always get an error:
db**[115]: arguments to db**_message_new_method_call() were incorrect, assertion "_db**check_is_valid**** ()" failed in file ././**/dbus/dbus-mssge.c line 1366.
This is normally a bug in some application using the D-Bus library.
D-Bus not built with -rdynamic so unable to print a backtrace
bash: [112: 3 (255)] tcsetattr: Inappropriate ioctl for device
Why, I was about to collapse in the last step.