mgetty and pppd (was Re: Playing nice...)

Gert Doering (gert@greenie.muc.de)
Sun, 13 Dec 1998 22:48:06 +0100


Hi,

On Sun, Dec 13, 1998 at 01:26:37PM -0600, Brian wrote:
> Several people have made the assumption that there is a *locking*
> problem
> between my mgetty and pppd.  So apparently this is a commonly-discussed
> issue. But the reality is that locking works fine--I was quite impressed
> with
> how well mgetty and pppd co-existed.  The problem turned out to be
> something
> as yet unidentified that mgettty does to my modem (a  Zoom 56K) which
> renders it unable to transfer data packets.

Well, if you have mgetty send an init-string to the modem that will hose
it, then it will be hosed.  Without looking at the mgetty log file and
your modem manual, this can't be further diagnosed... :-)

Since there was no description in *which way* pppd fails when mgetty is
running, and "lock file problem" is by far (99.5%) the most common cause,
especially since some major distributions ship with broken PPP startup
scripts, this was the logical assumption for us to make - this is why it
is so important to be able to look at mgetty/pppd log files...

But thanks for clarifying this, I will try to remember when the next
mgetty/ppp question comes in.

gert
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de