I'll take a look at the modem when I get home tonight

-E


 


 

-----Original Message-----
From: Neil Parker <[EMAIL PROTECTED]>
To: [email protected]
Sent: Sun, 10 Jun 2007 1:00 am
Subject: Re: [Eug-lug] failure to initialize modem










erock23175 wrote,
>I'm having some difficulty in getting Penggy to work. I think (I'm not
>sure) that when we imported the data from my previous install of Penggy,
>that we also imported the hardware pref or config files. The previous
>machine connected via an external modem, while my current machine has
>a PCI modem. Any suggestions? I'm not sure about the modem having never
>dialed to anything from it, is there a way to test the modem or the line
>without signing on to my aol account?

Have you had any previous success with this modem in Linux?  What chipset
does it use?

The problem with PCI modems is that most (not all, but most) of them
are not real modems...in order to save manufacturing costs, the maker
leaves important functions off the card, and simulates them in the the
driver software.  Unfortunately, most such manufacturers are unaware
that there are operating systems other than Windows, and Linux support,
if it's available at all, often leaves much to be desired.  These cards
are known as "winmodems" (or, more colloquially, "pieces of crap").

There is Linux support for some winmodem chipsets:

     * Lucent/Agere:  There's a driver that supports the Apollo and Mars
       chipsets, but not the Lucent AMR.
     * Intel/Ambient/Cirrus Logic:  Intel supplies drivers for these, but
       they obviously haven't been maintained recently, and they stopped
       working sometime between kernel 2.6.15 and kernel 2.6.17.
     * Conexant/Rockwell:  Conexant supplies drivers for these (under the
       name "Linuxant"), but they cost money.  There's a free version of
       the driver, but it's limited to low baud rates.
     * PC-Tel:  Apparently there are drivers available from somewhere.
     * IBM:  A driver for the MWave (found in some Thinkpads) is included
       in the standard kernel.

Except for the IBM MWave driver, all of these depend on proprietary
binary-only modules, and support for them should probably not be
considered stable.  My own experience with Intel's drivers suggests that
support often lags behind kernel development--sometimes substantially
behind.

For Linux users, the holy grail is a full hardware modem--these work with
the standard serial port driver, and require no proprietary modules.
3Com (formerly U.S. Robotics) makes several of these (based on Texas
Instruments chipsets), but they're not very common.  Mr O can probably
order one for you.  (But beware--my experience with a 3Com PCI modem has
not been good...it often dropped my connection for no apparent reason.
I'm currently using an external modem, which has been much more reliable.)

If you still have the external modem you were using before, I recommend
using it.  It will save you a ton of grief.  If you're determined to get
your PCI modem working in Linux, open up your box, examine the modem
board, and find the manufacturer and part number of the modem chip (it's
usually the largest chip on the board, and will often have the digits "56"
in its part number).  Post the manufacturer and part number here, and
have a look at http://www.xmodem.org/chipsets/dips/roster.html, which
lists several common modem chipsets and their level of Linux support.

Note that I need the CHIP manufacturer and part number, not the BOARD
manufacturer and part number.

              - Neil Parker
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