pppd stops communicating with modem on ttyS1after a minute or two

[Doubletwist]

Neil Woolford wrote:
> Hi,
> 
> I'm trying to use a dialup connection with Ubuntu.
> 
> I can connect to my ISP as normal, but then I get a failure of the 
> connection after three to eight minutes.
> 
> In /var/log/messages I find the following lines from pppd;
> 
> No response to 4 echo requests.
> Serial link appears to be disconnected.
> Connection terminated.
> 

Since you say everything works fine under other environments, that 
messages makes it seem like it's trying to ping the other side and not 
getting a response.

Are you running a firewall that's blocking outbound pings to/from your 
gateway? And does that modem STILL work in other environments? It could 
conceivably have gone bad since the last time you used it in Windows 
etc? :) Ok, I'm stretching there but it could happen.


Otherwise I have no idea. Dialup is working ok for me so far. [now that 
I finally got a working modem ;) ]

Good luck!
DT