MAC MULTI-MONITOR GUIDE

Mouse stuck between monitors on Mac? Find the blocked edge.

When the pointer stops at part of a display edge, macOS may see no neighboring screen in that direction. Start with the system arrangement, then check whether different screen heights leave part of the edge unreachable.

First, check the display arrangement in macOS

1. Open System Settings → Displays → Arrange.
2. Place the display rectangles in the same directions as the screens on your desk.
3. Move the pointer across the top, middle and bottom of the shared edge, in both directions.

If all crossings now work as expected, no extra app is needed. If only part of an edge works, look for one of these setups.

Three common multi-display setups

• Large monitor beside a MacBook: one screen’s edge in macOS extends above or below the other. The pointer crosses through the overlap but stops outside it.
• Staggered displays: a raised or lowered screen leaves an unreachable section even if both displays use the same resolution.
• Different scaling: two physically similar screens can occupy different-sized rectangles in macOS. Matching their top edges does not necessarily match their bottom edges.

A physical screen gap is not a gap in the system layout

The space between the plastic bezels on your desk does not itself block the pointer. macOS uses the positions and heights of the screen rectangles. You do not need to remove the physical gap: check where their edges meet in the system arrangement.

If the pointer crosses but appears too high or low, that is an alignment or scaling problem. If it is sluggish everywhere, including the middle of one screen, investigate the mouse or connection first.

Cursor jumping between monitors can mean different things

“Cursor jumping” can describe a blocked edge, a wrong landing point, or a jump in the middle of a screen. If the pointer stops at a blocked edge, check the system arrangement and try DisplaySpan’s crossing. If it jumps mid-screen, in one app, or between separate computers, check the mouse, receiver, driver, virtual display software or input-sharing tool first.

DisplaySpan repairs where screen edges are passable on one Mac. It does not change resolution, scale pointer speed, correct cursor landing points by display size, or move a cursor between computers. See LittleBigMouse alternatives for Mac for the differences.

Let DisplaySpan handle unreachable edges

Enable cursor crossing in DisplaySpan. The cursor layout initially follows the macOS arrangement. With automatic handling of unconnected edges enabled, pushing through a blocked edge targets the nearest display in that direction. If there is no display in that direction, the pointer stays on its current screen. Normal macOS crossings stay unchanged.

Choose a custom cursor connection

1. Open the cursor settings and identify the displays using their names and thumbnails.
2. Drag the thumbnails until the edges you want to connect touch. The cursor layout saves automatically; the actual system display positions do not move.
3. Leave automatic handling enabled to repair other unconnected edges, or disable it to keep those edges blocked.
4. Test pointer movement and window dragging across the repaired sections. Restore the cursor layout to the system arrangement to follow macOS again.

Watch the illustrated crossing demo. Try the same path with crossing disabled and enabled on your own setup. Cursor repair listens to movement and dragging, requires no Input Monitoring permission, and does not upload pointer activity.

What this changes

Cursor connections control where the pointer can pass. They do not create displays, change resolution or share a mouse between separate computers. Saving and restoring the real screen positions is a separate action: follow the display arrangement guide if your layout changes after reconnecting.