I have seen the same problem with a SIM card that sometimes takes 3 minutes to register, and another that takes 30 seconds. The problem is that the modem is trying to register first in a network to which the SIM does not belong. This is triggered whenever ofonod takes a bit longer than expected to register: this makes NetworkManager a bit nervous, and it calls to interface=org.ofono.NetworkRegistration; member=Register.
There is nothing with this call, but ofono sends because of this a RIL_REQUEST_SET_NETWORK_SELECTION_AUTOMATIC message to RILd. This is equivalent to doing AT+COPS=0 in an AT modem, which *almost for sure* removes the EF_LOCI file in the SIM card. This file contains information of the latest network to which the SIM was registered and the TMSI: this information speeds up considerably the registration. Summarizing: the call to RIL_REQUEST_SET_NETWORK_SELECTION_AUTOMATIC makes the SIM to register like if it had woken up in another country or for the very first time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1226145 Title: Modem can sometimes take more than 20s to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ofono/+bug/1226145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
