Thread 8 (process 5049): #0 0x00002b245663ab15 in __nanosleep_nocancel () from /lib/libpthread.so.0 #1 0x00002b24534fd4f8 in g_usleep () from /usr/lib/libglib-2.0.so.0 #2 0x00002b24557c7331 in Glib::usleep (microseconds=10000) at libs/glibmm2/glibmm/timer.cc:68 #3 0x00002b24521e3896 in ARDOUR::AudioEngine::meter_thread (this=0x122ba90) at libs/ardour/audioengine.cc:412 #4 0x00002b24521e6898 in sigc::bound_mem_functor0::operator() (this=0x1005e18) at libs/sigc++2/sigc++/functors/mem_fun.h:1781 #5 0x00002b24521e68b3 in sigc::adaptor_functor >::operator() (this=0x1005e10) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x00002b24521e68d7 in sigc::internal::slot_call0, void>::call_it (rep=0x1005de0) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x000000000075c1c7 in sigc::slot0::operator() (this=0x100ebe0) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0x00002b24557c5968 in call_thread_entry_slot (data=0x100ebe0) at libs/glibmm2/glibmm/thread.cc:43 #9 0x00002b24534fb5a4 in g_thread_create_full () from /usr/lib/libglib-2.0.so.0 #10 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #11 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #12 0x0000000000000000 in ?? () Thread 7 (process 5050): #0 0x00002b2456dcacf6 in poll () from /lib/libc.so.6 #1 0x00002b24534e25ae in g_main_context_check () from /usr/lib/libglib-2.0.so.0 #2 0x00002b24534e2a46 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #3 0x00002aaaab24dcc0 in link_set_io_thread () from /usr/lib/libORBit-2.so.0 #4 0x00002b24534fb5a4 in g_thread_create_full () from /usr/lib/libglib-2.0.so.0 #5 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #6 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #7 0x0000000000000000 in ?? () Thread 6 (process 5053): #0 0x00002b2456dcacf6 in poll () from /lib/libc.so.6 #1 0x00002b245651bb36 in jack_client_close () from /usr/lib/libjack.so.0 #2 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #3 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #4 0x0000000000000000 in ?? () Thread 5 (process 5061): #0 0x00002b2456637d2f in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 #1 0x00002b24533b1600 in ?? () from /usr/lib/libgthread-2.0.so.0 #2 0x00002b24534c3ffa in g_async_queue_sort () from /usr/lib/libglib-2.0.so.0 #3 0x00002b24534fd075 in g_thread_pool_push () from /usr/lib/libglib-2.0.so.0 #4 0x00002b24534fb5a4 in g_thread_create_full () from /usr/lib/libglib-2.0.so.0 #5 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #6 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #7 0x0000000000000000 in ?? () Thread 4 (process 5062): #0 0x00002b2456637d2f in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 #1 0x00002b24533b1600 in ?? () from /usr/lib/libgthread-2.0.so.0 #2 0x00002b24534c3ffa in g_async_queue_sort () from /usr/lib/libglib-2.0.so.0 #3 0x00002b24534fd075 in g_thread_pool_push () from /usr/lib/libglib-2.0.so.0 #4 0x00002b24534fb5a4 in g_thread_create_full () from /usr/lib/libglib-2.0.so.0 #5 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #6 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #7 0x0000000000000000 in ?? () Thread 3 (process 5063): #0 0x00002b2456dcacf6 in poll () from /lib/libc.so.6 #1 0x00002b245230b8b7 in ARDOUR::Session::butler_thread_work (this=0x2aaaacf04200) at libs/ardour/session_butler.cc:176 #2 0x00002b245230c5f3 in ARDOUR::Session::_butler_thread_work (arg=0x2aaaacf04200) at libs/ardour/session_butler.cc:157 #3 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #4 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #5 0x0000000000000000 in ?? () Thread 2 (process 5064): #0 0x00002b2456dcacf6 in poll () from /lib/libc.so.6 #1 0x00002b24523293ec in ARDOUR::Session::midi_thread_work (this=0x2aaaacf04200) at libs/ardour/session_midi.cc:1207 #2 0x00002b2452329901 in ARDOUR::Session::_midi_thread_work (arg=0x2aaaacf04200) at libs/ardour/session_midi.cc:1128 #3 0x00002b2456634f1a in start_thread () from /lib/libpthread.so.0 #4 0x00002b2456dd3602 in clone () from /lib/libc.so.6 #5 0x0000000000000000 in ?? () Thread 1 (process 5046): #0 0x00002b2456d7dfab in memcpy () from /lib/libc.so.6 #1 0x00002b2456a96a72 in std::basic_streambuf >::xsputn () from /usr/lib/libstdc++.so.6 #2 0x00002b2456a8a94a in std::operator<< , std::allocator > () from /usr/lib/libstdc++.so.6 #3 0x0000000000785d5f in StringPrivate::Composition::arg (this=0x7fff58be40a0, obj=@0x7fff58be44c0) at libs/pbd/pbd/compose.h:118 #4 0x00002b24521e80c7 in string_compose (fmt=@0x7fff58be4330, o1=@0x7fff58be43f0, o2=@0x7fff58be42d0, o3=@0x7fff58be44c0, o4=@0x7fff58be42c0) at libs/pbd/pbd/compose.h:237 #5 0x00002b24521e0c43 in ARDOUR::AudioEngine::connect (this=0x122ba90, source=@0x7fff58be43f0, destination=@0x7fff58be44c0) at libs/ardour/audioengine.cc:606 #6 0x00002b24522632dc in ARDOUR::IO::connect_output (this=0x2aaaacf5b320, our_port=0x2aaaacfc1ab0, other_port=@0x7fff58be44c0, src=0x2aaaacf1b210) at libs/ardour/io.cc:734 #7 0x00002b24522b969e in ARDOUR::Route::set_control_outs (this=0x2aaaacf1b210, ports=@0x7fff58be4580) at libs/ardour/route.cc:1843 #8 0x00002b24522dd243 in ARDOUR::Session::hookup_io (this=0x2aaaacf04200) at libs/ardour/session.cc:947 #9 0x00002b24522dee5d in ARDOUR::Session::when_engine_running (this=0x2aaaacf04200) at libs/ardour/session.cc:841 #10 0x00002b24523439a0 in ARDOUR::Session::second_stage_init (this=0x2aaaacf04200, new_session=false) at libs/ardour/session_state.cc:317 #11 0x00002b24522e6ee1 in Session (this=0x2aaaacf04200, eng=@0x122ba90, fullpath=@0x7fff58be4da0, snapshot_name=@0x7fff58be4db0, mix_template=0x0) at libs/ardour/session.cc:299 #12 0x0000000000767f66 in ARDOUR_UI::load_session (this=0xdf2250, path=@0x7fff58be4ed0, snap_name=@0x7fff58be4ee0, mix_template=0x0) at gtk2_ardour/ardour_ui.cc:2021 #13 0x0000000000768852 in ARDOUR_UI::new_session (this=0xdf2250, predetermined_path=@0x7fff58be5080) at gtk2_ardour/ardour_ui.cc:1853 #14 0x00000000009c9592 in maybe_load_session () at gtk2_ardour/main.cc:130 #15 0x00000000009ca5fb in main (argc=1, argv=0x7fff58be5328) at gtk2_ardour/main.cc:295