Unfortunately, NetworkManager is still segfaulting at the same line (src/settings/nm-settings-plugin.c:147) ╰─▶ dpkg -l network-manager|cat Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-===============-===============-============-========================================================= ii network-manager 1.15.2-0ubuntu2 amd64 network management framework (daemon and userspace tools) feb 26 14:15:31 regan systemd[1]: Started Process Core Dump (PID 27019/UID 0). feb 26 14:15:32 regan systemd-coredump[27022]: Process 26991 (NetworkManager) of user 0 dumped core. Stack trace of thread 26991: #0 0x00007f566794f077 __GI_raise (libc.so.6) #1 0x00007f5667930535 __GI_abort (libc.so.6) #2 0x00007f5667efadc3 g_assertion_message (libglib-2.0.so.0) #3 0x00007f5667f55b7a g_assertion_message_expr (libglib-2.0.so.0) #4 0x0000562133f2d6d6 _nm_settings_plugin_emit_signal_connection_added ( #5 0x00007f56683e059c initialize (libnm-settings-plugin-ifupdown.so) #6 0x0000562133ec7d90 add_plugin (NetworkManager) #7 0x0000562133ecb3a5 add_plugin_load_file (NetworkManager) #8 0x0000562133d6a0b1 nm_manager_start (NetworkManager) #9 0x0000562133d2efe9 main (NetworkManager) #10 0x00007f566793209b __libc_start_main (libc.so.6) #11 0x0000562133d2f31a _start (NetworkManager) Stack trace of thread 27006: #0 0x00007f5667a22219 syscall (libc.so.6) #1 0x00007f5667f78a3a g_cond_wait_until (libglib-2.0.so.0) #2 0x00007f5667eff0c1 g_async_queue_pop_intern_unlocked (libglib-2.0.so. #3 0x00007f5667f57412 g_thread_pool_wait_for_new_task (libglib-2.0.so.0) #4 0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5667b00164 start_thread (libpthread.so.0) #6 0x00007f5667a28def __clone (libc.so.6) Stack trace of thread 27003: #0 0x00007f5667a1c6d9 __GI___poll (libc.so.6) #1 0x00007f5667f2dc76 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f5667f2dd9c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f5667f2dde1 glib_worker_main (libglib-2.0.so.0) #4 0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5667b00164 start_thread (libpthread.so.0) #6 0x00007f5667a28def __clone (libc.so.6) Stack trace of thread 27010: #0 0x00007f5667a22219 syscall (libc.so.6) #1 0x00007f5667f78a3a g_cond_wait_until (libglib-2.0.so.0) #2 0x00007f5667eff0c1 g_async_queue_pop_intern_unlocked (libglib-2.0.so. #3 0x00007f5667f57412 g_thread_pool_wait_for_new_task (libglib-2.0.so.0) #4 0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5667b00164 start_thread (libpthread.so.0) #6 0x00007f5667a28def __clone (libc.so.6) Stack trace of thread 27007: #0 0x00007f5667a1c6d9 __GI___poll (libc.so.6) #1 0x00007f5667f2dc76 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f5667f2e002 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f566816f9a6 gdbus_shared_thread_func (libgio-2.0.so.0) #4 0x00007f5667f5690d g_thread_proxy (libglib-2.0.so.0) #5 0x00007f5667b00164 start_thread (libpthread.so.0) #6 0x00007f5667a28def __clone (libc.so.6) feb 26 14:15:32 regan systemd[1]: systemd-coredump@10-27019-0.service: Succeeded. ╰─▶ gdb =NetworkManager core.NetworkManager.0.e442861c9aff49ceb10624333ae787d1.26991.1551186931000000 GNU gdb (Ubuntu 8.2.50.20190214-0ubuntu1) 8.2.50.20190214-git Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/sbin/NetworkManager... Reading symbols from /usr/lib/debug/.build-id/ed/ab89985cc587cb5438c633398dadff8b8a058d.debug... [New LWP 26991] [New LWP 27006] [New LWP 27003] [New LWP 27010] [New LWP 27007] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/usr/sbin/NetworkManager --no-daemon'. Program terminated with signal SIGABRT, Aborted. #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory. [Current thread is 1 (Thread 0x7f566634abc0 (LWP 26991))] (gdb) bt #0 0x00007f566794f077 in __GI_raise6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00007f5667930535 in __GI_abort () at abort.c:79 #2 0x00007f5667efadc3 in g_assertion_message (domai 0x562133fc5e80 <__func__.31788> "_nm_settings_plugin_emit_signal_connection_added", message=) at ../../../glib/gt estutils.c:2878 #3 0x00007f5667f55b7a in g_assertion_message_expr0x562133f53e9 0x562133fc5d00 "(((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) ((sett_conn)); GType __t = ((nm_settings_connection_get_type ())); gboolean __r; if (!__inst) __r = (0); else if (__inst->g_class && __inst"...) at ../../../glib/gtestutils.c:2904 #4 0x0000562133f2d6d6 in _nm_settings_plugin_emit_signal_connection_added0x562135c11d00 [SettingsPluginIfupdow 0x562135bc32a0) at src/settings/nm-se ttings-plugin.c:147 #5 0x00007f56683e059c in initialize (plugin=) at src/settings/plugins/ifupdown/nms-ifupdown-p lugin.c:286 #6 0x0000562133ec7d90 in add_plugin0x562135bd8b30 [NMSettings], plugin 0x562135bdd2a0 "/usr/lib/x86_64-linux-gnu/NetworkManager/1.15.2/libnm-settings-plugin-ifupdown.so") at src/settings/nm-settings.c:609 #7 0x0000562133ecb3a5 in add_plugin_load_file0x7ffc2d710a98, pname=, argv =) at src/ma in.c:423 (gdb)