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TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
Hi there, from what I understand there needed to be all sorts of workarounds in the old minis, including things like this: https://www.amazon.com/NewerTech-He...mmy/dp/B01ASJCZFK?sa-no-redirect=1&pldnSite=1
to trick the GPU into working in order to choose resolutions and get better performance when operating headless. Is this still the case with the M1 mini? I'm currently remotely accessing mine and I can't choose any resolution except for 1920*1080 (I need 1680 x 1050 in order to fit natively on my 2012 MBP non-retina)

Any help greatly appreciated
 

chabig

macrumors G4
Sep 6, 2002
11,348
9,046
Select "Default for display," then hold the option key down while you click "Scaled". That will give you all of the resolutions, including 1680 x 1050.
 

TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
Unfortunately tried that, including 3 resolution switching apps, all of them only give 1920*1080 (this was the resolution of the TV i used to set it up initially, seems like it's stuck on that maybe?
 

chabig

macrumors G4
Sep 6, 2002
11,348
9,046
You don't need an app to do this. Mine is connected to a 4K TV. Follow carefully:

Step 1 - Select "Default for display"

by default 2020-11-25 at 8.27.19 PM.jpg


Step 2 - Hold down the option key and select "Scaled"

by default 2020-11-25 at 8.28.35 PM.jpg
 

TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
Thank you but I'm not sure you understand that there's no monitor hooked up? I understand that option click allows more scaled resolutions, but as soon as the monitor is disconnected it reverts back to 1920x1080. This computer is controlled through a network using Apple Remote Desktop and has no display attached
 

chabig

macrumors G4
Sep 6, 2002
11,348
9,046
I see now. If my Mini is connected to the TV it shows all of the resolutions even with the TV turned off. But when I disconnect the TV, it reverts back to 1920x1080 just like yours. That is unexpected. Maybe Apple will change that in a future Big Sur update.

For now you might have to give up native resolution and scale the remote 1920x1080 screen to your display. I'm using Screens as my viewer and it's easy to do that.

One other thing you might do...go to craigslist and buy a small TV for $30-$50. Connect that to the Mini but keep it out of sight.
 

rgcorman

macrumors newbie
Nov 26, 2020
2
0
I think a good solution is a device like this:

They just emulate the part of a monitor that talks to the computer and negotiates resolution, etc. The computer thinks there’s a real monitor. I’ve used ones like this to good effect (not this exact device).
 

TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
I think a good solution is a device like this:

They just emulate the part of a monitor that talks to the computer and negotiates resolution, etc. The computer thinks there’s a real monitor. I’ve used ones like this to good effect (not this exact device).
Yep cheers ended up buying a 1080p version of this after reading about them!
 

TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
I see now. If my Mini is connected to the TV it shows all of the resolutions even with the TV turned off. But when I disconnect the TV, it reverts back to 1920x1080 just like yours. That is unexpected. Maybe Apple will change that in a future Big Sur update.

For now you might have to give up native resolution and scale the remote 1920x1080 screen to your display. I'm using Screens as my viewer and it's easy to do that.

One other thing you might do...go to craigslist and buy a small TV for $30-$50. Connect that to the Mini but keep it out of sight.
Yeah for sure, I think by that point I mayaswell just go the whole hog and invest in a monitor. Really bizarre that this hasn't been addressed by Apple in like ten years, maybe it's some hardware issue or something
 

Stephen.R

Suspended
Nov 2, 2018
4,356
4,746
Thailand
Yeah for sure, I think by that point I mayaswell just go the whole hog and invest in a monitor. Really bizarre that this hasn't been addressed by Apple in like ten years, maybe it's some hardware issue or something
Ignoring the resolution being fixed at 1080p - did you see any performance issues when it was headless? The GPU not activating used to make headless mini's quite unresponsive/laggy as I understand it.

I'm considering an M1 mini to run our IP camera software - but I don't really want a display with it, if I can help it. However if the lack of display means the GPU doesn't activate, I don't know how well the recording software (https://www.bensoftware.com/securityspy/) will run, as it's heavily optimised to use the GPU for decoding to do object detection, as I understand it.
 

toke lahti

macrumors 68040
Apr 23, 2007
3,288
509
Helsinki, Finland
I find it hard to believe that this problem is not solved by software.
How Apple can stop this happening and why?
What kind of security threat can virtual display be?
 

TheRdungeon

macrumors 6502a
Original poster
Jul 21, 2011
545
93
Ignoring the resolution being fixed at 1080p - did you see any performance issues when it was headless? The GPU not activating used to make headless mini's quite unresponsive/laggy as I understand it.

I'm considering an M1 mini to run our IP camera software - but I don't really want a display with it, if I can help it. However if the lack of display means the GPU doesn't activate, I don't know how well the recording software (https://www.bensoftware.com/securityspy/) will run, as it's heavily optimised to use the GPU for decoding to do object detection, as I understand it.
I ended up buying that headless adaptor so I can't quite recall anymore what the performance was like (have returned mini now). I'd heard of those performance issues on the old one as well. I'm inclined to say just buy that headless adaptor as It also lets you switch the resolution to match whatever monitor you use to access it remotely and it's under $10 and solves any chance of the GPU not activating. I will say that I'm certain it will demolish any task you throw at it, especially video
 
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