device in use, modem timeouts???

[Leslie Dreyer Kalra (The Boss) <lbd@techiesinc.com>]

Hello, all...

I haven't fixed the problem I posted earlier, because I've got a
worse one...

Situation: HylaFAX 4.0pl1 (and pl0), Solaris 2.4, gcc 2.7.2,
Multitech 2834ZDX 28.8 fax modem.

Everything was working -- I could send and receive faxes, although
faxes sent from the server had repeated and squished pages. Then,
last weekend, something happened, but I don't know what.

Now, the fax server times out when trying to talk to the modem. A
faxstat gets me this, all the time: 

HylaFAX scheduler on main.techiesinc.com: Running
Modem cua/a (+1.610.398.2910): Initializing server

It never gets past initialization, and the server log looks like
it's timing out trying to talk to the modem:

Mar  4 18:02:41 main FaxQueuer[10472]: HylaFAX (tm) Version 4.0pl0
Mar  4 18:02:41 main FaxQueuer[10472]: HylaFAX (tm) Version 4.0pl0
Mar  4 18:02:41 main FaxQueuer[10472]: Copyright (c) 1990-1996 Sam Leffler
Mar  4 18:02:41 main FaxQueuer[10472]: Copyright (c) 1990-1996 Sam Leffler
Mar  4 18:02:41 main FaxQueuer[10472]: Copyright (c) 1991-1996 Silicon Graphics, Inc.
Mar  4 18:02:41 main FaxQueuer[10472]: Copyright (c) 1991-1996 Silicon Graphics, Inc.
Mar  4 18:03:16 main FaxGetty[10485]: OPEN /dev/cua/a
Mar  4 18:03:16 main FaxGetty[10485]: OPEN /dev/cua/a
Mar  4 18:03:17 main FaxGetty[10485]: Purge stale UUCP lock /var/spool/locks/LK.032.029.131072
Mar  4 18:03:17 main FaxGetty[10485]: Purge stale UUCP lock /var/spool/locks/LK.032.029.131072
Mar  4 18:03:17 main FaxGetty[10485]: DELAY 2600 ms
Mar  4 18:03:17 main FaxGetty[10485]: DELAY 2600 ms
Mar  4 18:03:20 main FaxGetty[10485]: <-- [15:ATE0V1Q0S0=0H0\r]
Mar  4 18:03:20 main FaxGetty[10485]: <-- [15:ATE0V1Q0S0=0H0\r]
Mar  4 18:03:25 main FaxGetty[10485]: MODEM <Timeout>
Mar  4 18:03:25 main FaxGetty[10485]: MODEM <Timeout>
Mar  4 18:03:25 main FaxGetty[10485]: DELAY 2600 ms
Mar  4 18:03:25 main FaxGetty[10485]: DELAY 2600 ms
Mar  4 18:03:38 main FaxQueuer[10472]: QUIT
Mar  4 18:03:38 main FaxQueuer[10472]: QUIT

This behavior persists through a reboot, a reinstall, installation of patch01 to
HylaFAX, and repeated restarts of the server. I even blew away /var/spool/fax and
reinstalled it, to make sure it wasn't some flag that I couldn't find somewhere.
I've also checked modem cabling and power-cycled the modem several times.

So, I thought it was the modem, but I can tip out to it with no problems, as long
as faxgetty isn't running. Isn't faxgetty supposed to get out of the way if I
want to tip out? It doesn't matter if it isn't, since I don't plan to use this
modem for anything but fax, but I'm looking for clues here. When I try to do
a faxaddmodem on that port, I get the following message:

Sorry, the device is currently in use by another program.

But, God help me, I can't see what other program (faxgetty is not running, nor
do I have a ttymon running on that port).

This problem seems to have started when a voice call came through on the fax
line (I think -- it might have been a failed fax call; I wasn't here at the time). 
The server went into a "receiving facsimile" status and stayed there for over a day. 
Ever since then, it's been unable to talk to the modem.

I saw in the troubleshooting guide that losing track of its FIFO special file could
make faxq confused. I may have removed FIFO.cua_a while trying to debug this
problem without stopping the server first. But would that problem survive a
reboot and an fsck??

I've been tearing my hair out over this one for several days now, not to mention
poring over the FAQ and the mailing list archive, but I can't make any headway
here. Someone please help!

Thanks in advance, oh, and please reply directly to me -- I don't subscribe
to the list, I just read the archives. I could include more information
in this e-mail, but it's long enough already...

Leslie Dreyer Kalra
Techies, Inc.
lbd@techiesinc.com