Subject: Re: SE GC83 GPRS card: pppd problem
To: Jachym Holecek <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 01/29/2006 09:09:35
In message <20060129133603.GA1719@laiska>, Jachym Holecek writes:
>> I am trying to use a Sony Ericsson GC83 GPRS/EDGE card on an HP Jornada 728
>> running yesterday's hpcarm-current. The card works fine under i386-current.
>> Under hpcarm, I get the following message from chat:
>> pppd call tmobile
>> chat Can't get terminal parameters: Operation not supported
>Looks like chat(8)'s standard input is not a terminal device. Are you
>sure you've configured pppd properly?
I'm having this problem, too, ever since the Jan 11 update of pppd.
The cause thus far is quite mysterious, since I know it works for some
other people. My situation uses an EVDO modem that appears as ucom0.
At Christos' suggestion, I tried this as my chat script:
ls -l /proc/$$/fd
stty -a -f /dev/ttyU0
) >/tmp/stty 2>&1
The 'ls' showed quite clearly that fd 0 and 1 were closed when the chat
script was invoked. I'm currently bypassing the problem via this chat
ls -l /proc/$$/fd >&2
/usr/sbin/chat -s -v -V -t 10 -f /etc/ppp/peers/vz
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb