Comment 9 for bug 108177

Sorry Rolando, I did not notice you had already added in a connection log.

The v620 is actually an USB device -- 'lspci' will not show it; you would have to issue a 'lsusb' to see it.

Can you please attach here the PPP configuration in use? Please remember to mask out your userid and password if needed.

There are two chances we can verify here (I, being a lazy bastard, never finished testing it myself...):

1. the airprime module will, by default, build 3 endpoints for the v620; the previous, unofficial, version of this module built one single end-point. It might be that the v620 does not behave well with 3 end-points. Mine is running with one single end-point.

You can do that by editing /etc/modprobe.d/options, and adding the following lines to the end of the file:

# Merlin v620 with one single endpoint
options airprime endpoints=1

2. the parameters 'lcp-echo-interval' and 'lcp-echo-failure' might be playing a role here: some providers (Verizon, for example) will not respond to an echo request. If lcp-echo{failure, interval) are set, then PPP will hang up the connection after 'lc-echo-failure' tries.

I doubt (2) is your case, at least right now, since you are receiving a disconnect. Could you please try (1)? Make sure the card is not inserted, and that you have removed the module from memory ('sudo rmmod airprime'); then make the change as in (1), insert the card, and try again.