Re: Dial-up modem 'No CARRIER'
Robert Goley said...
> On Mon, 2005-10-17 at 14:18 +0100, marc wrote:
> > Koen Vermeer said...
> > > On Sun, 2005-10-16 at 19:06 +0100, marc wrote:
> > > > The laptop modem is dialing and exchanging with the ISP. Then, 24 times
> > > > out of 25, all I get is 'NO CARRIER'. Very occasionally, I connect
> > > >
> > > > I've tried both wvdial and KPPP in KDE. When I boot into XP, the modem
> > > > connects successfully 100% of the time - so the wiring, hardware and ISP
> > > > are fine.
> > > >
> > > > I read somewhere that nic interrupts might clash, so I've ifdown'd that,
> > > > and I've also tried lowering the line speed don to 9600.
> > > >
> > > > Any suggestions on how to improve things?
> > > >
> > > > I'm on 2.3.13 etch.
> > > Maybe you could tell us what kind of modem you've got...
> > Sorry, I posted before disappearing for the night, and realised I should
> > have provided more info.
> > The modem is:
> > 0000:00:1e.3 Modem: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
> > Family) AC'97Modem Controller (rev 04) (prog-if 00 [Generic])
> > Subsystem: Acer Incorporated [ALI]: Unknown device 007a
> > Flags: bus master, medium devsel, latency 0, IRQ 10
> > I/O ports at e200 [size=256]
> > I/O ports at e300 [size=128]
> > Capabilities:  Power Management version 2
> > PCI id:
> > 0000:00:1e.3 0703: 8086:266d (rev 04)
> > (which is supported here, as an alternative,
> > http://www.linuxant.com/drivers/hsf/index.php
> > I haven't tried the free version yet, though, because although the docs
> > mention Debian, there isn't a package, only the sources.)
> > I'm using sl-modem-daemon. My location is the UK, which is what I have
> > selected in the sl-modem-daemon configuration.
> > > The last time I used my modem is almost a year ago. I got it to work by
> > > using its ALSA driver, but I think I remember that I experienced
> > > problems with wvdial. Some carrier detect problem, badly documented
> > > somewhere on the insane wvdial homepage. I think I got around it by just
> > > using 'ppp on' or something like that. But all of this may not apply to
> > > your modem, of course.
> > Yeah, it's a shame. It's just a lot easier to go into XP! wvdial is
> > okay, but ppp looks horribly complicated - with no guarantee that things
> > will work. (I'm going to try using pppconfig that someone suggested on
> > the .user list.) But this is just a carrier detect problem - hardly
> > modem rocket science. Everything else works, and we know that all the
> > hardware works.
> Try using kppp. It is a lot easier to use and configure since it is
Yes, I mentioned above that I had tried KPPP.
> > Is there a "carrier sniffer" out there? Since modems have been around
> > since the beginning of time, it would seem an obvious diagnostic tool to
> > have been developed. After all, there is a carrier there. Heck, the
> > software has even found it a few times.
> I would try connecting to the same ISP from the same machine running
> windows to eliminate the modem drivers if you have a dual boot. I would
> try connecting to a different ISP from linux if there is any you can
> try. Those would be the first 2 tests I tried.
Yup, done both. 100% success in XP, two connects in about 100 tries in
Linux. I've also configured pppd via pppconfig and I'm still failing.