.
Thread 4 (Thread 15734):
#0  0x00007fbb2ed25f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007fbb302a4104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fbb302a49f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fbb315c6d44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007fbb302cb3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fbb2efe7d8c in start_thread (arg=0x7fbb27703700) at pthread_create.c:304
        pd = 0x7fbb27703700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140441797277440, 1180538007269131978, 140734631731216, 140441797278144, 0, 3, -1219257307519531318, -1219278212765595958}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fbb2ed3304d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 24806):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
No locals.
#1  0x00007fbb166c11c8 in ?? () from /usr/lib/libbrasero-utils.so.1
No symbol table info available.
#2  0x00007fbb302cb3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fbb2efe7d8c in start_thread (arg=0x7fbb0bfff700) at pthread_create.c:304
        pd = 0x7fbb0bfff700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140441336936192, 1180538007269131978, 140734631726656, 140441336936896, 0, 3, -1219337574015842614, -1219278212765595958}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007fbb2ed3304d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 24794):
#0  0x00007fbb2ed25f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <value optimized out>
#1  0x00007fbb302a4104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fbb302a49f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fbb2613e69b in ?? () from /usr/lib/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007fbb302cb3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fbb2efe7d8c in start_thread (arg=0x7fbb1552a700) at pthread_create.c:304
        pd = 0x7fbb1552a700
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140441493350144, 1180538007269131978, 140734631726352, 140441493350848, 0, 3, -1219288347785050422, -1219278212765595958}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <value optimized out>
        sp = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007fbb2ed3304d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 15703):
#0  0x00007fbb168dac4c in ?? () from /usr/lib/nautilus/extensions-2.0/libnautilus-brasero-extension.so
No symbol table info available.
#1  0x00007fbb315a6baa in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#2  0x00007fbb30ba481c in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#3  0x00007fbb30bb6019 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#4  0x00007fbb30bbf258 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007fbb30bbf41f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007fbb315a6e21 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#7  0x00007fbb315da8dc in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#8  0x00007fbb30ba481c in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#9  0x00007fbb30bb5e1f in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#10 0x00007fbb30bbefa9 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#11 0x00007fbb30bbf41f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007fbb315a71f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#13 0x00007fbb315a378a in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#14 0x00007fbb302a3bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007fbb302a43a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00007fbb302a49f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007fbb31e47a37 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
No symbol table info available.
#18 0x00000000004427d2 in ?? ()
No symbol table info available.
#19 0x00007fbb2ec6beff in __libc_start_main (main=0x442150, argc=1, ubp_av=0x7fff55bb6848, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff55bb6838) at libc-start.c:226
        result = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 1180538007269131978, 4387616, 140734631733312, 0, 0, -1180868449417574710, -1219278554271070518}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x54ea40, 0x7fff55bb6848}, data = {prev = 0x0, cleanup = 0x0, canceltype = 5564992}}}
        not_first_call = <value optimized out>
#20 0x000000000042f349 in ?? ()
No symbol table info available.
#21 0x00007fff55bb6838 in ?? ()
No symbol table info available.
#22 0x000000000000001c in ?? ()
No symbol table info available.
#23 0x0000000000000001 in ?? ()
No symbol table info available.
#24 0x00007fff55bb8a57 in ?? ()
No symbol table info available.
#25 0x0000000000000000 in ?? ()
No symbol table info available.