Hi All. I am using Ubuntu, and achieve the following crash when trying to connect to a Mobile-Broadband connection ::
Last few-logs :: ------------------------ ######################################################################## ModemManager[11586]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (unknown -> registering) ModemManager[11586]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (registering -> home) ModemManager[11586]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP location updated (MCC: '0', MNC: '0', Location area code: '79C4', Cell ID: '7925EE') ModemManager[11586]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP location updated (MCC: '404', MNC: '10', Location area code: '79C4', Cell ID: '7925EE') ModemManager[11586]: mm_serial_port_close: assertion 'priv->open_count > 0' failed ModemManager[11586]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling -> registered) ModemManager[11586]: <info> (tty/ttyUSB0): released by modem /sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1 ModemManager[11586]: <info> (tty/ttyUSB2): released by modem /sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1 ModemManager[11586]: <info> (tty/ttyUSB4): released by modem /sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1 ModemManager[11586]: <info> (tty/ttyUSB3): released by modem /sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1 ModemManager[11586]: <info> Simple connect started... ModemManager[11586]: <info> Simple connect state (4/8): Wait to get fully enabled ModemManager[11586]: <info> Simple connect state (5/8): Register ModemManager[11586]: <info> Simple connect state (6/8): Bearer ######################################################################## Backtrace :: ------------------------ ######################################################################## Program received signal SIGSEGV, Segmentation fault. 0x08073234 in mm_bearer_get_path () (gdb) bt #0 0x08073234 in mm_bearer_get_path () #1 0xb6fabc67 in ?? () from /usr/lib/i386-linux-gnu/ModemManager/libmm-plugin-sierra-legacy.so #2 0x08086173 in ?? () #3 0xb7c984c5 in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0 #4 0xb6fabd92 in ?? () from /usr/lib/i386-linux-gnu/ModemManager/libmm-plugin-sierra-legacy.so #5 0xb7c984c5 in g_simple_async_result_complete () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0 #6 0xb7c9852b in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0 #7 0xb7b10c50 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #8 0xb7b140a7 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0 #9 0xb7b14468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #10 0xb7b1476b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0 #11 0x0806869d in main () ######################################################################## I see an identical reported bug at https://bugzilla.redhat.com/show_bug.cgi?id=1089094, however there was no progress there due to EOL of the OS. I tried on Ubuntu-14 on Linux-Kernel-3.16 and Linux-Kernel-4.2, and behaviour is same. The modemmanager version is 1.0.0-2ubuntu1.1 on both. I tried "apt-get install", but I am told it is the latest-version available. Not sure whether really this is in domain of NM-guys or kernel-guys, so ccing both :) Any ideas of a fix/workaround? Thanks and Regards, Ajay
