#0 0x00007f5669ac469c in g_type_check_instance_is_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #1 0x00007f565bc713d6 in unity::launcher::BamfLauncherIcon::UpdateIconGeometries(std::vector, std::allocator > >) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #2 0x00007f565bc72002 in unity::launcher::BamfLauncherIcon::UpdateDesktopQuickList() () from /usr/lib/compiz/libunityshell.so No symbol table info available. #3 0x0000000000000000 in ?? () No symbol table info available.