HiDPI resolutions are followed by non-HiDPI resolutions so don't forget to scroll down, it's a long list!.You'll see a long list of available resolutions - select the desired resolution.In the app menu choose Connect Dummy and select your desired aspect ratio.Does not utilize graphics hardware in vain so it is somewhat faster.Works with all aspect ratios, does not depend on what resoluations are recorded in the dummy's EDID/firmware.Offers a much wideer variety of HiDPI and standard resolutions.Does not suffer from issues that prevalent with the physical dummy route (like jittery mouse cursor).Your HDMI port will remain usable for an other display.To alleviate this problem, DummyDisplay creates a virtual dummy display for you which you can then utilize as a mirror main.Īdvantages of BetterDummy over a physical 4K HDMI dummy plug: This approach has obvious drawbacks (you need to buy a dummy, you render your HDMI port useless etc.) To fix this issue, many resort to buying a 4K HDMI dummy dongle to fool macOS into thinking that a 4K display is connected and then mirror the contents of this dummy display to the physical lower-res display in order to have HDMI resolution. Notoriously they don't allow sub 4K resolution displays to have HiDPI ("Retina") resolutions even though a 22" - 24" QHD display would greatly benefit from having an 1920x1080 HiDPI mode. M1 macs tend to have issues with custom resolutions. Dummy Display for Apple Silicon Macs to achieve custom resolutions.
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