same as the default Hamm
setup).  I discovered that using Minicom, I didn't get any response to AT
commands sent to /dev/ttyS1.

I rebooted the system and use Lilo to boot MS-Dog.  Kermit saw a modem on
COM2 and I was even able to use it to dial my ISP and transfer some more
stuff to my new system.  So the modem/serial port/phone line *do* work.

Back to Linux (stopping by the BIOS setup on the way to note COM2's I/O
address and IRQ: 2f8, IRQ 3).  I did a 'setserial /dev/ttyS1':

    /dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3

I searched the mailing lists, and everybody else who was having similar
problems was using Plug-n-Pray internal modems.  No responses seemed to
apply to a built-in serial port.

So I'm stumped.  I'm guessing it's a conflict of some kind, but it's a
little too subtle for my experience level.

Any help would be greatly appreciated.

Thanks in advance,
-packy

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Packy Anderson                Dardan Web Assoc.                 518/266-1226
CEO/Webmaster                 PO Box 94                       www.dardan.com
packy@Dardan.com              Troy, NY 12181-0094
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