Dynamic Display Management Options:
Following options will not change the config file. They are
used for querying driver, controller and adaptor information.
These options will be effective immediately. Other options on
the same command line will be ignored.
Setting current monitor to be enabled. Only 2 displays
can be enabled at the same time. Any displays
that are not on the list will be disabled.
STRING can be one of the following set, separated
auto -- use default policy to enable the displays.
This will return connected and enabled monitor information
This only works for big desktop setup. This will swap the
contents on the two monitors.