Cannot use /dev/ttyS0

[andrea]

Hi,
I installed kubuntu 6.06 LTS on my ToshibaLaptop (Satellite4090) few days ago after it was released.

My kermit program, sudo apt-get install ckermit, cannot connect to /dev/ttyS0.

I have this:

sudo kermit -y kermit.ini -s vbscb.crc
/dev/ttyS0 is not a terminal device
?SET SPEED has no effect without prior SET LINE
Return to your local Kermit and give a RECEIVE command.

KERMIT READY TO SEND...
^C... @-#Y3~^>J)0___N"U1@G

my kermit.ini looks like this:

set line /dev/ttyS0
set carrier-watch off
#set flow-control rts/cts
set flow-control none
set speed 57600

my /etc/serial.conf

/dev/ttyS0 port 0x3f8 irq 4 autoconfig

in fact sudo setserial /dev/ttyS0 shows
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4

more infos:
ls -al /dev/ttyS0
crw-rw---- 1 root dialout 4, 64 2006-06-05 11:26 /dev/ttyS0

dmesg | grep ttyS0
[ 3309.177769] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 3309.189348] 00:0e: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A


I have to say that my PC and my ttyS0 worked with Debian few weeks ago and with FreeBSD6.1 until few days ago.

After installing kubuntu I cannot make the serial port work


Please help, I will give more infos if you need.


Thanks in advance,