#0  0x41534440 in pthread_mutex_lock () from /lib/arm-linux-gnueabihf/libpthread.so.0
No symbol table info available.
#1  0x41449a70 in pthread_mutex_lock () from /lib/arm-linux-gnueabihf/libc.so.6
No symbol table info available.
#2  0x41168702 in mir::client::DisplayConfiguration::copy_to_client() const () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.3
No symbol table info available.
#3  0x4116a8f8 in MirConnection::create_copy_of_display_config() () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.3
No symbol table info available.
#4  0x411694e4 in mir_connection_get_display_info () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.3
No symbol table info available.
#5  0x403cc384 in ua_ui_display_new_with_index () from /usr/lib/arm-linux-gnueabihf/libubuntu_application_api_mirclient.so.1
No symbol table info available.
#6  0x4111a1f6 in ?? () from /usr/lib/arm-linux-gnueabihf/qt5/plugins/platforms/libqubuntumirclient.so
No symbol table info available.
#7  0x4111a1f6 in ?? () from /usr/lib/arm-linux-gnueabihf/qt5/plugins/platforms/libqubuntumirclient.so
No symbol table info available.
Backtrace stopped: previous frame identical to this frame (corrupt stack?)