.
Thread 2 (Thread 0x7f84dcf79700 (LWP 7568)):
#0  0x00007f84e4f59773 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f84e6032f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f84e6033792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f84e3639516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f84e60582b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f84e5bcfefc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f84e4f6589d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f84e7cf19c0 (LWP 7566)):
#0  0x00007f84cec4e733 in gnome_bg_load_from_preferences () from /usr/lib/libgnome-desktop-3.so.2
No symbol table info available.
#1  0x00007f84d0f5c28b in unity::BGHash::BGHash() () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#2  0x00007f84d1056b5f in UnityScreen::UnityScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#3  0x00007f84d1062948 in PluginClassHandler<UnityScreen, CompScreen, 0>::get(CompScreen*) () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#4  0x00007f84d1062aec in CompPlugin::VTableForScreenAndWindow<UnityScreen, UnityWindow>::initScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
No symbol table info available.
#5  0x0000000000459c2a in CompManager::initPlugin(CompPlugin*) ()
No symbol table info available.
#6  0x000000000045b7ee in CompPlugin::push(CompPlugin*) ()
No symbol table info available.
#7  0x00000000004315ef in PrivateScreen::updatePlugins() ()
No symbol table info available.
#8  0x0000000000431ab3 in PrivateScreen::processEvents() ()
No symbol table info available.
#9  0x000000000045e751 in CompEventSource::callback() ()
No symbol table info available.
#10 0x00007f84e652adaf in ?? () from /usr/lib/libglibmm-2.4.so.1
No symbol table info available.
#11 0x00007f84e6032a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#12 0x00007f84e6033258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007f84e6033792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x000000000042e856 in CompScreen::eventLoop() ()
No symbol table info available.
#15 0x000000000042221a in main ()
No symbol table info available.