BetterDummy VS DisableMonitor

BetterDummy lets you create the virtual screens on the computer https://github.com/waydabber/BetterDummy

If your on a Mac you can use this software instead of hardware dongles with much higher resolutions https://github.com/waydabber/BetterDummy

BetterTouchTool has a SuperBrightness action in the newest beta which works on the same principle as Vivid, while BetterDummy added an XDR slider that works on the same principle as Lunar.

I've had great results with BetterDummy[0] for my M1 make with a non-4K external monitor.

It's free and open source with an optional Pro version. I've been using it longer than the Pro version has been around, so I'm not familiar with what advantages it may have over the free version.

[0] https://github.com/waydabber/BetterDummy

You might want to try BetterDummy to add a virtual display to the Mac if there is not a physical one already connected. Might solve the black screen issue.

I'm currently on MontereyI use this https://github.com/waydabber/BetterDummy and create a dummy to emulate higher res display

better dummy, just download it

DisableMonitor (free) - lets you apply a custom resolution to your internal or external monitors (e.g. 1920x1080) Available on GitHub

I'm wondering if the same is possible on an M1 machine—through a tool like DisableMonitor, can you force 8k resolutions on an M1? Or, if not, does selecting 4k run it truly at 4k (e.g. 1:1 rendering for blurrier visuals on the pro display), or does it render at 8k and downscale?

I use Screen Sharing to have my Macbook screen show on my iMac. Works flawless over Gigabit, except that cmd-tab sometimes lags. There are tools available[0] that allow you to set a higher resolution for a screen than what would be sensibly supported by the LCD panel. Although it doesn't do retina this way.

[0] https://github.com/Eun/DisableMonitor