[ltp] Thinkpad T41 + minicom + Cisco Router

David Sudjiman linux-thinkpad@linux-thinkpad.org
Sat, 5 Nov 2005 18:06:57 +1100 (EST)


Hi All,

I just surprised to know that my thinkpad that I've been using for almost 
2 years does not come with a serial port.

I have several 25xx routers and would like to use minicom to connect to 
cisco router. I used to do this without problem using my previous toshiba 
tecra, but unfortunately not with this thinkpad t41.

I'm using RJ45-DB25 connector to connect the router and thinkpad using 
console cable.

What happen is I got 'offline' on the minicom and the screen does not show 
anything.

Here what I got.

nebuchadnezzar:/home/davids# cat /dev/ttyS0

nebuchadnezzar:/home/davids# cat /dev/ttyS1

nebuchadnezzar:/home/davids# cat /dev/ttyS2
cat: /dev/ttyS2: Input/output error
nebuchadnezzar:/home/davids# cat /dev/ttyS3
cat: /dev/ttyS3: Input/output error
nebuchadnezzar:/home/davids# cat /dev/ttyS4
cat: /dev/ttyS4: Input/output error

nebuchadnezzar:/home/davids# cat /proc/tty/driver/serial
serinfo:1.0 driver revision:
0: uart:NS16550A port:000003F8 irq:4 tx:3119 rx:0
1: uart:NS16550A port:000002F8 irq:3 tx:0 rx:0 CTS|DSR
2: uart:unknown port:000003E8 irq:4
3: uart:unknown port:000002E8 irq:3
4: uart:unknown port:00000000 irq:0
5: uart:unknown port:00000000 irq:0
6: uart:unknown port:00000000 irq:0
7: uart:unknown port:00000000 irq:0

and Yes, I did enable the serial option on the bios and also I believe I'm 
using the right minicom settings.

Please advise.

ps. Will it work If I buy RJ45-DB9 + DB9-USB?

thx
.dave

http://www.davidsudjiman.info