Re: PowerBook G3 internal modem

I have problems ( more than likely different ) too
with my modem too on a desktop G3 with the 2.2 kernel,
& on an older 6100 with a version of linuxppc from
last year
when I went serial debugging the line I noticed bit
errors for particular combinations of characters.

On my G3 to get the modem to work reliably I have to
start the Mac OS first then warm boot into linuxppc.
I believe this causes some registers in the scc serial
chip to be initialialised by the MAC OS which aren't
being initialised by the linuxppc driver.

--- Patrick Callahan <pac1@tiac.net> wrote:

There's some problem I have that prevents kppp from
working correctly when I
start it from a terminal window of a user account.
When started this way it
freezes after receiving just a few packets.    When
started from a terminal
window that has been su'ed to root,   It works just
fine.

I don't know what the cause of this problem is, but
I could reproduce it several
times on one occasion.   I havn't tried to run kppp
from the user account since.

Hey developers, I saw something in the lists
recently about ppp freezes.  are we
on to something with this user vs root stuff or are
we just ignorant of something
and need to set stuff up correctly so it works from
the user account.

-Pat  icq 17780787

Gilbert Fernandes wrote:

quoted

Hello,

I've installed CS 1.1 on a PowerBook G3,

WallStreet II model.

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I' using KDE, and I've configured kPPP and I've

got a problem. The

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internal modem (cobalt modem) is at ttyS2. If I

open a console, I can

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launch minicom and communicate with the modem

(I've setup /dev/modem to

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/dev/ttyS2). I can give the modem an ATZ and do

whatever I want.

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When I'm using kPPP under KDE, I got more trouble.

First, I can only use

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the dialing once. If I try to connect, everything

works fine, but once I

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was connected, everything freezed! I couldn't do

anything: I tried

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clicking in the KDE tool bar, launching a console

(I didn't know about

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the Option+Ctrl+Fn at that time, I'm a complete

newbie).

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When the modem connection fails (like this

morning, I'm in Germany and I

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tried to connect to my ISP; I've clicked on the

"modem forces the CD"

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button) the modem no longer works with kPPP. I can

open a console, and

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talk to the modem, but kPPP cannot speak to the

modem. Whatever I do,

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the log window shows the modem doesn't answer to

kPPP (and I've checked

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there is a lock file, so the modem should only be

answering to kPPP

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since minicom isn't running).

It's not really a problem, since the modem dials

but only in France.

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But, I'd like to be able to connect from Canada or

Germany (or whereever

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I may be) so if someone had that problem once,

please help.

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I've not tried to connect from France, and first

(and last) time I

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tried, everything froze. I'll try again, and I've

put 'netscape' as

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program to launch on kPPP so perhaps it'll work

(?).

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Is it possible to write some script I would launch

under the console,

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that would connect and make the pppd deamon work,

then I would 'startx'

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and use the KDE mail program and netscape

communicator? I don't know how

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to to that yet, and my "Linux pour les Nuls" book

uses a very different

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way to manage connections to Internet, but when I

tried it, I got a

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"unknown command 'CONNECT' so I gave up that

method for the moment).

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I've tried several commands, to ask the modem to

'ignore the carrier'

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from the phone (the modem waits for a french tone,

a continuous 440 Khz

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tone, the A tone in fact for musicians around) and

the german one is a

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non-continous tone. I've tried those:

1. &C0 instead of &C1 (but this should change the

way the modem answers

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to the carrier from the modem it's talking to, so

this should not be the

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good one).

2. NC6 ; this one is to tell the modem the country

code is 6, that is

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Germany. But the modem didn't react to it.

3. Xn  I've tried several numbers from 0 to 4 (4

being the minicom

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default). Gave nothing.

4. Sn=x   I've used S6=1 to tell the modem "wait

line before blind

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dialing" but it didn't work either :P

I've browsed some archive at Yellow Dog Linux

site, and it looks like

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several people tried using the internal modem of

the PowerBook G3. Some

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didn't found it (I found ttyS3) and the messages

remained unanswered for most.

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--
Gilbert Fernandes

=====


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