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Old 04-05-2004, 08:55 PM   #1
Registered: Mar 2004
Posts: 55

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Angry Conexant Modem Help

Hi I am currently switching from windows to linux. Right now I'm running Redhat 9. I just bought a shiny new HCF Conexant 56k modem, and when i plugged it in, kudzu recognized it and i chose to 'configure' when prompted. I have since checked the 'hardware browser' and the modem is nowhere to be found. It does show up when i run /sbin/lspci tho.

Unfortunately this must mean that i don't have drivers for it, and of course i look online and find that there are drivers which are $15 to download( I find this irritating when the drivers for windows are free. linuxant however, has a page dedicated to bullshitting around this notion. Anyway, I just spent $40 on this modem, and i could have bought a US Robotics for the price of the driver and the modem... my question is, if i take my conexant 56k modem back, and get a us robotics modem instead, am i likely to have the same problem? Thx for any help, and if anybody wants to send me a free conexant rpm for redhat and solve the problem that way I certainly wouldn't complain...

Last edited by fatherg; 04-05-2004 at 09:00 PM.
Old 04-05-2004, 11:12 PM   #2
LQ Guru
Registered: Feb 2003
Location: Sparta, NC USA
Distribution: Ubuntu 10.04
Posts: 5,141

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You can't go wrong with an external serial port modem.

# Modem and connection troubleshooting
WinModems and Linux
Modem NHFs
Conexant/Rockwell modem HOWTO
The Unofficial PCTel Linux Driver page
I finaly got my PcTel hsp56 mr modem to work
PcTel PCT789 Compilation in Fedora Core 1
Linux driver for Winmodems with Lucent Apollo (ISA) and Mars (PCI) chipsets
Lucent AMR modem listed as an Intel AC'97 - Smart Link Modems
The kppp Handbook
Dial-up Networking Configuration Using KDE's Kppp
Troubleshooting ISP Connection Problems
Connecting to AOL with Linux

# Configuring a real hardware pci modem
To configure a pci modem, open an x terminal and su - to the root account:
[fancy@tinwhistle fancy]$ su -
[root@tinwhistle root]# cat /proc/pci
Look for your modem in the returned list. Look for something similar to mine:
  Bus  2, device   2, function  0:
    Communication controller: PCI device 151f:0000 (TOPIC SEMICONDUCTOR Corp) (rev 0).
      IRQ 5.
      I/O at 0xc400 [0xc407].
With this info, I use the setserial command:
[root@tinwhistle root]# setserial /dev/ttyS2 irq 5 port 0xc400 uart 16550a
Then I test the modem with the internet connection wizard and it works. I edit /etc/rc.d/rc.local and enter the setserial command:
[root@tinwhistle root]# pico -w /etc/rc.d/rc.local
My file for an example
# Redhat /etc/rc.d/rc.local file
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local
# configure modem
setserial /dev/ttyS2 irq 5 port 0xc400 uart 16550a
Now, it remains configured after a reboot.


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