Re: [gentoo-user] What /devTTY? is the modem normally under?

[Nick Rout]

On Tue, 27 Sep 2005 21:56:49 -0500
John Jolet wrote:

> a modem on a laptop isn't likely to be under anything.  MOST of them
> are "winmodems" and are mostly software.  windows software, to be
> exact.  There may be projects out there to get some of them to work,
> but I'm not sure what the success rate is these days.  Last I looked,
> it was abysmal.
>
> However, modems in general are normally under /dev/modem, which
> should be a symlink to /dev/ttyS0, or /dev/ttyS1.

OTOH many of them can be made to work. You need to find out what sort it is.

The folowing resources may assist:

http://www.linux-laptop.net/  - database of laptops and links to other
users experiences.

http://tuxmobil.org/laptop_manufacturer.html ditto

http://linmodems.technion.ac.il/ - in particular the scanmodem utility.
Run it and look at the files it produces.

The linmodem mailing list is also referenced on that page.

Different linmodem drivers place the device in different places. My
laptop has an LTmodem which has its device in a different place to an
slmodem. The good news is that once you have it working tyou can make a
symlink to /dev/modem (or get udev to do so).

More good news is that if your modem has a linux driver it is probably
in portage. You really do need to study the documentation though.

Be aware of this too: lspci will give you a vendor and product ID. These can be confusing, as the unique winmodem is often the subsystem
underneath that. I can't give you as modem example, but look at this
output of lspci -vn in realtion to my ethernet card:

0000:00:12.0 Class 0200: 1106:3065 (rev 74)
        Subsystem: 1106:0102

Often the top line can be the same (the bit that says 1106:3065) but the
second, subsystem line (the 1106:0102 bit) can say completely different
things  on different modems requiring different drivers. The tricky bit
is that lspci (without -v) can give the same result in either case.
However scanmodem should give accurate results. Get the latest direct
from the site I gave above, as things move along fast in winmodemland.

Good luck.



>
> On Sep 27, 2005, at 9:40 PM, Richard Watson wrote:
>
> > Hi, I have an internal modem on my laptop (Compaq nx7000). I was
> > wondering
> > if anyone can tell what the /dev/tty is likely to be under udev.
> > Thanks,
> > Alan
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-- 
Nick Rout <nick@×××××××.nz>

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