Hello I am using the Sierra MC7354 modem, and we are getting unusual disconnects on AT&T in the US. Vodafone is fine on the same modems, and this only seems to happen on 4G. AT&T 3G seems to work.
We start out connected, but after a bit of time we hit "gsm-wcdma-regular-deactivation/[3gpp] regular-deactivation", and then we're spamming the log file with those messages (up to 240 lines/sec). Logs below. Similar to this post, but seems mostly unrelated. https://lists.freedesktop.org/archives/modemmanager-devel/2017-February/003988.html We opening/closing PDP connections during this period, but there is no connectivity. Questions: 1) Any ideas what is happening? 2) should I be calling ifdown when I hit 'state changed (connected -> registered)' ? We have been in touch with both Sierra and AT&T, but they say that libQMI is unsupported. so there is not much help there. Setup Sierra MC7354 modem ModemManager 1.6.2 libQmi 1.16.0 Arm linux - kernel 3.14 I'm using buildroot, so upgrading libQmi (to 1.18.0 or 1.20.0) and ModemManager (to 1.6.8 or 1.8.0) would be doable. Are there any additional benefits in the newer versions regarding this issue? ------------------------------ <Normal connect procedure> Aug 6 07:14:44 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected) <snip - Connected and reachable> Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation Aug 6 08:07:37 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connected -> registered) Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation Aug 6 08:07:37 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' <snip - 8 sec:approx 1850 log lines of "regular-deactivation"> Aug 6 08:07:45 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) Aug 6 08:07:45 armxl ModemManager[932]: <info> QMI IPv4 Settings: Aug 6 08:07:45 armxl ModemManager[932]: <info> Address: X.X.X.X/29 Aug 6 08:07:45 armxl ModemManager[932]: <info> Gateway: X.X.X.X Aug 6 08:07:45 armxl ModemManager[932]: <info> DNS #1: X.X.X.X Aug 6 08:07:45 armxl ModemManager[932]: <info> DNS #2: X.X.X.X Aug 6 08:07:45 armxl ModemManager[932]: <info> MTU: 1430 Aug 6 08:07:45 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected) Aug 6 08:08:14 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:08:14 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation Aug 6 08:08:14 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connected -> registered) Aug 6 08:08:14 armxl ModemManager[932]: <info> bearer call end reason (1008): 'gsm-wcdma-regular-deactivation' Aug 6 08:08:14 armxl ModemManager[932]: <info> bearer verbose call end reason (6,36): [3gpp] regular-deactivation <snip - 8 sec:approx 1850 log lines of "regular-deactivation"> Aug 6 08:08:22 armxl ModemManager[932]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting) -- Regards Einar Jón _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
