Re: Modem Inaccessible

Peter
2006-07-19T06:47:16Z

OK, I do not have anymore a /dev/ttyS0. Why, I have no idea. And that seems to
be the reason that the modem does not respond.

Now I created the device node with mknod /dev/ttyS0 c 4 64, with permissions
set to root:tty.

Then I get
setserial /dev/ttyS0 -a
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test auto_irq

and the modem responds to minicom, microcom and fax receive/send.

ray@comarre.com said:
>> Fedora4 does not run setserial neither does DSL.
> How do you know? Did you grep for "setserial" in the appropriate directory
> (probably /etc/init.d)? If not, how did you check this?

That is exactly what I did, grep for setserial in the appropriate directories.

Yes with kernels 2.4.31, 2.6.14 I had a /dev/ttys0, however, not anymore with
kernel 2.6.20. With kernel 2.17 modem responded to a setting of a symlink to
/dev/tts/1.

This symlink I kept with kernel 2.6.20 and the trouble started.

Just now I resolved the issue. In /etc/udev/rules.d/modem.rules I changed the
setting from NAME="/dev/tts/1" to NAME="ttyS0". Then running rc.udev and I
have my
/dev/ttyS0 back.

ls -l /dev/modem
lrwxrwxrwx 1 root root 5 2006-07-19 14:26 /dev/modem -> ttyS0

Much appreciated your help.

Regards