.
Thread 2 (Thread 4176):
#0  0x00007f914bb04f93 in poll () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f914bff84a9 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f914bff8c55 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f91512c3a68 in ?? () from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#4  0x00007f91512c42fa in ?? () from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#5  0x00007f91512c4449 in ?? () from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#6  0x00007f91512c47f8 in brasero_burn_blank ()
   from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#7  0x00007f91512c2f37 in ?? () from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#8  0x00007f91512c147a in ?? () from /usr/lib/libbrasero-burn.so.0
No symbol table info available.
#9  0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#10 0x00007f914c8c5598 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#11 0x00007f914c8c6a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#13 0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#14 0x00007f914c8c5598 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#15 0x00007f914c8c6a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#16 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#17 0x00007f914e778495 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#18 0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#19 0x00007f914c8c4e61 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#20 0x00007f914c8c6a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#21 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#22 0x00007f914e77719d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#23 0x00007f914e8240b8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#24 0x00007f914c8b1529 in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#25 0x00007f914c8c51dd in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#26 0x00007f914c8c68b9 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#27 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#28 0x00007f914e93ae9f in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#29 0x00007f914e81c583 in gtk_propagate_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#30 0x00007f914e81d65b in gtk_main_do_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#31 0x00007f914e49180c in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#32 0x00007f914bff48c2 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#33 0x00007f914bff8748 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#34 0x00007f914bff8c55 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#35 0x00007f914e7a344b in gtk_dialog_run () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#36 0x000000000044ce26 in brasero_app_blank ()
No symbol table info available.
#37 0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#38 0x00007f914c8c5598 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#39 0x00007f914c8c6a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#40 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#41 0x00007f914e75e203 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#42 0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#43 0x00007f914c8c4e61 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#44 0x00007f914c8c6a76 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#45 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#46 0x00007f914e93e80e in gtk_widget_activate ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#47 0x00007f914e8324ad in gtk_menu_shell_activate_item ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#48 0x00007f914e833bdb in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#49 0x00007f914e8240b8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#50 0x00007f914c8b15de in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#51 0x00007f914c8c51dd in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#52 0x00007f914c8c68b9 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#53 0x00007f914c8c7033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#54 0x00007f914e93ae9f in ?? () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#55 0x00007f914e81c583 in gtk_propagate_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#56 0x00007f914e81d65b in gtk_main_do_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#57 0x00007f914e49180c in ?? () from /usr/lib/libgdk-x11-2.0.so.0
No symbol table info available.
#58 0x00007f914bff48c2 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#59 0x00007f914bff8748 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#60 0x00007f914bff8c55 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#61 0x00007f914e81daf7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#62 0x000000000044b894 in brasero_app_run_mainwin ()
No symbol table info available.
#63 0x00000000004217ec in main ()
No symbol table info available.
.
Thread 1 (Thread 4209):
#0  0x00007f9151534d3e in brasero_mmc3_get_performance_wrt_spd_desc ()
   from /usr/lib/libbrasero-media.so.0
No symbol table info available.
#1  0x00007f915153d6a0 in ?? () from /usr/lib/libbrasero-media.so.0
No symbol table info available.
#2  0x00007f915153f215 in ?? () from /usr/lib/libbrasero-media.so.0
No symbol table info available.
#3  0x00007f914c01db84 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f914f69c9ca in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#5  0x00007f914bb116dd in clone () from /lib/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.