To answer your question, yes I can setup my monitors with `xrandr` but I
can also setup my monitors just fine the default way. The issue has
nothing to do with configuring my monitors. When using Super + p after I
used `xrandr` to configure my monitors, all configurations were lost
just as they were with the normal way of configuring the monitors
(`gnome-control-center`)

`xrandr` is not used for projector mode as that documentation is only
used to configure the monitors, not control projector mode.

Configuring my monitors is not what my issue is about. My monitors are
setup properly. The only issue with setup is that since the migration
from 16 to 18, my monitor IDs are in reverse order. Meaning, what was
originally ID 0 is now ID 4.

e.g. DP-0, DP-2, DP-4 are what I am currently using. In Ubuntu 16, my monitors 
were in this order of setup:
- DP-2, DP-0,  DP-4

Since the update to Ubuntu 18 this is the new IDs for monitors in the exact 
same setup
- DP-2, DP-4,  DP-0

You can see that DP-4 and DP-0 are switched due to the IDs being in reverse 
order for some reason. 
But I digress as this is important to make note but this is not the issue I am 
reporting.

The issue I am reporting has to do with Super + p (projector mode) not
working as expected. I think this ID order being reversed is part of the
problem but this issue seems to be bigger. Super + p which controls the
output for Projector mode simply does not work. The only part that works
is the Mirror option.

- Join
- External
- Built-in

Do the exact same thing. They wipe out my monitor config and do nothing
else. They do not disable any monitors (built-in and external should do
this) and when I select Join, I expect to go back to my config as this
is what the monitors were configured in but since my configs are reset,
nothing happens.

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https://bugs.launchpad.net/bugs/1825071

Title:
  Super + p does not work as expected, it's defective

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