Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1238317376 (LWP 29425)] 0xb67c2a8b in ?? () from /lib/tls/i686/cmov/libc.so.6 (gdb) thread apply all bt Thread 23 (Thread -1312736080 (LWP 29453)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb68225e7 in poll () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7e524e0 in ARDOUR::Session::midi_thread_work (this=0x909a4f0) at libs/ardour/session_midi.cc:1220 #3 0xb7e52a6d in ARDOUR::Session::_midi_thread_work (arg=0x909a4f0) at libs/ardour/session_midi.cc:1141 #4 0xb69b646b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #5 0xb682c6de in clone () from /lib/tls/i686/cmov/libc.so.6 Thread 22 (Thread -1300816720 (LWP 29452)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb68225e7 in poll () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7e34010 in ARDOUR::Session::butler_thread_work (this=0x909a4f0) at libs/ardour/session_butler.cc:176 #3 0xb7e34dd3 in ARDOUR::Session::_butler_thread_work (arg=0x909a4f0) at libs/ardour/session_butler.cc:157 #4 0xb69b646b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #5 0xb682c6de in clone () from /lib/tls/i686/cmov/libc.so.6 Thread 21 (Thread -1320162416 (LWP 29451)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb68225e7 in poll () from /lib/tls/i686/cmov/libc.so.6 #2 0xb69cfe3a in ?? () from /usr/lib/libjack.so.0 #3 0x08d73780 in ?? () #4 0x00000002 in ?? () #5 0x00000001 in ?? () #6 0x00000000 in ?? () Thread 20 (Thread -1297494864 (LWP 29450)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb69bd9f6 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb7585962 in g_usleep () from /usr/lib/libglib-2.0.so.0 #3 0xb6cb24d5 in Glib::usleep (microseconds=10000) at libs/glibmm2/glibmm/timer.cc:68 #4 0xb7d01a40 in ARDOUR::AudioEngine::meter_thread (this=0x8dc1308) at libs/ardour/audioengine.cc:431 #5 0xb7d0478e in sigc::bound_mem_functor0::operator() (this=0x8dc805c) at libs/sigc++2/sigc++/functors/mem_fun.h:1781 #6 0xb7d047b0 in sigc::adaptor_functor >::operator() ( this=0x8dc8058) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #7 0xb7d047dc in sigc::internal::slot_call0, void>::call_it ( rep=0x8dc8040) at libs/sigc++2/sigc++/functors/slot.h:103 #8 0x083b3268 in sigc::slot0::operator() (this=0x8d18f80) at libs/sigc++2/sigc++/functors/slot.h:440 #9 0xb6cb33f7 in call_thread_entry_slot (data=0x8d18f80) at libs/glibmm2/glibmm/thread.cc:43 #10 0xb75835af in ?? () from /usr/lib/libglib-2.0.so.0 #11 0x08d18f80 in ?? () #12 0x08d2fda8 in ?? () #13 0x00000000 in ?? () Thread 3 (Thread -1249236080 (LWP 29429)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb69ba676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb6cb2999 in Glib::Cond::wait (this=0x8b36178, mutex=@0xb7f2d984) at libs/glibmm2/glibmm/thread.cc:362 #3 0xb7e8bf91 in peak_thread_work () at libs/ardour/source_factory.cc:61 #4 0x086db6a5 in sigc::pointer_functor0::operator() (this=0x8b41cc4) at libs/sigc++2/sigc++/functors/ptr_fun.h:77 #5 0x086db6bc in sigc::adaptor_functor >::operator() (this=0x8b41cc0) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x086db6d8 in sigc::internal::slot_call0, void>::call_it (rep=0x8b41ca8) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x083b3268 in sigc::slot0::operator() (this=0x8b41c98) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0xb6cb33f7 in call_thread_entry_slot (data=0x8b41c98) at libs/glibmm2/glibmm/thread.cc:43 #9 0xb75835af in ?? () from /usr/lib/libglib-2.0.so.0 #10 0x08b41c98 in ?? () #11 0x08b41cd0 in ?? () #12 0x00000000 in ?? () Thread 2 (Thread -1240843376 (LWP 29428)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb69ba676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb6cb2999 in Glib::Cond::wait (this=0x8b36178, mutex=@0xb7f2d984) at libs/glibmm2/glibmm/thread.cc:362 #3 0xb7e8bf91 in peak_thread_work () at libs/ardour/source_factory.cc:61 #4 0x086db6a5 in sigc::pointer_functor0::operator() (this=0x8b41bcc) at libs/sigc++2/sigc++/functors/ptr_fun.h:77 #5 0x086db6bc in sigc::adaptor_functor >::operator() (this=0x8b41bc8) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x086db6d8 in sigc::internal::slot_call0, void>::call_it (rep=0x8b41bb0) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x083b3268 in sigc::slot0::operator() (this=0x8b41660) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0xb6cb33f7 in call_thread_entry_slot (data=0x8b41660) at libs/glibmm2/glibmm/thread.cc:43 #9 0xb75835af in ?? () from /usr/lib/libglib-2.0.so.0 #10 0x08b41660 in ?? () #11 0x08b41bd8 in ?? () #12 0xb69b1000 in ?? () #13 0x00015084 in ?? () #14 0xb6760a6c in ?? () from /lib/tls/i686/cmov/libc.so.6 #15 0xb69c5ff4 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 #16 0xb69b8530 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 #12 0x08d2fda8 in ?? () #13 0x00000000 in ?? () Thread 3 (Thread -1249236080 (LWP 29429)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb69ba676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb6cb2999 in Glib::Cond::wait (this=0x8b36178, mutex=@0xb7f2d984) at libs/glibmm2/glibmm/thread.cc:362 #3 0xb7e8bf91 in peak_thread_work () at libs/ardour/source_factory.cc:61 #4 0x086db6a5 in sigc::pointer_functor0::operator() (this=0x8b41cc4) at libs/sigc++2/sigc++/functors/ptr_fun.h:77 #5 0x086db6bc in sigc::adaptor_functor >::operator() (this=0x8b41cc0) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x086db6d8 in sigc::internal::slot_call0, void>::call_it (rep=0x8b41ca8) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x083b3268 in sigc::slot0::operator() (this=0x8b41c98) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0xb6cb33f7 in call_thread_entry_slot (data=0x8b41c98) at libs/glibmm2/glibmm/thread.cc:43 #9 0xb75835af in ?? () from /usr/lib/libglib-2.0.so.0 #10 0x08b41c98 in ?? () #11 0x08b41cd0 in ?? () #12 0x00000000 in ?? () Thread 2 (Thread -1240843376 (LWP 29428)): #0 0xffffe410 in __kernel_vsyscall () #1 0xb69ba676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 #2 0xb6cb2999 in Glib::Cond::wait (this=0x8b36178, mutex=@0xb7f2d984) at libs/glibmm2/glibmm/thread.cc:362 #3 0xb7e8bf91 in peak_thread_work () at libs/ardour/source_factory.cc:61 #4 0x086db6a5 in sigc::pointer_functor0::operator() (this=0x8b41bcc) at libs/sigc++2/sigc++/functors/ptr_fun.h:77 #5 0x086db6bc in sigc::adaptor_functor >::operator() (this=0x8b41bc8) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x086db6d8 in sigc::internal::slot_call0, void>::call_it (rep=0x8b41bb0) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x083b3268 in sigc::slot0::operator() (this=0x8b41660) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0xb6cb33f7 in call_thread_entry_slot (data=0x8b41660) at libs/glibmm2/glibmm/thread.cc:43 #9 0xb75835af in ?? () from /usr/lib/libglib-2.0.so.0 #10 0x08b41660 in ?? () #11 0x08b41bd8 in ?? () #12 0xb69b1000 in ?? () #13 0x00015084 in ?? () #14 0xb6760a6c in ?? () from /lib/tls/i686/cmov/libc.so.6 #15 0xb69c5ff4 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 #16 0xb69b8530 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 ---Type to continue, or q to quit--- #17 0xb69c5ff4 in ?? () from /lib/tls/i686/cmov/libpthread.so.0 #18 0x00000000 in ?? () Thread 1 (Thread -1238317376 (LWP 29425)): #0 0xb67c2a8b in ?? () from /lib/tls/i686/cmov/libc.so.6 #1 0x09a83de8 in ?? () #2 0x09a856e0 in ?? () #3 0x09a9a4c0 in ?? () #4 0x00000300 in ?? () #5 0x00000000 in ?? ()