Sadly, I don't think there is a solution here. You are facing a problem on who is active first. The internal will always be the primary display.
While it’s not ideal have your thought on getting the display issue fixed and/or look at selling it to get another Mac Mini?
Can you fill us in on what’s wrong with the display, maybe it won’t be too costly to repair.
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=== Update (06/27/24) ===
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@yukwa4mgygwqaoh - First off the 5k display won’t wear your GPU, it’s what the application requires that could cause the GPU to fail, but that’s not a size issue it’s the scan rate being used. Lowering the rate will reduce the load on the GPU.
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Think how a car’s engine idling is not going to cause car to over heat but driving up a sizable mountain or fast race track will press the engine hard. Your system is no different.
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While I do get the desire, force fitting a the iMac into a different expected use case it was not designed to do as you’ve already made the investment and want a different type of display.
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Frankly I would sell the system and pick up a Mac Studio system right now they are heavily discounted as Apple needs to clear the shelves with the pending next version. If you’re iMac is more that powerful for your needs, then jumping to a Studio will who’re than exceed your needs! Then you can plug in your curved display and run a few different OS’s on it.
Sadly, I don't think there is a solution here. You are facing a problem on who is active first. The internal will always be the primary display.
While it’s not ideal have your thought on getting the display issue fixed and/or look at selling it to get another Mac Mini?
Can you fill us in on what’s wrong with the display, maybe it won’t be too costly to repair.
+
+
=== Update (06/27/24) ===
+
@yukwa4mgygwqaoh - First off the 5k display won’t wear your GPU, it’s what the application requires that could cause the GPU to fail, but that’s not a size issue it’s the scan rate being used. Lowering the rate will reduce the load on the GPU.
+
+
Think how a car’s engine idling is not going to cause car to over heat but driving up a sizable mountain or fast race track will press the engine hard. Your system is no different.
+
+
While I do get the desire, force fitting a the iMac into a different expected use case it was not designed to do as you’ve already made the investment and want a different type of display.
+
+
Frankly I would sell the system and pick up a Mac Studio system right now they are heavily discounted as Apple needs to clear the shelves with the pending next version. If you’re iMac is more that powerful for your needs, then jumping to a Studio will who’re than exceed your needs! Then you can plug in your curved display and run a few different OS’s on it.
Sadly, I don't think there is a solution here. You are facing a problem on who is active first. The internal will always be the primary display.
While it’s not ideal have your thought on getting the display issue fixed and/or look at selling it to get another Mac Mini?
Can you fill us in on what’s wrong with the display, maybe it won’t be costly to repair.