Radar Display Knowledge Base
Display connections, screen settings, and sleep controls.
How do I open Radar Display and finish setup?
Find the menu bar controls, approve the MacBook sleep helper, and choose whether Radar Display opens at login.
How do I disconnect a screen or hand a monitor to another computer?
Remove a physical display from the Mac's desktop, reconnect it, and understand last-screen protection and recovery.
How do I choose the main screen, mirror displays and arrange my desktop?
Choose the main display, mirror or extend screens, place screens relative to one another, and add custom names.
How do I change text size, resolution, refresh rate or rotation?
Choose text size, resolution, refresh rate, and supported monitor rotation; understand immediate changes and recovery.
How do I adjust brightness, True Tone, HDR and display color?
Use the brightness and color controls supported by the current display, including Preset or Color profile.
How do I use an iPad display and change its Sidecar controls?
Connect an available iPad, arrange it, and use its sidebar, Touch Bar, and Apple Pencil settings.
How do I keep my Mac awake for a task and use a battery cutoff?
Choose a Keep Awake mode, run or edit a timed session, allow screen sleep, and resume after a battery cutoff.
What should happen when I close my MacBook's lid?
Choose normal clamshell behavior, continue on battery, darken physical monitors, or request sleep when the lid closes.
Why is a display missing, a switch disabled or a setting unavailable?
Check physical display discovery, last-screen protection, unsupported controls, and display-change errors.
Which display settings does Radar Display remember?
Understand per-display memory, reconnect restoration, external settings changes, and limits with identical monitors.
Why can’t I finish setup or enable the helper or Launch at Login?
Resolve helper registration, approval, connection, removal, and optional login-start problems without confusing the two services.
Why is my Mac sleeping, staying awake or paused unexpectedly?
Diagnose actual sleep-prevention status, interacting modes, battery pauses, failed releases, and relaunch deadlines.