Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffd9e1b700 (LWP 1095)]
0x0000000000000000 in ?? ()
(gdb) thread apply all bt

Thread 20 (Thread 0x7fffb7e02820 (LWP 1096)):
#0  0x00007ffff0c428dd in nanosleep ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff41596d2 in g_usleep ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff6dc3af0 in ARDOUR::AudioEngine::meter_thread (this=0x2d588a0)
    at ../libs/ardour/audioengine.cc:697
#3  0x00007ffff6de358e in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x7fffbcef6a60, p=0x2d588a0)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6ddeb64 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x7fffbcef6a70, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007ffff6dda575 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x7fffbcef6a60) at /usr/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff6dd5846 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=0x7fffbcef6a60)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff6dd14d0 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=0x7fffbcef6a30)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff4a7ab3d in ?? () from /usr/lib/libglibmm-2.4.so.1
#9  0x00007ffff41562b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 19 (Thread 0x7fffd9e1b700 (LWP 1095)):
#0  0x0000000000000000 in ?? ()
#1  0x00000000012f4a1e in boost::function0<void>::operator() (
    this=0x7fffbcf166f0)
    at /usr/include/boost/function/function_template.hpp:1013
#2  0x00007ffff6fda736 in ARDOUR::MidiControlUI::do_request (
    this=0x7fffbceba680, req=0x7fffbcf166e0) at ../libs/ardour/midi_ui.cc:78
#3  0x00007ffff6fe486b in AbstractUI<ARDOUR::MidiUIRequest>::handle_ui_requests
    (this=0x7fffbceba680)
    at /home/lsd/ardour3/3.0/libs/pbd/pbd/abstract_ui.cc:182
#4  0x00007ffff4fcd565 in BaseUI::request_handler (this=0x7fffbceba680, 
    ioc=Glib::IO_IN) at ../libs/pbd/base_ui.cc:122
#5  0x00007ffff4fce599 in sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition>::operator() (this=0x7fffbceba8b8, _A_a1=@0x7fffd9e1a9fc)
---Type <return> to continue, or q <return> to quit---
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1851
#6  0x00007ffff4fce385 in sigc::adaptor_functor<sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition> >::operator()<Glib::IOCondition const&> (
    this=0x7fffbceba8b0, _A_arg1=@0x7fffd9e1a9fc)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:84
#7  0x00007ffff4fce0b4 in sigc::internal::slot_call1<sigc::bound_mem_functor1<bool, BaseUI, Glib::IOCondition>, bool, Glib::IOCondition>::call_it (
    rep=0x7fffbceba880, a_1=@0x7fffd9e1a9fc)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:137
#8  0x00007ffff4a80dcc in Glib::IOSource::dispatch(sigc::slot_base*) ()
   from /usr/lib/libglibmm-2.4.so.1
#9  0x00007ffff4a809df in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/libglibmm-2.4.so.1
#10 0x00007ffff4130a5d in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff4131258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff4131792 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ffff4fcd2af in BaseUI::main_thread (this=0x7fffbceba680)
    at ../libs/pbd/base_ui.cc:77
#14 0x00007ffff4fce653 in sigc::bound_mem_functor0<void, BaseUI>::operator() (
    this=0x7fffbcebacb8)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
---Type <return> to continue, or q <return> to quit---
#15 0x00007ffff4fce4b8 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x7fffbcebacb0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#16 0x00007ffff4fce229 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x7fffbcebac80)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#17 0x00007ffff4a7ab3d in ?? () from /usr/lib/libglibmm-2.4.so.1
#18 0x00007ffff41562b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#20 0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#21 0x0000000000000000 in ?? ()

Thread 18 (Thread 0x7fffb7e7d820 (LWP 1094)):
#0  0x00007fffefe59473 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff6e4065d in ARDOUR::Butler::thread_work (this=0x38de190)
    at ../libs/ardour/butler.cc:150
#2  0x00007ffff6e405b7 in ARDOUR::Butler::_thread_work (arg=0x38de190)
    at ../libs/ardour/butler.cc:134
#3  0x00007ffff5003f24 in fake_thread_start (arg=0x3a66950)
    at ../libs/pbd/pthread_utils.cc:81
#4  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#5  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7fffb7eff700 (LWP 1093)):
#0  0x00007ffff0c41300 in sem_wait ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff6f1731e in PBD::ProcessSemaphore::wait (this=0x38e0f08)
    at /home/lsd/ardour3/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff6f158bf in ARDOUR::Graph::run_one (this=0x38e0e50)
    at ../libs/ardour/graph.cc:376
#3  0x00007ffff6f15c19 in ARDOUR::Graph::helper_thread (this=0x38e0e50)
    at ../libs/ardour/graph.cc:407
#4  0x00007ffff6f1ad00 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffb7efebc8, p=0x38e0e50)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6f1a956 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffb7efebd8, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#6  0x00007ffff6f1a649 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffb7efebc8) at /usr/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff6f1a20b in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<---Type <return> to continue, or q <return> to quit---
boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:153
#8  0x00000000012f4a1e in boost::function0<void>::operator() (
    this=0x7fffb7efebc0)
    at /usr/include/boost/function/function_template.hpp:1013
#9  0x00007ffff6dc6e05 in ARDOUR::AudioEngine::_start_process_thread (
    arg=0x38f14d0) at ../libs/ardour/audioengine.cc:1506
#10 0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fffb7f80700 (LWP 1092)):
#0  0x00007ffff0c41300 in sem_wait ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff6f1731e in PBD::ProcessSemaphore::wait (this=0x38e0f28)
    at /home/lsd/ardour3/3.0/libs/pbd/pbd/semutils.h:41
#2  0x00007ffff6f15c93 in ARDOUR::Graph::main_thread (this=0x38e0e50)
    at ../libs/ardour/graph.cc:426
#3  0x00007ffff6f1ad00 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffb7f7fbc8, p=0x38e0e50)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6f1a956 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >:---Type <return> to continue, or q <return> to quit---
:operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffb7f7fbd8, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007ffff6f1a649 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffb7f7fbc8) at /usr/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff6f1a20b in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/include/boost/function/function_template.hpp:153
#7  0x00000000012f4a1e in boost::function0<void>::operator() (
    this=0x7fffb7f7fbc0)
    at /usr/include/boost/function/function_template.hpp:1013
#8  0x00007ffff6dc6e05 in ARDOUR::AudioEngine::_start_process_thread (
    arg=0x38f12d0) at ../libs/ardour/audioengine.cc:1506
#9  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7ffff7ebc700 (LWP 1091)):
#0  0x00007fffefe59473 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff0e58756 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007ffff0e58ada in jack_cycle_wait ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007ffff6dc2cf4 in ARDOUR::AudioEngine::process_thread (this=0x2d588a0)
    at ../libs/ardour/audioengine.cc:444
#4  0x00007ffff6dc268c in ARDOUR::AudioEngine::_process_thread (arg=0x2d588a0)
    at ../libs/ardour/audioengine.cc:342
#5  0x00007ffff0e589d2 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#6  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7fffda6e9700 (LWP 1083)):
#0  0x00007ffff0c3f04c in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff0e59f93 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffe1ab6700 (LWP 1067)):
#0  0x00007ffff0c3f04c in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#1  0x00007ffff6d703ed in ARDOUR::Analyser::work ()
    at ../libs/ardour/analyser.cc:85
#2  0x00007ffff6d70185 in analyser_work () at ../libs/ardour/analyser.cc:49
#3  0x0000000001883021 in sigc::pointer_functor0<void>::operator() (
    this=0x2905488) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000001880796 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x2905480)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#5  0x000000000187d73d in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x2905450)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff4a7ab3d in ?? () from /usr/lib/libglibmm-2.4.so.1
#7  0x00007ffff41562b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffe22b7700 (LWP 1066)):
#0  0x00007ffff0c3f04c in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff7202c71 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
---Type <return> to continue, or q <return> to quit---
#2  0x0000000001883021 in sigc::pointer_functor0<void>::operator() (
    this=0x2905378) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x0000000001880796 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x2905370)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000187d73d in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x2905340)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff4a7ab3d in ?? () from /usr/lib/libglibmm-2.4.so.1
#6  0x00007ffff41562b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fffe2ab8700 (LWP 1064)):
#0  0x00007ffff0c3f04c in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff7202c71 in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:68
#2  0x0000000001883021 in sigc::pointer_functor0<void>::operator() (
    this=0x2905d68) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x0000000001880796 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::---Type <return> to continue, or q <return> to quit---
operator() (this=0x2905d60)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x000000000187d73d in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x2905d30)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff4a7ab3d in ?? () from /usr/lib/libglibmm-2.4.so.1
#6  0x00007ffff41562b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fffe32b9700 (LWP 1063)):
#0  0x00007fffefe3121d in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fffefe5ee54 in usleep () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x0000000001acc947 in gui_event_loop (ptr=0x0)
    at ../gtk2_ardour/linux_vst_gui_support.cc:363
#3  0x00007ffff0c3aefc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fffefe6559d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7f999e0 (LWP 1060)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007ffff6e2e5a5 in ARDOUR::BufferManager::put_thread_buffers (
    tbp=0x7fffffffcb40) at ../libs/ardour/buffer_manager.cc:66
#1  0x00007ffff706a974 in ARDOUR::ProcessThread::drop_buffers (this=0x389cba0)
    at ../libs/ardour/process_thread.cc:68
#2  0x00007ffff71879be in ARDOUR::Session::process (this=0x38d5690, 
    nframes=128) at ../libs/ardour/session_process.cc:84
#3  0x00007ffff6dc3c50 in ARDOUR::AudioEngine::set_session (this=0x2d588a0, 
    s=0x38d5690) at ../libs/ardour/audioengine.cc:729
#4  0x00007ffff70fe9d8 in ARDOUR::Session::when_engine_running (this=0x38d5690)
    at ../libs/ardour/session.cc:567
#5  0x00007ffff7192262 in ARDOUR::Session::second_stage_init (this=0x38d5690)
    at ../libs/ardour/session_state.cc:354
#6  0x00007ffff70fa5b9 in ARDOUR::Session::Session (this=0x38d5690, eng=..., 
    fullpath=..., snapshot_name=..., bus_profile=0x7fffffffd3b0, 
    mix_template=...) at ../libs/ardour/session.cc:200
#7  0x00000000012b7e63 in ARDOUR_UI::build_session (this=0x26a4930, path=..., 
    snap_name=..., bus_profile=...) at ../gtk2_ardour/ardour_ui.cc:2799
#8  0x00000000012b5f2e in ARDOUR_UI::build_session_from_nsd (this=0x26a4930, 
    session_path=..., session_name=...) at ../gtk2_ardour/ardour_ui.cc:2409
#9  0x00000000012b6c9f in ARDOUR_UI::get_session_parameters (this=0x26a4930, 
    quit_on_cancel=true, should_be_new=false, load_template=...)
    at ../gtk2_ardour/ardour_ui.cc:2612
#10 0x00000000012ad985 in ARDOUR_UI::startup (this=0x26a4930)
---Type <return> to continue, or q <return> to quit---
    at ../gtk2_ardour/ardour_ui.cc:667
#11 0x00000000012da61d in sigc::bound_mem_functor0<void, ARDOUR_UI>::operator()
    (this=0x2b6b078) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#12 0x00000000012d4b06 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR_UI> >::operator() (this=0x2b6b070)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#13 0x00000000012ceeaf in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR_UI>, void>::call_it (rep=0x2b6b040)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
#14 0x0000000001296413 in sigc::internal::signal_emit0<void, sigc::nil>::emit (
    impl=0x2b6aff0) at /usr/include/sigc++-2.0/sigc++/signal.h:776
#15 0x0000000001298258 in sigc::signal0<void, sigc::nil>::emit (this=0x26a49f0)
    at /usr/include/sigc++-2.0/sigc++/signal.h:2673
#16 0x0000000001297610 in sigc::signal0<void, sigc::nil>::operator() (
    this=0x26a49f0) at /usr/include/sigc++-2.0/sigc++/signal.h:2681
#17 0x00007ffff5463a44 in Gtkmm2ext::UI::run (this=0x26a4930, old_receiver=...)
    at ../libs/gtkmm2ext/gtk_ui.cc:264
#18 0x00000000016d1bad in main (argc=1, argv=0x7fffffffdaa8)
    at ../gtk2_ardour/main.cc:555