. Thread 4 (Thread 0x7f31dbfff700 (LWP 12072)): #0 0x00007f31f48f4703 in select () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f31e4592e4c in ?? () from /usr/lib/libtcl8.5.so.0 No symbol table info available. #2 0x00007f31f5c76e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #3 0x00007f31f48fb39d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #4 0x0000000000000000 in ?? () No symbol table info available. . Thread 3 (Thread 0x7f31ecfdb700 (LWP 12070)): #0 0x00007f31f48ef9e3 in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f31f4c0de84 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007f31e800eb00 in ?? () No symbol table info available. #3 0x0000000000000000 in ?? () No symbol table info available. . Thread 2 (Thread 0x7f31ed7dc700 (LWP 12069)): #0 0x00007f31f48ef9e3 in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007f31f4c0de84 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00000000011b4d30 in ?? () No symbol table info available. #3 0x0000000000000001 in ?? () No symbol table info available. #4 0x00007fffe774aa60 in ?? () No symbol table info available. #5 0x00007f31ed7dc9c0 in ?? () No symbol table info available. #6 0x0000000000000000 in ?? () No symbol table info available. . Thread 1 (Thread 0x7f31f740e940 (LWP 12065)): #0 0x00007f31f5a50e8c in g_type_interface_get_plugin () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #1 0x0000000000000000 in ?? () No symbol table info available.