Re: Trouble with PCI hardware modem

[Charles Roberts <ai4a@enia.net>]

Steve Kennedy wrote:
> Hi,
>
> I'm having no success getting my PCI hardware modem working. Hope
> someone here can help.
>
> I've been following Jason McCarty's Linux PCI-Modem Micro-HOW-TO, and
> here's what I've done so far.
>
> As root, ran:
>     cd /dev && ./MAKEDEV ttyS4
>
> ls -l /dev/ttyS4 shows:
>     crw-rw----  1  root  dialout  4, 68  Jun 6 19:10  /dev/ttyS4
>
> dmesg|grep ttyS shows:
>     ttyS00 at 0x03f8 (irq = 4) is a 16550A
>     ttyS01 at 0x02f8 (irq = 3) is a 16550A
>     ttyS04 at port 0xa000 (irq = 17) is a 16550A
>
> This matches the output of lspci -v:
>     00:09.0  Serial controller: US Robotics/3Com 56K FaxModem Model
> 5610    (rev 01) (prog-if 02 [16550])
>        Subsystem: US Robotics/3Com USR 56K Internal Voice Modem (Model
> 2976)
>        Flags: medium devsel, IRQ 17
>        I/O ports at a000 [size=8]
>        Capabilities: [dc] Power Management version 2
>
> After running pppconfig, and triple-checking the information I keyed
> in, I ran pon. It fails to connect, in fact the modem makes no sound at
> all. (Yes, the phone jack is plugged into the wall and the back of the
> computer). I checked tail -f /var/log/messages, but there's no reply to
> the initial challenge and the program exits after a few "alerts".
>
> Any suggestions?
> Thanks for your help.
> Steve
>
> ______________________________________________________________________ 
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Hi Steve;

I have the same modem and it works fine. On my modem the irq is 11. Use 
setserial to change the settings.

HTH
Charles