Note: I copied this thread over from pcbsd forum and updated it a little for new findings (and upgraded my user name :-)).
I’m using my netbook in desktop mode. Meaning the lid is closed at all times.
The display, keyboard and mouse are all external. That was no problem with pcbsd v10.3 PCDM. The external display (1280x1024, 4:3; internal: 1366x768, 16:9) got the full screen displayed (if conneted at boot time).
That already wasn’t true with the current version of Lumina under pcbsd v10.3. There I can only add an additional display beside the internal display. But I want them to display both the same content!
And with TrueOS (= 12.0-CURRENT, 14th Oct.) the problem seems to have been extended to PCDM. The internal display displays the complete screen - if no external display is connected and PCDM is reloaded, the external display (if connected at boot time) only shows a gray background and the TrueOS logo. Then the internal display only displays the gray background, part of the logo and the “power” button in the right hand corner. The login GUI is missing.
PCDM on v10.3 has no such problems. The external display (4:3) gets the full login screen, the internal display (16:9) is missing the lower part that’s missing to 4:3, but that’s expected - at least by me.
Btw: No problem with xfce on TrueOS. Just as under v10.3.
So, please add an option for additional displays that does not extend the display to two, but displays the same content on both displays! Xfce can do it, so why not Lumina, as well - and PCDM could handle it up until and including pcbsd v10.3.