Log messages for WWAN connectons?

[Mohan Sfo <mohansfo yahoo com>]

Hello all,

[I am using the same card as Dan Williams. :-)]

How do I enable extensive logging in NetworkManager?   Where are the log files?

I am running into potential bugs in NetworkManager in the way it manages WWAN connections.  I am able to connect manually realiably via wvdial fine (after disabling  AT+CGDCONT=3). NetworkManager connect sometimes and fails sometimes.  The variable is due to bugginess of NetworkManager and the train moving. How do I enable extensive logging in NetworkManager?   I want to know what it tried and why it thinks the connect failed. Is is right that at some point NetworkManager relies on ttyACM0 device and pppd?  How do I see the ppp session and the CHAP messages?  I am happy to provide feedback to make NetworkManager reliable.

If I disconnect, how do I comprehensively reset the ttyACM0 device?  Remove the card and remove some modules? What modules?

Thanks,

Mohan