Linux-Ready PCI Modem FOUND!

Linux-Ready PCI Modem FOUND!

Post by Rob Cla » Mon, 28 Aug 2000 04:00:00

>    I picked up a k56/V.90PCI modem recently which works fantastic under
>both linux and windows.

>RATOC systems' Inc.
>Model: REX-PCI56
>Chipset: Lucent !!
>Price:  3,500 Yen. Somewhere around $33 U.S., depending on the exchange
>[Large photo]

From the drivers on the Japanese side of their site, it looks like a PCtel
soft modem with "Linmodem" drivers.  If it's a Lucent-based modem, what
are the numbers on the main Lucent chip?  They may have changed to a
Lucent Venus chipset.


1. Linux can't find USR PCI hardware modem


I recently upgraded my motherboard (the Linux partitions were hosed by my
disk contollers failing) and now I can't initialize my 3-COM PCI
controller-based internal modem.  I was able to initialize the modem (and go
and surf, etc.) before I swapped the motherboard.

The thing that really gets me is that the modem works fine under Windows
(com5, IRQ 9, I/O 0x1050-0x1057--IRQ holder for PCI steering has my sound
card, my USR/3-COM 56K Fax PCI modem, and Intel 82371AB/EB PCI to USB
Universal Host Controller sharing the same IRQ (9)).

I do a cat /proc/pci and find the IRQ and I/O
values for what I take to be the modem (they are the same values as in
Windows on my dual-boot system with Redat 6.2.14).

Then I type

setserial /dev/ttyS1 irq 9 port 0x1051 autoconfig

There is a link between  /dev/modem and /dev/ttyS1.

When I go to Gnome ppp to dial up a connection, nothing happens.  Minicom
just sits there too--it seems to think that it has dialed up and connected
but it hasn't--no dialing, handshaking at all, and no "OK" message.  When I
run a debug in Redhat Config for the modem, I get the message that there is
an I/O problem.  Wvdialconf also says there is no serial port.

When I type dmesg I find the following seemingly relevant lines:

Serial driver version 4.27 with MANY-PORTS MULTIPORT SHARE_IRQ enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Creative SBLive! at 0x1020 on irq 9

When the modem was working before I swapped motherboards, the modem shared
IRQ 12 with the sound card, and the modem was assigned com 5 under Windows.
This setup presented no problems for Linux then.  But now Linux can't find
the modem.  I've been looking at the MODEM-HOW-TO pages and have to say I'm
still stumped.

Does anyone have any suggestions about some things I might try to figure
this problem out?



Bloomington, Indiana

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