Use the hash of the EDID as a display identification option

[Jip-Hop]

Would it be possible to use the reported native resolution as a secondary way to identify displays with same serial (for monitor with PbP enabled)?

That way some settings (like a disabled display) can be selectively applied. E.g. disable the second display when the monitor is running at full 5.120 x 2.160, but enable the second display when the reported native resolution is 2.560 x 2.160.

Or another example. With PbB enabled, both displays have a Current default resolution of 2.560 x 2.160 LoDPI @ 60Hz as seen in the System Configuration and Flexible Scaling menu. I'd like to set this to 1.280 x 1.080 HiDPI @ 60Hz by default. But I can't do this due to:

Please note that all displays with the same vendor and model number are affected by the changes!

I only want to change the default resolution of the displays when PbB is enabled in the monitor and leave the default to 2.560 x 1.080 HiDPI @ 75Hz when the reported native resolution is 5.120 x 2.160.

[waydabber]

The app could use the hash of the current EDID for identification - this usually changes as probably a different EDID is served in PbP mode to reflect the different aspect ratio and resolution options.

[Jip-Hop]

That sounds great, exactly what I was hoping/thinking!

[Jip-Hop]

Anything I can do on my end to help with this?

[waydabber]

[Jip-Hop]

Looking forward to test this! I'm on Version 3.2.2 Internal Pre-Release Build 35906 but don't see this yet. I'm curious how this would interact with #3758.

Swapping with layout protection is currently only possible when using UUID match. So to solve my P40w-20 PbP display issues I'd probably have to do this:

Name	Mode	Display ID Method	Unique EDID
Full	5120x2160 PbP disabled	Full EDID match	Yes
Left	2560x2160 PbP	UUID	No
Right	2560x2160 PbP	UUID	No

Hopefully with Full EDID match BetterDisplay can distinguish properly between when I'm using my Full display, and when I'm using PbP mode. However, since the EDIDs of both halves in PbP are the same, macOS and BetterDisplay may still swap the Left and Right display. But I think I can manage this with the Swap Position feature.

[waydabber]

This is now available in the latest internal pre-release. Well, I am not sure how will this behave, let's see. :)