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Please note that this guide is for the old v1.0.13 (open source) version and is about how to configure the app for mirroring.
In the new v1.1.x version you can simply click Create Dummy for This Display under your display's Settings menu and choose the Connect and Set up Mirroring in the pop-up that appears.
Start the app
In the app menu choose Create New Dummy and select your desired aspect ratio
In System Preferences -> Displays you'll see the new Dummy display (for example Dummy 16:9)
Activate mirroring. The Main display should be the Dummy display
Set the Dummy display as Optimize for
Set the Resolution as Scaled (you should hold the Option key while clicking on the Scaled option for a full list of resolutions!) or use the app's own resolution selector located in the app menu.
Select the desired mode.
The app saves the dummy display configuration and automatically restores it upon next restart.
The tutorial was compiled on macOS Monterey (for Big Sur as well - steps are slightly different, see this article on how to customize mirroring on Big Sur).
For most configurations, you'll see HiDPI 'Retina' resolutions in the list by default and see and additional non-HiDPI resolutions marked with a (low resolution) tag in the resolution list if Show all resolutions is toggled. On some configurations however, you might see HiDPI (high resolution) display modes marked with a (HiDPI) tag and standard resolutions without a tag.
You might have to fight a bit with macOS Monterey's new Displays tab in Preferences as the Optimize for setting tends to reset at random times to the physical display for unknown reasons during changing settings. If this happens, you can set it back to the Dummy.
You may want to enable the System Preferences»Notifications & Focus»Allow Notifications»When mirroring or sharing the display option to allow notifications when mirroring is turned on.
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Please note that this guide is for the old v1.0.13 (open source) version and is about how to configure the app for mirroring.
In the new v1.1.x version you can simply click
Create Dummy for This Display
under your display'sSettings
menu and choose theConnect and Set up Mirroring
in the pop-up that appears.Create New Dummy
and select your desired aspect ratioSystem Preferences
->Displays
you'll see the new Dummy display (for exampleDummy 16:9
)Main
display should be the Dummy displayOptimize for
Resolution
asScaled
(you should hold theOption
key while clicking on theScaled
option for a full list of resolutions!) or use the app's own resolution selector located in the app menu.The app saves the dummy display configuration and automatically restores it upon next restart.
For more information on usage, see the the additional help section.
Notes:
(low resolution)
tag in the resolution list ifShow all resolutions
is toggled. On some configurations however, you might see HiDPI (high resolution) display modes marked with a(HiDPI)
tag and standard resolutions without a tag.Displays
tab in Preferences as theOptimize for
setting tends to reset at random times to the physical display for unknown reasons during changing settings. If this happens, you can set it back to the Dummy.System Preferences
»Notifications & Focus
»Allow Notifications
»When mirroring or sharing the display
option to allow notifications when mirroring is turned on.Beta Was this translation helpful? Give feedback.
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