external modem problem
I'm having a problem with an external US Robotics 56K Faxmodem. I'm
running a Potato system with the 2.2.12 kernel on a Toshiba Tecra
700CT. I have never gotten the modem to work with Linux before, but I
have used it with Windows.
The problem is this: when I run Minicom (or anything else that requires
the modem) the modem is unresponsive. The TR light -- Data Terminal
Ready light -- gets lit up and the modem won't "talk" to the software.
The same light also goes on when I run statserial to check the serial
port.
However, there is definitely some communication between the OS and the
modem. When I exit Minicom or statserial the TR light goes off. Also,
when I re-initialize the modem within Minicom the light temporarily goes
off. Also, when I updated my ppp connection with pppconfig I told it to
search for all available modems and it found the modem (which is
attached to /dev/ttyS0); when it was searching, all the lights on the
modem briefly flashed.
I've checked the dip switches on the modem and they seem fine -- they
are set to the factory default, which includes the DTR switch off (I've
tested it with it on as well; no good). The serial port, /dev/ttyS0,
also seems fine. I have support for the serial port loaded as a module
and when I type lsmod it shows up. I don't think I have a getty running
on the serial port (I checked /dev/ttyS0). The info from setserial
seems fine and I don't think that I have any conflicts (from
/proc/interrupts).
I'm stumped and any help would be much appreciated, especially since
I've managed to disable my PCMCIA modem (which may soon be the subject
of another post).
Thanks.
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