timbyr@avl64:/opt/Ardour-5.4.357-dbg$ ./bin/ardour5 --gdb
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Reading symbols from /opt/Ardour-5.4.357-dbg/bin/ardour-5.4.357...done.
(gdb) run
Starting program: /opt/Ardour-5.4.357-dbg/bin/ardour-5.4.357 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
bind txt domain [gtk2_ardour5] to /opt/Ardour-5.4.357-dbg/share/locale
Ardour5.4.357 (built using 5.4-357-g15161d6 and GCC version 5.3.1 20160205)
ardour: [INFO]: Your system is configured to limit Ardour to only 65,536 open files
ardour: [INFO]: Loading system configuration file /opt/Ardour-5.4.357-dbg/etc/system_config
ardour: [INFO]: Loading user configuration file /home/timbyr/.config/ardour5/config
[New Thread 0x7fffe77e4700 (LWP 10629)]
ardour: [INFO]: CPU vendor: GenuineIntel
ardour: [INFO]: CPU brand: Intel(R) Core(TM)2 Duo CPU     P8700  @ 2.53GHz
ardour: [INFO]: Using SSE optimized routines
[New Thread 0x7fffe6fe3700 (LWP 10630)]
[New Thread 0x7fffe67e2700 (LWP 10631)]
[New Thread 0x7fffe5fe1700 (LWP 10632)]
[New Thread 0x7fffd72d1700 (LWP 10633)]
[New Thread 0x7fffd6ad0700 (LWP 10634)]
*** WEAK-JACK: initializing
*** WEAK-JACK: OK. (0)
Cannot xinstall SIGPIPE error handler
ardour: [INFO]: Loading default ui configuration file /opt/Ardour-5.4.357-dbg/etc/default_ui_config
ardour: [INFO]: Loading user ui configuration file /home/timbyr/.config/ardour5/ui_config
ardour: [INFO]: Loading color file /opt/Ardour-5.4.357-dbg/share/themes/dark-ardour.colors
ardour: [INFO]: Loading ui configuration file /opt/Ardour-5.4.357-dbg/etc/clearlooks.rc
ardour: [INFO]: Loading ui configuration file /opt/Ardour-5.4.357-dbg/etc/clearlooks.rc
[New Thread 0x7fffe4097800 (LWP 10635)]
[New Thread 0x7fffc79e4700 (LWP 10636)]
[New Thread 0x7fffc6bb7700 (LWP 10637)]
[New Thread 0x7fffc63b6700 (LWP 10638)]
[New Thread 0x7fffc5bb5700 (LWP 10639)]
Found nothing along /home/timbyr/.config/ardour5/templates:/opt/Ardour-5.4.357-dbg/share/templates
[Thread 0x7fffc63b6700 (LWP 10638) exited]
[Thread 0x7fffc6bb7700 (LWP 10637) exited]
run dialog
curl failed: No Error
[Thread 0x7fffe4097800 (LWP 10635) exited]
[New Thread 0x7fffc6bb7700 (LWP 10640)]
[Thread 0x7fffc6bb7700 (LWP 10640) exited]
[New Thread 0x7fffc6bb7700 (LWP 10643)]
[New Thread 0x7fffc4c94700 (LWP 10646)]

Thread 1 "ardour-5.4.357" received signal SIGSEGV, Segmentation fault.
0x00007fffd53b3240 in jack_port_uuid ()
   from /usr/lib/x86_64-linux-gnu/libjack.so.0
(gdb) t a a bt

Thread 15 (Thread 0x7fffc4c94700 (LWP 10646)):
#0  0x00007fffec23b19d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fffd53b04e6 in jack_cycle_wait ()
   from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffd5657def in WJACK_cycle_wait (client=0x24d5410)
    at ../libs/backends/jack/weak_libjack.def:78
#3  0x00007fffd5639cdb in ARDOUR::JACKAudioBackend::process_thread (
    this=0x24cc840) at ../libs/backends/jack/jack_audiobackend.cc:965
#4  0x00007fffd5639c78 in ARDOUR::JACKAudioBackend::_process_thread (
    arg=0x24cc840) at ../libs/backends/jack/jack_audiobackend.cc:944
#5  0x00007fffd53b0897 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#6  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7fffc6bb7700 (LWP 10643)):
#0  0x00007fffef54509f in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fffd53b1f33 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6
---Type <return> to continue, or q <return> to quit---

Thread 12 (Thread 0x7fffc5bb5700 (LWP 10639)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff38120e1 in g_cond_wait_until ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff378c24b in g_async_queue_timeout_pop ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff37f09ea in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#5  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7fffc79e4700 (LWP 10636)):
#0  0x00007fffec23b19d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff37c0674 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff37c077c in g_main_context_iteration ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff37c07b9 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#4  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#5  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7fffd6ad0700 (LWP 10634)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff3811fcc in g_cond_wait ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff634041a in ARDOUR::AudioEngine::do_devicelist_update (
    this=0x1a18ca0) at ../libs/ardour/audioengine.cc:560
#3  0x00007ffff634bafb in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x1a1bd80, p=0x1a18ca0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff634b5a0 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x1a1bd90, f=..., a=...)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:253
#5  0x00007ffff634ab83 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x1a1bd80)
---Type <return> to continue, or q <return> to quit---
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff634a4a8 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x1a1bd80)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff6349714 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x1a1bd50)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3d5a23d in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7fffd72d1700 (LWP 10633)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff3811fcc in g_cond_wait ()
---Type <return> to continue, or q <return> to quit---
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff63401f4 in ARDOUR::AudioEngine::do_reset_backend (
    this=0x1a18ca0) at ../libs/ardour/audioengine.cc:525
#3  0x00007ffff634bafb in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x1a1bdd0, p=0x1a18ca0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff634b5a0 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x1a1bde0, f=..., a=...)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:253
#5  0x00007ffff634ab83 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x1a1bdd0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff634a4a8 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x1a1bdd0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff6349714 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<A---Type <return> to continue, or q <return> to quit---
RDOUR::AudioEngine*> > >, void>::call_it (rep=0x1a1bda0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3d5a23d in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7fffe5fe1700 (LWP 10632)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff3811fcc in g_cond_wait ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff62d9806 in ARDOUR::Analyser::work ()
    at ../libs/ardour/analyser.cc:87
#3  0x00007ffff62d95f2 in analyser_work () at ../libs/ardour/analyser.cc:52
#4  0x0000000000e4f0e1 in sigc::pointer_functor0<void>::operator() (
    this=0x19b1678)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x0000000000e4c284 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::---Type <return> to continue, or q <return> to quit---
operator() (this=0x19b1670)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#6  0x0000000000e4832f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x19b1640)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff3d5a23d in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#9  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7fffe67e2700 (LWP 10631)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff3811fcc in g_cond_wait ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6962f0c in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:71
#3  0x0000000000e4f0e1 in sigc::pointer_functor0<void>::operator() (
    this=0x19b2b38)
---Type <return> to continue, or q <return> to quit---
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000000e4c284 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x19b2b30)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x0000000000e4832f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x19b2b00)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff3d5a23d in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7fffe6fe3700 (LWP 10630)):
#0  0x00007fffec23fe49 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff3811fcc in g_cond_wait ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6962f0c in peak_thread_work ()
---Type <return> to continue, or q <return> to quit---
    at ../libs/ardour/source_factory.cc:71
#3  0x0000000000e4f0e1 in sigc::pointer_functor0<void>::operator() (
    this=0x197bfb8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000000e4c284 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x197bfb0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x0000000000e4832f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x197bf80)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff3d5a23d in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff37f0225 in ?? ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fffe77e4700 (LWP 10629)):
#0  0x00007fffef5487cd in nanosleep ()
---Type <return> to continue, or q <return> to quit---
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff37f1a48 in g_usleep ()
   from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#2  0x0000000001145811 in gui_event_loop (ptr=0x0)
    at ../gtk2_ardour/linux_vst_gui_support.cc:477
#3  0x00007fffef53f464 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fffec24430d in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7ffff7f9f8c0 (LWP 10623)):
#0  0x00007fffd53b3240 in jack_port_uuid ()
   from /usr/lib/x86_64-linux-gnu/libjack.so.0
#1  0x00007fffd5658d7b in WJACK_port_uuid (p=0x0)
    at ../libs/backends/jack/weak_libjack.def:134
#2  0x00007fffd564ac18 in ARDOUR::JACKAudioBackend::set_port_property (
    this=0x24cc840, port=0x0, key="http://jackaudio.org/metadata/pretty-name", 
    value="MK-249C USB MIDI keyboard MIDI  (IO)", type="")
    at ../libs/backends/jack/jack_portengine.cc:161
#3  0x00007ffff679f7f9 in ARDOUR::PortManager::fill_midi_port_info_locked (
    this=0x1a18ca0) at ../libs/ardour/port_manager.cc:1217
#4  0x00007ffff679f1c7 in ARDOUR::PortManager::fill_midi_port_info (
    this=0x1a18ca0) at ../libs/ardour/port_manager.cc:1140
#5  0x00007ffff6341e71 in ARDOUR::AudioEngine::start (this=0x1a18ca0, 
---Type <return> to continue, or q <return> to quit---
    y=false) at ../libs/ardour/audioengine.cc:896
#6  0x0000000000a63617 in EngineControl::push_state_to_backend (this=0x1c04ef0, start=true) at ../gtk2_ardour/engine_dialog.cc:2421
#7  0x0000000000a532d3 in EngineControl::start_engine (this=0x1c04ef0) at ../gtk2_ardour/engine_dialog.cc:441
#8  0x0000000000a6855a in EngineControl::connect_disconnect_click (this=0x1c04ef0) at ../gtk2_ardour/engine_dialog.cc:3137
#9  0x0000000000a74836 in sigc::bound_mem_functor0<void, EngineControl>::operator() (this=0x1cc9ad8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#10 0x0000000000a732e2 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, EngineControl> >::operator() (this=0x1cc9ad0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#11 0x0000000000a71893 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, EngineControl>, void>::call_it (rep=0x1cc9aa0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#12 0x00007ffff3d6a0b8 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /opt/Ardour-5.4.357-dbg/lib/libglibmm-2.4.so.1
#13 0x00007ffff3ace935 in g_closure_invoke () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#14 0x00007ffff3adff84 in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#15 0x00007ffff3ae9ab1 in g_signal_emit_valist () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#16 0x00007ffff3ae9e32 in g_signal_emit () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#17 0x00007ffff2cd2a72 in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#18 0x00007ffff3aceb64 in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#19 0x00007ffff3ae9751 in g_signal_emit_valist () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#20 0x00007ffff3ae9e32 in g_signal_emit () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#21 0x00007ffff2cd0c52 in gtk_button_released () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#22 0x00007ffff2cd0d19 in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#23 0x00007ffff2db8e6c in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#24 0x00007ffff3ace935 in g_closure_invoke () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#25 0x00007ffff3ae041f in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#26 0x00007ffff3ae95a3 in g_signal_emit_valist () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#27 0x00007ffff3ae9e32 in g_signal_emit () from /opt/Ardour-5.4.357-dbg/lib/libgobject-2.0.so.0
#28 0x00007ffff2f3d78c in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#29 0x00007ffff2db7444 in gtk_propagate_event () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#30 0x00007ffff2db78b3 in gtk_main_do_event () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#31 0x00007ffff29d513c in ?? () from /opt/Ardour-5.4.357-dbg/lib/libgdk-x11-2.0.so.0
#32 0x00007ffff37c0477 in g_main_context_dispatch () from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#33 0x00007ffff37c06d8 in ?? () from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#34 0x00007ffff37c09f2 in g_main_loop_run () from /opt/Ardour-5.4.357-dbg/lib/libglib-2.0.so.0
#35 0x00007ffff2d15078 in gtk_dialog_run () from /opt/Ardour-5.4.357-dbg/lib/libgtk-x11-2.0.so.0
#36 0x0000000000726716 in ARDOUR_UI::do_audio_midi_setup (this=0x1a3a6c0, desired_sample_rate=48000) at ../gtk2_ardour/ardour_ui.cc:5347
#37 0x00000000007672ab in boost::_mfi::mf1<int, ARDOUR_UI, unsigned int>::operator() (this=0x23b58d8, p=0x1a3a6c0, a1=48000)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:165
#38 0x000000000075e006 in boost::_bi::list2<boost::_bi::value<ARDOUR_UI*>, boost::arg<1> >::operator()<int, boost::_mfi::mf1<int, ARDOUR_UI, unsigned int>, boost::_bi::list1<unsigned int&> > (this=0x23b58e8, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:303
#39 0x00000000007530bc in boost::_bi::bind_t<int, boost::_mfi::mf1<int, ARDOUR_UI, unsigned int>, boost::_bi::list2<boost::_bi::value<ARDOUR_UI*>, boost::arg<1> > >::operator()<unsigned int> (this=0x23b58d8, a1=@0x7fffffff8ca4: 48000) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind_template.hpp:32
#40 0x000000000074acc0 in boost::detail::function::function_obj_invoker1<boost::_bi::bind_t<int, boost::_mfi::mf1<int, ARDOUR_UI, unsigned int>, boost::_bi::list2<boost::_bi::value<ARDOUR_UI*>, boost::arg<1> > >, int, unsigned int>::invoke (function_obj_ptr=..., a0=48000)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:132
#41 0x00007ffff6873f38 in boost::function1<int, unsigned int>::operator() (this=0x23b58d0, a0=48000)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:760
#42 0x00007ffff686bcb6 in PBD::Signal1<int, unsigned int, PBD::OptionalLastValue<int> >::operator() (
---Type <return> to continue, or q <return> to quit---
    this=0x18f6000 <ARDOUR::Session::AudioEngineSetupRequired>, a1=48000) at /home/ardour/linux-x86_64-v5/ardour/build/libs/pbd/pbd/signals_generated.h:509
#43 0x00007ffff684124e in ARDOUR::Session::ensure_engine (this=0x21ab510, desired_sample_rate=48000, isnew=false) at ../libs/ardour/session.cc:526
#44 0x00007ffff683f4e0 in ARDOUR::Session::Session (this=0x21ab510, eng=..., 
    fullpath="/home/timbyr/Data/Sessions/test-5.4.357-midi-input-follows-selection", snapshot_name="test-5.4.357-midi-input-follows-selection", 
    bus_profile=0x0, mix_template="") at ../libs/ardour/session.cc:401
#45 0x000000000071b5f8 in ARDOUR_UI::load_session (this=0x1a3a6c0, path="/home/timbyr/Data/Sessions/test-5.4.357-midi-input-follows-selection", 
    snap_name="test-5.4.357-midi-input-follows-selection", mix_template="") at ../gtk2_ardour/ardour_ui.cc:3471
#46 0x000000000071ae14 in ARDOUR_UI::get_session_parameters (this=0x1a3a6c0, quit_on_cancel=false, should_be_new=false, load_template="")
    at ../gtk2_ardour/ardour_ui.cc:3398
#47 0x000000000071055d in ARDOUR_UI::starting (this=0x1a3a6c0) at ../gtk2_ardour/ardour_ui.cc:1161
#48 0x00007ffff75096de in Gtkmm2ext::UI::run (this=0x1a3a6c0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:281
#49 0x0000000000bfa8d7 in main (argc=1, argv=0x7fffffffd828) at ../gtk2_ardour/main.cc:408
(gdb)