Comment 6 for bug 1471254

Error message in my case is:

The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 237 error_code 8 request_code 140 minor_code 30)

after single stepping in msd-xrandr-manager.c, lines 329, 335, 329, 335, 329, 330, 335, 337, 340, 339, 342, 340 -> Bug

Call was: apply_configuration_from_filename (manager=manager@entry=0x6520f0,
    filename=filename@entry=0x668530 "/etc/mate-settings-daemon/xrandr/monitors.xml", no_matching_config_is_an_error=no_matching_config_is_an_error@entry=1,
    timestamp=timestamp@entry=0, error=error@entry=0x0)
    at msd-xrandr-manager.c:329