!! killing thread by force !! [Thread 0x7fff30ff96c0 (LWP 19879) exited] [Thread 0x7fff12ffd6c0 (LWP 19866) exited] FATAL: exception not rethrown Thread 164 "ArdourGUI" received signal SIGABRT, Aborted. [Switching to Thread 0x7fff13fff6c0 (LWP 19888)] 0x00007ffff44bf8ec in ?? () from /usr/lib/libc.so.6 (gdb) thread apply all bt Thread 164 (Thread 0x7fff13fff6c0 (LWP 19888) "ArdourGUI" (Exiting)): #0 0x00007ffff44bf8ec in () at /usr/lib/libc.so.6 #1 0x00007ffff4470ea8 in raise () at /usr/lib/libc.so.6 #2 0x00007ffff445a53d in abort () at /usr/lib/libc.so.6 #3 0x00007ffff445b29e in () at /usr/lib/libc.so.6 #4 0x00007ffff44b33eb in () at /usr/lib/libc.so.6 #5 0x00007ffff44c6086 in () at /usr/lib/libc.so.6 #6 0x00007fff7186e59f in juce::Thread::threadEntryPoint() () at /usr/lib/vst3/DecentSampler.vst3/Contents/x86_64-linux/DecentSampler.so #7 0x00007fff715d7b19 in () at /usr/lib/vst3/DecentSampler.vst3/Contents/x86_64-linux/DecentSampler.so #8 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #9 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 107 (Thread 0x7fffb27fc6c0 (LWP 19752) "AutomationWatch"): #0 0x00007ffff4504db5 in clock_nanosleep () at /usr/lib/libc.so.6 #1 0x00007ffff4509987 in nanosleep () at /usr/lib/libc.so.6 #2 0x00007ffff6882491 in g_usleep () at /usr/lib/libglib-2.0.so.0 #3 0x00007ffff75073c6 in ARDOUR::AutomationWatch::thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 106 (Thread 0x7fffb37fe6c0 (LWP 19751) "autoconnect"): #0 0x00007ffff44ba766 in () at /usr/lib/libc.so.6 #1 0x00007ffff44bcf90 in pthread_cond_wait () at /usr/lib/libc.so.6 #2 0x00007ffff7a913e6 in ARDOUR::Session::auto_connect_thread_run() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff7a9181e in ARDOUR::Session::auto_connect_thread(void*) () at /usr/lib/ardour7/libardour.so.3 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 105 (Thread 0x7fffd14446c0 (LWP 19750) "SessionSignals"): #0 0x00007ffff44ba766 in () at /usr/lib/libc.so.6 #1 0x00007ffff44bcf90 in pthread_cond_wait () at /usr/lib/libc.so.6 #2 0x00007ffff7b01275 in ARDOUR::Session::emit_thread_run() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff7b012ae in ARDOUR::Session::emit_thread(void*) () at /usr/lib/ardour7/libardour.so.3 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 104 (Thread 0x7fff73fff6c0 (LWP 19746) "midiUI"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff68aec2f in () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff6856d8f in g_main_loop_run () at /usr/lib/libglib-2.0.so.0 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 103 (Thread 0x7fffb02cc6c0 (LWP 19745) "butler"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff6bfb85d in CrossThreadChannel::poll_for_request() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff6bfb8e3 in CrossThreadChannel::receive(char&, bool) () at /usr/lib/ardour7/libpbd.so.4 #3 0x00007ffff7513b5a in ARDOUR::Butler::thread_work() () at /usr/lib/ardour7/libardour.so.3 --Type for more, q to quit, c to continue without paging--c #4 0x00007ffff6c248aa in () at /usr/lib/ardour7/libpbd.so.4 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 96 (Thread 0x7fffb03906c0 (LWP 19738) "RT-11-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 95 (Thread 0x7fffb04116c0 (LWP 19737) "RT-10-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 94 (Thread 0x7fffb04926c0 (LWP 19736) "RT-9-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 93 (Thread 0x7fffb05136c0 (LWP 19735) "RT-8-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 92 (Thread 0x7fffb05946c0 (LWP 19734) "RT-7-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 91 (Thread 0x7fffb06156c0 (LWP 19733) "RT-6-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 90 (Thread 0x7fffb06966c0 (LWP 19732) "RT-5-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 89 (Thread 0x7fffb07176c0 (LWP 19731) "RT-4-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 88 (Thread 0x7fffb07986c0 (LWP 19730) "RT-3-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 87 (Thread 0x7fffb10d76c0 (LWP 19729) "RT-2-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 86 (Thread 0x7fffb11586c0 (LWP 19728) "RT-1-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d6c8 in ARDOUR::Graph::reached_terminal_node() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dae1 in ARDOUR::Graph::helper_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 85 (Thread 0x7fffb11d96c0 (LWP 19727) "RT-main-(nil)"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff6c290db in PBD::Semaphore::wait() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff760d80e in ARDOUR::Graph::run_one() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff760dce9 in ARDOUR::Graph::main_thread() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007fffd25073b2 in ARDOUR::JACKAudioBackend::_start_process_thread(void*) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 52 (Thread 0x7fffb1b986c0 (LWP 19685) "audioengine"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff1a6bafc in () at /usr/lib/libjack.so.0 #2 0x00007ffff1a4d75a in () at /usr/lib/libjack.so.0 #3 0x00007ffff1a4b700 in () at /usr/lib/libjack.so.0 #4 0x00007fffd2506a84 in ARDOUR::JACKAudioBackend::process_thread() () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff1a4bba4 in () at /usr/lib/libjack.so.0 #6 0x00007ffff1a69c61 in () at /usr/lib/libjack.so.0 #7 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #8 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 51 (Thread 0x7fffb1f076c0 (LWP 19684) "audioengine"): #0 0x00007ffff452e96c in read () at /usr/lib/libc.so.6 #1 0x00007ffff1a6af3a in () at /usr/lib/libjack.so.0 #2 0x00007ffff1a6fea1 in () at /usr/lib/libjack.so.0 #3 0x00007ffff1a6fcd7 in () at /usr/lib/libjack.so.0 #4 0x00007ffff1a69c61 in () at /usr/lib/libjack.so.0 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 50 (Thread 0x7fffd02d26c0 (LWP 19683) "audioengine"): #0 0x00007ffff44ba766 in () at /usr/lib/libc.so.6 #1 0x00007ffff44bcf90 in pthread_cond_wait () at /usr/lib/libc.so.6 #2 0x00007ffff1a6a786 in () at /usr/lib/libjack.so.0 #3 0x00007ffff1a5e7ce in () at /usr/lib/libjack.so.0 #4 0x00007ffff1a69c61 in () at /usr/lib/libjack.so.0 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 49 (Thread 0x7fffb0ff96c0 (LWP 19676) "threaded-ml"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff1bde8c7 in () at /usr/lib/libpulse.so.0 #2 0x00007ffff1bc846c in pa_mainloop_poll () at /usr/lib/libpulse.so.0 #3 0x00007ffff1bd242c in pa_mainloop_iterate () at /usr/lib/libpulse.so.0 #4 0x00007ffff1bd24e1 in pa_mainloop_run () at /usr/lib/libpulse.so.0 #5 0x00007ffff1be2c02 in () at /usr/lib/libpulse.so.0 #6 0x00007fffe45d4c57 in () at /usr/lib/pulseaudio/libpulsecommon-16.1.so #7 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #8 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 39 (Thread 0x7fffd1c456c0 (LWP 19666) "gdbus"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff68aec2f in () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff6856d8f in g_main_loop_run () at /usr/lib/libglib-2.0.so.0 #3 0x00007ffff600aaec in () at /usr/lib/libgio-2.0.so.0 #4 0x00007ffff6884db5 in () at /usr/lib/libglib-2.0.so.0 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 38 (Thread 0x7fffd0bbd6c0 (LWP 19665) "gmain"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff68aec2f in () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff68560e2 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0 #3 0x00007ffff6856132 in () at /usr/lib/libglib-2.0.so.0 #4 0x00007ffff6884db5 in () at /usr/lib/libglib-2.0.so.0 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 9 (Thread 0x7fffd2e196c0 (LWP 19633) "DeviceList"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff68a7e55 in g_cond_wait () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff74ac7dc in ARDOUR::AudioEngine::do_devicelist_update() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 8 (Thread 0x7fffd37fe6c0 (LWP 19632) "EngineWatchdog"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff68a7e55 in g_cond_wait () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff74ad739 in ARDOUR::AudioEngine::do_reset_backend() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 6 (Thread 0x7fffd3fff6c0 (LWP 19628) "Analyzer"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff68a7e55 in g_cond_wait () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff7464900 in ARDOUR::Analyser::work() () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 5 (Thread 0x7fffe0ef46c0 (LWP 19627) "PeakFileBuilder"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff68a7e55 in g_cond_wait () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff7b9f8ac in () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 4 (Thread 0x7fffe16f56c0 (LWP 19626) "PeakFileBuilder"): #0 0x00007ffff45380dd in syscall () at /usr/lib/libc.so.6 #1 0x00007ffff68a7e55 in g_cond_wait () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff7b9f8ac in () at /usr/lib/ardour7/libardour.so.3 #3 0x00007ffff6c251ca in PBD::Thread::_run(void*) () at /usr/lib/ardour7/libpbd.so.4 #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 3 (Thread 0x7fffe1ef66c0 (LWP 19625) "LXVSTEventLoop"): #0 0x00007ffff4504db5 in clock_nanosleep () at /usr/lib/libc.so.6 #1 0x00007ffff4509987 in nanosleep () at /usr/lib/libc.so.6 #2 0x00007ffff6882491 in g_usleep () at /usr/lib/libglib-2.0.so.0 #3 0x00005555566a0797 in () #4 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #5 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 2 (Thread 0x7fffe24436c0 (LWP 19624) "Trigger Worker"): #0 0x00007ffff45329df in poll () at /usr/lib/libc.so.6 #1 0x00007ffff6bfb85d in CrossThreadChannel::poll_for_request() () at /usr/lib/ardour7/libpbd.so.4 #2 0x00007ffff6bfb8e3 in CrossThreadChannel::receive(char&, bool) () at /usr/lib/ardour7/libpbd.so.4 #3 0x00007ffff7bf68ca in ARDOUR::TriggerBoxThread::thread_work() () at /usr/lib/ardour7/libardour.so.3 #4 0x00007ffff6c248aa in () at /usr/lib/ardour7/libpbd.so.4 #5 0x00007ffff44bdbb5 in () at /usr/lib/libc.so.6 #6 0x00007ffff453fd90 in () at /usr/lib/libc.so.6 Thread 1 (Thread 0x7fffe40d9040 (LWP 19621) "ArdourGUI"): #0 0x00007ffff4504db5 in clock_nanosleep () at /usr/lib/libc.so.6 #1 0x00007ffff4509987 in nanosleep () at /usr/lib/libc.so.6 #2 0x00007ffff4535aa9 in usleep () at /usr/lib/libc.so.6 #3 0x00007ffff1a46d72 in jack_port_get_connections () at /usr/lib/libjack.so.0 #4 0x00007fffd2511c99 in ARDOUR::JACKAudioBackend::connected(boost::shared_ptr const&, bool) () at /usr/lib/ardour7/backends/libjack_audiobackend.so #5 0x00007ffff79c0f70 in ARDOUR::PortManager::check_for_ambiguous_latency(bool) const () at /usr/lib/ardour7/libardour.so.3 #6 0x0000555555b862f1 in () #7 0x00007ffff6cd5563 in AbstractUI::handle_ui_requests() () at /usr/lib/ardour7/libgtkmm2ext.so.0 #8 0x00007ffff6bec32f in BaseUI::request_handler(Glib::IOCondition) () at /usr/lib/ardour7/libpbd.so.4 #9 0x00007ffff6bfb0eb in cross_thread_channel_call_receive_slot(_GIOChannel*, GIOCondition, void*) () at /usr/lib/ardour7/libpbd.so.4 #10 0x00007ffff685782b in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #11 0x00007ffff68aecc9 in () at /usr/lib/libglib-2.0.so.0 #12 0x00007ffff6856d8f in g_main_loop_run () at /usr/lib/libglib-2.0.so.0 #13 0x00007ffff63339fe in gtk_main () at /usr/lib/libgtk-x11-2.0.so.0 #14 0x00007ffff6cccf78 in Gtkmm2ext::UI::run(Receiver&) () at /usr/lib/ardour7/libgtkmm2ext.so.0 #15 0x0000555555b19aaf in main ()