How to stop your MacBook sleeping when the lid is closed

Macworld Many Mac users want to turn their MacBook into a desktop-style workstation, using an external display, keyboard, and mouse with the lid closed – a setup often called clamshell mode.

Running a MacBook this way can make sense for several reasons, from supporting multiple external monitors on certain Apple-silicon models to freeing up desk space and improving ergonomics.

Others may want their Mac to keep working with the lid closed while it downloads files, runs backups, plays music, or so you can keep your AI agents running.

The problem is that macOS is designed to put a MacBook to sleep as soon as you close the lid.

Apple does support clamshell mode (or closed-display mode), which lets you use a MacBook like a desktop by connecting an external display, keyboard, and mouse while the lid is closed.

However, this setup comes with strict requirements: clamshell mode won’t work without an external monitor, and it can introduce performance or thermal trade-offs.

If those limitations don’t suit your needs, there are alternative approaches – including third-party apps and system settings – that can keep a Mac awake with the lid closed.

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