External Displays Swapping - Arrangement Not Remembered!

[tstafford]

In some aspects I've moved on from Mac. But the Mac I use at home I got rid of this problem by using an app called Better Display. Works perfectly and has options it Mac decides to reset the monitor settings.

I too use BD. I have a Studio with two ASD and a Dell 6K. Display position is never an issue - works 100% of the time. Occasionally (and for reasons I can't figure out) BD is unable to hold the size and position of my windows when I wake up the system. That will persist for a few days and then all of the sudden it's fixed again. I'm fairly certain if I wasn't running BD, the window size and position issue would happen all the time.

For folks having these type of issues, I'd give BD a try.

 

[macbookmcgee]

Use DP to DP from the TS4 for monitor1. This helps the most for me with the TS4

I also use betterdisplay app https://github.com/waydabber/BetterDisplay#readme and now don't have any issues and plugin in daily

 

[aloshka]

Another thing i use it for is you can override EDID settings on the mac with this tool. So basically get refresh rates, etc that mac for whatever reason refuses to see. It doesn't save them on the monitor so that app has to be running. But I got a MBA m3 with closed lid to run dual 4k monitors, 1 @ 144hz and another at 100hz. Just an FYI

 

[anchovie]

Im running into edid issues through a kvm setup. Just to rule out some variables, Are you using the pro version of BD or the free one to help with your window placements ?

 

[sebalvarez]

At one point I thought they had fixed this, but it keeps on happening over and over. Having 3rd party software like Lunar or Better Display helps, but it's not bulletproof. If I plug in the HDMI cable that goes to my TV set, it's pandemonium. The two Samsung displays start going off and on, then finally settle on either 1920x1080 (HiDPI, so it's really twice that), or 2560x1440 or something else.

I don't know what's going to take to fix this. Obviously Apple doesn't care, and Samsung cares even less.

 

[Somian]

Same issue here... It's been going on for years and it seems pretty random. It works most of the time but sometimes it doesn't.

I have a 2019 Mac Pro with 3 Gigabyte M32UC Screens and one Lenovo P27h-10. You would think the issue is because of the same-model Gigabyte screens, but sometimes it even swaps one of the Gigabyte screens with the Lenovo. Re-arranging always takes 5 minutes or so. It happens on MacOS 14 and 15 and happened before on 13 and 12. And I shut down every day because the Mac Pro pulls 150W in idle and refuses to sleep. It also happens on my 14" M2 Max MacBook Pro. But with that I only use the 3 Gigabyte monitors.

I also know it is technically possible to identify the displays properly and that it's a macOS issue, because it works flawlessly on Bootcamp with Windows 10 on the same Mac Pro with the same configuration...

 

[hajime]

I hope M4 Macs will have this issue addressed.