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Old 06-20-2004, 07:01 PM   #1
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Registered: Jun 2004
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Redhat9 doesn't detect my modem

Redhat9 doesn't detect my modem


yesterday i installed Red hat 9 and it was my first time touching the linux OS. i specially bought a US Robotics Exteral modem for it as people told me that it wors good with linux and it doesn't need any installation. but things come out in reverse way.
i attached the modem to system and installed it under XP and it worked find then i went to Linux and tried to make a dial-up too. but first of all i didn't find the place where i could see that the modem is detected and picked-up its driver. but i foud something like: Internet connection wizard, so i clicked that and it was trying to detect modem but nothing found.
i went to hardware broser to but didn't see modem listed in there. as i expect that if linux could not find a driver for it at least it should have shown that a new hardware is detected. but nothing like that i have seen there. i am quite new guy in linux maybe i don't know enough about it to setup the modem.
my modem is US robotics 5630b external
here is a clear image of it:

my system configuration:
Pentuim III
256 MB ram
2 x 40GB HDD moxter and seagate
2 x modems Lucent and US robotics which i am having trouble with
ASUS motherborad
TVPlayPro TV tunner card

i will really appreciate your help

Old 06-21-2004, 12:58 PM   #2
Registered: Apr 2004
Location: Greater London
Distribution: SuSE 9.1 Pro, Linux XP Pro (based on Fedora Core 1), Knoppix, DeMuDi (Agnula Project)
Posts: 80

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Exclamation Winmodems vs "Real Modems"...

Hmmm... normally US Robotics modems are so-called "Winmodems", meaning they only work under Windows. "Winmodems" have a portion of their hardware missing, which is then replaced by software running under Windows.

I looked up your modem, and despite it being an external modem connecting via serial port, I cannot find ANY reference to it working under Linux. Even the US robotics site only mentions Micro$oft compatability. I will therefore assume it's a winmodem.

Now, some winmodems can be made to work under Linux (depending on chipset), but not without a heck of a lot of work!
Please refer to this page for more info:

Hayes/Zoom modems (again, use the external serial port version) normally work without any hassle under Red Hat and Red Hat related distros (or any other Linux distro, for that matter). So, if you can still return yours, it will be worth exchanging it for a Hayes modem. They are relatively inexpensive (of course always depending on local availability/economy).

Once your modem is detected, it should show up as connected to /dev/ttyS0 or /dev/ttyS1 - please note that when Red Hat finds a new piece of hardware, it normally does so during startup and then runs the installation programme (called Kutzu, I believe) BEFORE starting the GUI.
Once you have started the GUI desktop, you can use either the Control Center or System Tools to configure hardware and internet access tools such as ppp0 (kppp on a KDE desktop).

Hope this helps you somewhat.

Last edited by LittleAngel; 06-21-2004 at 01:13 PM.
Old 06-21-2004, 04:28 PM   #3
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Registered: Jun 2004
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i really appreciated your help.
one think i am consufed about is that u said my modem is winmodem, maybe yes it is. but as i heard from people that US robotics modem (External one) is so detectable in linux that people choose always to by that for thier modem. everyone i asked they said my modem shouldn't need any driver or even instalation.

please consider this:

i removed modem and in start-up kudzu said i removed it and gave me options if i want to remove its settings. it is very confusing, please tell me some ways to check if it is detected.

Old 06-21-2004, 04:46 PM   #4
Registered: Apr 2004
Location: Greater London
Distribution: SuSE 9.1 Pro, Linux XP Pro (based on Fedora Core 1), Knoppix, DeMuDi (Agnula Project)
Posts: 80

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Hi again!

So, your modem HAS indeed been detected - don't worry, even if you selected to remove the settings in Kudzu, if you reconnect the modem then on next restart of your Red Hat system, Kudzu will detect it again.

So, the good news is Red Hat has got a driver for your modem, and I'm glad to say I was wrong and your modem isn't a winmodem. However I suspect that you are confused about how to configure it for dial-up. Do you use the KDE or the GNOME desktop?

Let me know and I'll log onto my Fedora Core system (new version of Red Hat) to give you a guide accordingly on how to proceed.

And yes, it may be confusing, but your modem DOES need a driver and being installed to work - but NOT in the same way as under Windoze. What I mean is that with Linux systems the installation of the operating system and the necessary drivers happen in the same stage, whereas with Windows you first install the operating system, then painstakingly install all the drivers. That's another reason why Linux is a superior system!

Don't worry, in time you'll get acquainted better with how Linux does things and you will appreciate just how smooth it all runs. Just stop thinking the Micro$oft way and start thinking Linux, i.e. freedom, flexibility, stability etc...

Don't worry, we'll get your system sorted out!

Last edited by LittleAngel; 06-21-2004 at 08:53 PM.
Old 06-22-2004, 03:41 PM   #5
Registered: Apr 2004
Location: Greater London
Distribution: SuSE 9.1 Pro, Linux XP Pro (based on Fedora Core 1), Knoppix, DeMuDi (Agnula Project)
Posts: 80

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kppp setup using KDE desktop

From the menu, find: Internet - More Internet Applications - kppp
A query box will pop up, asking for the root password
Enter your root password

KPPP setup box display - click on "setup"
New dialogue box, click on "New"

Dialogue setup box, enter the connection name (your ISP), then click on "add" to enter phone number
Enter phone number of your ISP in the box, click "ok"

Authentication should be set to PAP/CHAP

Click "okay"

The dialogue box KPPP Configuration should now show the ISP name.
Click on the device tab and select the correct modem (most likely /dev/ttyS0)
Click on Modem tab and click "query modem"
The ATI Query box should now test your modem and if all is correct, will dislay the modem name in the result dialogue box.

Click "ok" to close the ATI Query box.

Click "ok" on the KPPP box, then enter login ID and password.

Click "connect"

If all is well, your modem will now dial up to your ISP in the usual manner.

If you find that your modem is killing your ears and decide you'd rather not listen to the irritating electronic noise, you can turn the volume down or off in the KPPP dialogue box from the modem tab.

Hope this works, if you're using GNOME, it should be pretty similar.

Last edited by LittleAngel; 06-22-2004 at 05:25 PM.


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