$ /opt/Ardour-3.1.10-dbg/bin/ardour3 --debug
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /opt/Ardour-3.1.10-dbg/bin/ardour-3.0...done.
(gdb) run
Starting program: /opt/Ardour-3.1.10-dbg/bin/ardour-3.0 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
bnd txt domain [gtk2_ardour3] to /opt/Ardour-3.1.10-dbg/share/locale
Ardour3.1 (construit avec 3.1-10-ged1f310 et GCC version 4.4.6)
Cannot xinstall SIGPIPE error handler
ardour: [INFO]: Chargement du fichier de style par défaut (/opt/Ardour-3.1.10-dbg/etc/ardour3_ui_default.conf) pour l'interface graphique
Chargement du fichier utilisateur "/home/nonsenz/.config/ardour3/ardour3_ui.conf" pour la configuration de l'interface graphique
ardour: [INFO]: Loading ui configuration file /opt/Ardour-3.1.10-dbg/etc/ardour3_ui_dark.rc
ardour: [INFO]: Your system is configured to limit Ardour to only 4096 open files
[New Thread 0x7fffe7f2b700 (LWP 2802)]
ardour: [INFO]: Loading system configuration file /opt/Ardour-3.1.10-dbg/etc/ardour_system.rc
Loading user configuration file /home/nonsenz/.config/ardour3/ardour.rc
Using SSE optimized routines
[New Thread 0x7fffe772a700 (LWP 2803)]
[New Thread 0x7fffe6f29700 (LWP 2804)]
[New Thread 0x7fffe6728700 (LWP 2805)]
[New Thread 0x7fffe58a2800 (LWP 2806)]
[New Thread 0x7fffe502b700 (LWP 2807)]
[New Thread 0x7fffe482a700 (LWP 2808)]
[New Thread 0x7fffd5cd9700 (LWP 2809)]
[New Thread 0x7fffd54d8700 (LWP 2810)]
[New Thread 0x7fffd5457700 (LWP 2811)]
[Thread 0x7fffd5457700 (LWP 2811) exited]
[Thread 0x7fffd54d8700 (LWP 2810) exited]
Announcement is: 
[Thread 0x7fffe58a2800 (LWP 2806) exited]
[Thread 0x7fffe502b700 (LWP 2807) exited]
[Thread 0x7fffe482a700 (LWP 2808) exited]
[New Thread 0x7fffd54d8700 (LWP 2812)]
[New Thread 0x7fffd5457700 (LWP 2813)]
lilv_plugin_load_ports_if_necessary(): error: Plugin <http://home.gna.org/lv2vocoder/1> port symbol `600' is invalid
[New Thread 0x7fffc4131700 (LWP 2814)]
[New Thread 0x7fffc40af800 (LWP 2815)]
[New Thread 0x7fffe482a700 (LWP 2816)]
[New Thread 0x7fffe502b700 (LWP 2817)]
[New Thread 0x7fff9bc0c700 (LWP 2818)]
[Thread 0x7fffd5cd9700 (LWP 2809) exited]
[New Thread 0x7fffd5cd9700 (LWP 2819)]
[New Thread 0x7fff9b25b700 (LWP 2820)]
[Thread 0x7fffd5cd9700 (LWP 2819) exited]

Program received signal SIGSEGV, Segmentation fault.
0x00007fffef77897f in art_uta_add_line ()
   from /opt/Ardour-3.1.10-dbg/lib/libart_lgpl_2.so.2