Comment 16 for bug 1435776

This bug is caused by the fact the NM's ofono plugin checks for the existence of Username and Password properties in the APN, and if found, adds them as settings to the NM_SETTING_GSM instance ( which is added to the associated NM_CONNECTION instance ).

For some reason, the fact that only 'Username' is set doesn't seem to effect the first connection attempt, but them for some reason, the NM settings code resets its secrets logic and thinks that a 'Password' is required the next time a connection attempt occurs.

Rather than debug the settings secrets logic, I opted to remove the code in the ofono plugin which adds these settings, as in reality, NM does nothing with them, they're actually used by ofono directly.

Likewise the same code ( in src/settings/plugins/ofono/parser.c ) adds an APN setting to the NM_SETTING_GSM instance, however it searches for the APN in the context using the key "Apn", when the key is actually named "AccessPointName". So, the code was always adding an NM_SETTING_GSM_APN with value of "".

I will add a branch to the bug later this afternoon.

In the meanwhile, anyone who'd like to test can use the version ( 0.9.10.0-4ubuntu15.1~awe4 ) in the phablet-team's telephony PPA:

https://launchpad.net/~phablet-team/+archive/ubuntu/telephony