DISPLAYSPAN GUIDES
Fix the frustrating parts of a Mac multi-monitor setup.
Start with the built-in macOS controls, understand what is going wrong, and use DisplaySpan only when the recurring problem needs a small automatic fix.
Cursor
Mouse stuck between monitors on Mac
Why differently sized or aligned displays create blocked cursor edges—and how to cross them smoothly.
LayoutRestore a Mac display arrangement
What to do when monitor positions change after sleep, reconnecting a dock or restarting your Mac.
BrightnessControl external monitor brightness
Use F1 and F2 with supported displays, and understand the DDC/CI compatibility limits.