ef942ca564
ModemManager[2804]: <warn> [1545055222.508649] No valid firmware images listed. Assuming firmware unsupported.
ModemManager[2804]: <debug> [1545055222.508665] firmware list loading failed: unsupported
ModemManager[2804]: <debug> [1545055222.508683] Couldn't load firmware image list: firmware list unknown
ModemManager[2804]: <debug> [1545055222.508728] Couldn't load current firmware image: current firmware unknown
(ModemManager:2804): GLib-CRITICAL **: 15:00:22.508: g_variant_builder_end: assertion '!GVSB(builder)->uniform_item_types || GVSB(builder)->prev_item_type != NULL || g_variant_type_is_definite (GVSB(builder)->type)' failed
Thread 1 "ModemManager" received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff75b39b6 in ?? () from /usr/lib/libglib-2.0.so.0
(gdb) bt
#0 0x00007ffff75b39b6 in () at /usr/lib/libglib-2.0.so.0
#1 0x00007ffff75b4363 in g_logv () at /usr/lib/libglib-2.0.so.0
#2 0x00007ffff75b4560 in g_log () at /usr/lib/libglib-2.0.so.0
#3 0x00007ffff758867d in g_variant_builder_end () at /usr/lib/libglib-2.0.so.0
#4 0x00005555555e4d12 in load_current_ready (self=0x55555579c330, res=0x5555557388e0, ctx=0x5555557d6d80) at mm-iface-modem-firmware.c:84
#5 0x00007ffff778f194 in () at /usr/lib/libgio-2.0.so.0
#6 0x00007ffff778f1c9 in () at /usr/lib/libgio-2.0.so.0
#7 0x00007ffff75c4271 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#8 0x00007ffff75c5f89 in () at /usr/lib/libglib-2.0.so.0
#9 0x00007ffff75c6f62 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#10 0x0000555555597aa0 in main (argc=2, argv=0x7fffffffe488) at main.c:181
ModemManager. ModemManager provides a unified high level API for communicating with mobile broadband modems, regardless of the protocol used to communicate with the actual device (Generic AT, vendor-specific AT, QCDM, QMI, MBIM...). Using. ModemManager is a system daemon and is not meant to be used directly from the command line. However, since it provides a DBus API, it is possible to use 'dbus-send' commands or the new 'mmcli' command line interface to control it from the terminal. The devices are queried from udev and automatically updated based on hardware events, although a manual re-scan can also be requested to look for RS232 modems. Implementation. ModemManager is a DBus system bus activated service (meaning it's started automatically when a request arrives). It is written in C, using glib and gio. Several GInterfaces specify different features that the modems support, including the generic MMIfaceModem3gpp and MMIfaceModemCdma which provice basic operations for 3GPP (GSM, UMTS, LTE) or CDMA (CDMA1x, EV-DO) modems. If a given feature is not available in the modem, the specific interface will not be exported in DBus. Plugins. Plugins are loaded on startup, and must implement the MMPlugin interface. It consists of a couple of methods which tell the daemon whether the plugin supports a port and to create custom MMBroadbandModem implementations. It most likely makes sense to derive custom modem implementations from one of the generic classes and just add (or override) operations which are not standard. There are multiple fully working plugins in the plugins/ directory that can be used as an example for writing new plugins. Writing new plugins is highly encouraged! The plugin API is open for changes, so if you're writing a plugin and need to add or change some public method, feel free to suggest it! License. The ModemManager and mmcli binaries are both GPLv2+. The libmm-glib library is LGPLv2+.