Modem help

Robert L Cochran cochranb at
Sat Feb 23 00:51:24 UTC 2008

>>> Also, if you put the modem into your box and you can see a TTY appear in
>>> the boot dmesg(dmesg|grep -i tty), then linux has recognized and
>>> assigned it to a serial interface and you should be good to go.
>>> Sean
>> My modem is recognized. It is a different card than before.
>>   $dmesg | grep -i tty
>> console [tty0] enabled
>> serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>> serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
>> 00:05: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
The above is not proof that a modem is recognized. It is proof that two
serial ports exist on the system. One port may actually be a modem, or
it may not.

> I see two serial ports, does your machine have two physical serial
> ports.  Are they conflicting with your modem perchance?
Does the user have permission to use serial ports? I think you have to
be  member of the uucp group to read/write to a serial port?

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