Adding --log-level=DEBUG to modem-manager can avoid segfault and keep modem-manager running. But still no luck to connect au(KDDI). That might be a another bug that I should file next later.
Adding --log-level=DEBUG to modem-manager can avoid segfault and keep modem-manager running. But still no luck to connect au(KDDI). That might be a another bug that I should file next later.