.
Thread 1 (Thread 0x7f0544ec4740 (LWP 356)):
#0  0x00007f05452a07f9 in ply_renderer_set_handler_for_input_source (renderer=<optimized out>, input_source=0x5599642cc930, handler=0x0, user_data=0x0) at ply-renderer.c:406
        __PRETTY_FUNCTION__ = "ply_renderer_set_handler_for_input_source"
#1  0x00007f054529a5ac in ply_keyboard_stop_watching_for_renderer_input (keyboard=0x5599642d5590) at ply-keyboard.c:406
No locals.
#2  ply_keyboard_stop_watching_for_input (keyboard=keyboard@entry=0x5599642d5590) at ply-keyboard.c:406
        __PRETTY_FUNCTION__ = "ply_keyboard_stop_watching_for_input"
#3  0x00007f0545299b3b in ply_device_manager_deactivate_keyboards (manager=0x5599642c5a10) at ply-device-manager.c:976
        keyboard = 0x5599642d5590
        next_node = 0x559964341970
        node = <optimized out>
        __func__ = "ply_device_manager_deactivate_keyboards"
#4  0x0000559963bf4d77 in on_quit (state=0x7ffd7332c130, retain_splash=<optimized out>, quit_trigger=0x5599642cb750) at main.c:1435
        __func__ = "on_quit"
#5  0x0000559963befdcc in ply_boot_connection_on_request (connection=0x559964333e00) at ply-boot-server.c:529
        retain_splash = false
        quit_trigger = 0x5599642cb750
        server = 0x5599642c0e70
        command = <optimized out>
        argument = <optimized out>
        __PRETTY_FUNCTION__ = "ply_boot_connection_on_request"
        __func__ = "ply_boot_connection_on_request"
#6  0x00007f05452b1f26 in ply_event_loop_handle_met_status_for_source (status=<optimized out>, source=0x55996430c950, loop=0x5599642be3a0) at ply-event-loop.c:1034
        next_node = 0x0
        destination = 0x559964333260
        node = <optimized out>
        node = <optimized out>
        __PRETTY_FUNCTION__ = <optimized out>
        next_node = <optimized out>
        destination = <optimized out>
#7  ply_event_loop_process_pending_events (loop=0x5599642be3a0) at ply-event-loop.c:1279
        source = 0x55996430c950
        status = PLY_EVENT_LOOP_FD_STATUS_HAS_DATA
        is_disconnected = false
        number_of_received_events = <optimized out>
        i = <optimized out>
        loop = 0x5599642be3a0
        __PRETTY_FUNCTION__ = "ply_event_loop_process_pending_events"
        source = <optimized out>
        source = <optimized out>
        bytes_ready = <optimized out>
        source = <optimized out>
        status = <optimized out>
        number_of_received_events = <optimized out>
        i = <optimized out>
        events = {{events = 1, data = {ptr = 0x55996430c950, fd = 1680918864, u32 = 1680918864, u64 = 94117299276112}}, {events = 4294967295, data = {ptr = 0xffffffffffffffff, fd = -1, u32 = 4294967295, u64 = 18446744073709551615}} <repeats 63 times>}
        timeout = <optimized out>
        is_disconnected = <optimized out>
        number_of_received_events = <optimized out>
        i = <optimized out>
        events = {{events = 1, data = {ptr = 0x55996430c950, fd = 1680918864, u32 = 1680918864, u64 = 94117299276112}}, {events = 4294967295, data = {ptr = 0xffffffffffffffff, fd = -1, u32 = 4294967295, u64 = 18446744073709551615}} <repeats 63 times>}
        __PRETTY_FUNCTION__ = "ply_event_loop_process_pending_events"
        timeout = <optimized out>
        source = <optimized out>
        source = <optimized out>
        status = <optimized out>
        is_disconnected = <optimized out>
        bytes_ready = <optimized out>
        source = <optimized out>
#8  0x00007f05452b23c0 in ply_event_loop_run (loop=0x5599642be3a0) at ply-event-loop.c:1310
No locals.
#9  0x0000559963bed565 in main (argc=<optimized out>, argv=0x7ffd7332d328) at main.c:2398
        state = {loop = 0x5599642be3a0, boot_server = 0x5599642c0e70, boot_splash = 0x5599642d5830, session = 0x5599642c21a0, boot_buffer = 0x5599642c1170, progress = 0x5599642c5740, keystroke_triggers = 0x5599642bfdc0, entry_triggers = 0x5599642bfde0, entry_buffer = 0x5599642bfe00, messages = 0x5599642c0e50, command_parser = 0x5599642be260, mode = PLY_MODE_BOOT, local_console_terminal = 0x5599642c5bb0, device_manager = 0x5599642c5a10, deactivate_trigger = 0x0, quit_trigger = 0x5599642cb750, start_time = 27.187226291999998, splash_delay = nan(0x8000000000000), device_timeout = 5, kernel_command_line = "BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic root=UUID=ff708f10-3fbc-4fa2-b7a5-93f0dd61eb21 ro splash quiet vt.handoff=1\n", '\000' <repeats 3978 times>, kernel_command_line_is_set = 1, no_boot_log = 0, showing_details = 0, system_initialized = 0, is_redirected = 1, is_attached = 1, should_be_attached = 1, should_retain_splash = 0, is_inactive = 0, is_shown = 1, should_force_details = 0, override_splash_path = 0x0, system_default_splash_path = 0x0, distribution_default_splash_path = 0x0, default_tty = 0x559963bf80df "/dev/tty1", number_of_errors = 0, pending_messages = 0x5599642c0e30}
        exit_code = <optimized out>
        should_help = false
        no_boot_log = false
        no_daemon = false
        debug = false
        attach_to_session = true
        daemon_handle = <optimized out>
        mode_string = 0x5599642bec30 "p\354+d\231U"
        kernel_command_line = 0x0
        tty = 0x0
        device_manager_flags = PLY_DEVICE_MANAGER_FLAGS_NONE
        __func__ = "main"