If you haven't, can you please ensure you have all the latest updates installed and then re-test?
Next, can you please run the command ( via terminal or Alt+F2 / Run application ):
apport-collect 456612
This will give us some more information to work with.
Also, please see the following page for debugging problems with 3G modems:
https://wiki.ubuntu.com/DebuggingModemmanager
Thanks!
If you haven't, can you please ensure you have all the latest updates installed and then re-test?
Next, can you please run the command ( via terminal or Alt+F2 / Run application ):
apport-collect 456612
This will give us some more information to work with.
Also, please see the following page for debugging problems with 3G modems:
https:/ /wiki.ubuntu. com/DebuggingMo demmanager
Thanks!