cannot connect with serial modem on fc6

[axelmangr]

Hi all,

I am facing a problem with fc6 and my modem and I need your help.

I have an external serial modem with the following characteristics:
# 56 Kbps V.92 � V.90
# Serial Connection RS232
# V44 � V42 MNP2-4

With this modem I was able to connect using fc2 which I had prior to the installation I did during the weekend.

I have set the following at the modem commands (using kppp)

Pre-initialization delay: 100
Init String 1: ATZ
Init String 2 :
Post-initialization delay : 156
Dialing speed : 100
Response after initialization: OK
No tone detection : ATX3
Dialing string : ATDT
Connected Response: CONNECT
Busy Response: BUSY
No Carrier Response: NO CARRIER
No tone response: NO DIALTONE
Hangup command: +++ATH
Hangup response: OK
Modem query command: ATA
Ring response: RING Response
Response: CONNECT
DLP response: DIGITAL LINE DETECTED
Escape string: +++
Escape response: OK
Guard time: 255
Mute/low/high volume: M0L0 M1L1 M1L3


But kppp refuses to connect. It stays at Initializing modem forever.

I would appreciate any help

thanx
axelmangr

[axelmangr]

I forgot to mention that I have connected it to /dev/ttyS0.

Are you using a xen kernel or a normal kernel? Without a bit of tweaking the serial ports are not accessible whilst using the xen kernel.

[axelmangr]

By typing #uname -a I get:
Linux ... 2.6.18-1.2798.fc6xen...

Could you plz help me out with the tweaking

thanx
axel

You need to add an entry to your boot parameters in /boot/grub/grub.conf:

title Fedora Core (2.6.18-1.2869.fc6xen)
root (hd1,0)
kernel /xen.gz-2.6.18-1.2869.fc6
module /vmlinuz-2.6.18-1.2869.fc6xen ro root=/dev/VolGroup00/LogVol00 xencons=off

The above is mine and you can see the addition of "xencons=off". By default xen grabs the serial ports for use as a console for itself.

After rebooting the serial port(s) should be available - if not check that "serial-core" is loaded using lsmod/modprobe. You may even have to force the serial port with "setserial".

On second thoughts, if you don't need xen then just select the normal kernel from your grub menu when you boot then remove the xen kernel and your serial ports should work fine.

[axelmangr]

This worked just fine. Then you very much for the advice. I really appreciate it

axelmangr

PS sorry for the late response by I got held up at work all these days

Originally Posted by pjfg

You need to add an entry to your boot parameters in /boot/grub/grub.conf:

title Fedora Core (2.6.18-1.2869.fc6xen)
root (hd1,0)
kernel /xen.gz-2.6.18-1.2869.fc6
module /vmlinuz-2.6.18-1.2869.fc6xen ro root=/dev/VolGroup00/LogVol00 xencons=off

The above is mine and you can see the addition of "xencons=off". By default xen grabs the serial ports for use as a console for itself.

After rebooting the serial port(s) should be available - if not check that "serial-core" is loaded using lsmod/modprobe. You may even have to force the serial port with "setserial".

[spotvt01]

pjfg,

do you have some advice on how to get the serial port working for domu and dom0 under xen? I guess I could tell xen to use tty9 or something ... but I'm not quite sure how to do this ... any help would be appreciated

-Chris