P: Ability to assign a second monitor with more than 3 monitors

LightRoom 3.4.1, under Win7 Pro SP1.
I have 3 monitors: Main (1) is central, number 2 on its right, and number 3 on its left. I cannot manage to have LightRoom display the secondary screen in full screen mode on the right most monitor. Montior cables were switch, different monitor numbering tried to no avail.

In my experience it doesn't matter if the no. 1 screen is laptop's internal or other screen.
I have similiar problem with my configuration: two identical 1600x1200 Samsung 20" displays and 1920x1080 Panasonic 32" TV (connected to two NVidia graphic cards). In this case Lightroom's 2nd display always jumps to TV screen (when in fullscreen mode) when main app is on Windows' main display. This is independant of screen numbering in Windows settings (which depends on physical connection of the screens). This is very annoying :/
The only solution for me so far is dragging the main app to the no. 2 monitor - then Lightroom's 2nd screen appears on no. 1 screen (main). Problem in this case is accessing the Windows' taskbar (as I use auto-hide function) - the taskbar doesn't slide out when I move the mouse to the bottom of the screen with full-screen-mode Lightroom's 2nd window. Very irritating 😕😕

For some reason, the second display doesn't show up to right of the main. It shows on the internal display, and this is not what I want.

Here are how the display numbers appear.

[2 (primary)] [3 (should be secondary)] [1 (internal)]

I want to use 2 & 3 (and theoretically I should be able to), but 2 & 1 is used instead.

This may due to that my configuration includes an internal display (which may have some kind of priority).

In any case, it would be nice if a third (or more) display is recognized as "third display" in LR.

Here's more from the eng:

"They referred to resizing and moving it, which is why I think they don't understand that you can push the fullscreen version of the secondary window onto any monitor you want it on by dragging the main app window.

We don't try to remember which monitor they last had it on, we always just pick the monitor to the right of the app monitor. So they'll have to push it onto their third monitor every time they turn on the view."

Sound like you figured out what he suggests in the first paragraph.

So, if you push the maximized main window right twice, you can't get it to the 3rd screen?

Hi Jeffrey, now I correctly understand what you mean by "pushing around." If I maximize the main window in a monitor, the secondary display is pushed out to another. But in my case, it always moves to the monitor that I don't want to use. The direction of this cycle in one way, so this situation is logically possible.

The number of monitors in my configuration is always three.
It's a VAIO Z, and it can handle up to four monitors, in fact.

The engineer suggested also "The behavior I described only happens
when you run the secondary display in full screen mode. This person
should try that instead of using the windowed mode and positioning it by
hand."

Have you tried having the 2nd monitor window set to Full Screen mode? If might make this work the way you expect.

I think I'm following you now. Your main beef is that because you use a laptop, the screen numbers change when you unhook and rehook your external monitors. It's not so much that you can't get the second monitor window on the right monitor, you can't get it to be permanently remembered when the monitors are removed and added. Is that correct?

Thanks, Jeffrey! It's nice to know that you guys are reading. I know that if I use a window on the second monitor, I can resize & move it around. So it's almost OK. But it sometimes shrinks back when I exceed the the maximum window size, leave LR, and come back. I wrote a short AutoIt script to fix this. I wish I could use it on a clean full screen. Maybe it's also nice to add support for 3 or more screens.

I talked with the engineer that implemented this feature. He says it should be possible to place the secondary display on any monitor by pushing it around with the app window. If you drag the app window onto the monitor containing the secondary display, it will jump to the next monitor over. So you should be able to chase it onto whichever monitor you want by dragging the app around.

(I changed the nickname.) Thanks again. Disabling the laptop's monitor works as a workaround, but LR should be able to choose a monitor more flexibly. I hope Adobe people could look into this.