https://www.displayfusion.com/Discussions/RSS/?TopicID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa DisplayFusion RSS: Windows 7 Display Re-Numbering? Mon, 22 Jun 2026 17:07:02 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa https://www.displayfusion.com/Discussions/View/windows-7-display-re-numbering/?ID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa#2 Wed, 07 Dec 2011 20:52:05 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/windows-7-display-re-numbering/?ID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa#2 DisplayFusion Unfortunately Windows takes care of the monitor numbering, and there's not much you can do about it. It's very strange that Lightroom depends on the numbers to determine whether a monitor is secondary or not, it is quite common to have your primary monitor as 2 or higher (I do). ]]> https://www.displayfusion.com/Discussions/View/windows-7-display-re-numbering/?ID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa Fri, 02 Dec 2011 07:12:15 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/windows-7-display-re-numbering/?ID=cb48ba07-e90b-4144-aeeb-2c6ad7625caa DisplayFusion I'm hoping the multi-monitor experts here have an idea.

This week I upgraded my system from two to three monitors (going to four when my replacement desk arrives and I can mount the arms).

My left-to-right arrangement is, using display number, 3-2-1 (where 1 is plugged into primary card, port 2 and 2 is plugged into primary card port 1, and 3 is plugged into secondary card). I've tried swapping the ports on the primary card with no impact on the display numbers.

Lightroom (stupidly) does a next-in-list-with-wrapping selection for the secondary monitor.

With two monitors, if the main window is on 1, secondary is on 2. If main is on 2, secondary is on 1.
With three monitors, the pairs are (main/secondary): 1/2, 2/3, 3/1.

But, what I want is 2/1.

Until Lightroom fixes their stupidity to let the user customize the monitor to use for the secondary, I'm stuck, unless I can re-number my monitors so they're 3-1-2 (swapping 1 and 2).

Perhaps it might help if I understood why 1 is 1 and 2 is 2, regardless of which port on the primary card each is plugged into. If there was a hardware solution to swapping the numbers, that would work. Or maybe there's a registry entry.

Any ideas? Googling hasn't found me anything usable.

Thanks. ]]>