Re: PPP . . . kind of . . . sort of . . . sometimes

["Steve \"Stevers!\" Coile" <scoile redhat com>]

On Mon, 31 May 1999, Yuki Taga wrote:
[...]
> 1) On any boot into Linux *after* using the modem in NT or Windows, the 
> command /sbin/ifup ppp0 will fail.  The modem absolutely will not dial.

Is the modem getting different IRQ, DMA, or IO settings under Windows
than it has under Linux?

Does /etc/sysconfig/network-scripts/chat-ppp0 include any initialization
strings for your modem?  Perhaps your modem isn't being properly reset.
Try adding ATZ to the chat script and see if that fixes things.

> 2) In the same situation, the command /usr/local/bin/wvdial will...

What is /usr/local/bin/wvdial?

[...]
> 3) After the failure in step 2, regardless of whether step 1 was even 
> attempted or not, the command /sbin/ifup ppp0 now successfully dials 
> and immediately establishes a working ppp connection every single 
> time.  Moreover, a reboot into Linux that does not involve modem use in 
> another OS means the command will work instead of failing in step 1.

Sounds like the modem isn't being left in a clean state after its use
elsewhere.  I'd definitely try to put some initialization settings into
the chat script in /etc/sysconfig/network-scripts.

-- 
Steve Coile               R e d   H a t             Systems Administration
scoile redhat com             S o f t w a r e               (919) 547-0012