Solving the MacBook Air M1 Lid Closure Issue: A Unique Challenge with DisplayLink Docking Stations

Encountered a lid closure issue with my MacBook Air M1 and a DisplayLink dock without power passthrough. Found a fix using: sudo pmset -a disablesleep 1, which keeps the MacBook awake with the lid closed.

Solving the MacBook Air M1 Lid Closure Issue: A Unique Challenge with DisplayLink Docking Stations
Photo by Daniel Korpai / Unsplash

As an avid tech enthusiast and MacBook Air M1 user, I've often found myself navigating through the quirks of new devices. Recently, I encountered a peculiar issue that might resonate with many MacBook users who connect their laptops to external monitors, especially when using DisplayLink-enabled docking stations that do not support power passthrough on the USB connection. Here’s the full journey of how I resolved this issue.

The Challenge: Keeping the MacBook Air M1 Awake with the Lid Closed

My goal was to streamline my workspace by connecting my MacBook Air M1 to an external monitor using a DisplayLink-enabled docking station. The challenge arose because my particular docking station lacked the capability to pass power through its USB connection. This meant that while my MacBook could connect to the external monitor, it couldn't charge simultaneously. Naturally, I wanted to use the monitor as the sole display with the MacBook closed to save space and create a cleaner setup. However, every time I closed the lid, the laptop would automatically go to sleep, disconnecting from the monitor and halting all activities. This issue is commonly referred to as "clamshell mode" trouble.

The Search for a Solution

Determined to find a workaround, I searched through a plethora of tech blogs, Apple support articles, and user forums. Most solutions suggested were standard: checking System Preferences for display settings, ensuring the power adapter was connected, or resetting the System Management Controller (SMC). These methods often assume that the MacBook is either charging or has an alternative means of power supply during use, which wasn't applicable in my case due to the limitations of my docking station.

The Breakthrough

Persistence paid off when I finally discovered a technical command that addressed my specific setup:

sudo pmset -a disablesleep 1

This command, used in the macOS terminal, tells the system to disable sleep mode entirely when activated—a potent setting that overrides the default energy-saving functions of macOS.

Implementing the Command

To use this command, I opened the Terminal application on my MacBook and entered it, followed by my administrator password to authorize the system-level change. After executing this command, I tested the setup by closing the MacBook lid with the external monitor connected through the DisplayLink dock. It worked flawlessly: the MacBook stayed awake, and I was able to use the external monitor exclusively.

Considerations and Final Thoughts

While this command (sudo pmset -a disablesleep 1) was effective, it's important to note that it prevents your MacBook from sleeping under all conditions, potentially increasing energy consumption and affecting the long-term health of the device. To revert this setting and allow your MacBook to sleep normally again, simply run:

sudo pmset -a disablesleep 0

This experience highlights the unique challenges posed by specific hardware setups and the importance of understanding the implications of system-level commands. For users facing similar issues, especially those involving non-power-passing DisplayLink docks, this solution can be a game-changer.

Whether you're a tech novice or a seasoned professional, there's always something new to learn in the ever-evolving world of technology. Remember to adapt solutions to your specific circumstances and use system commands with awareness and caution. Happy computing, and may your tech setups be ever efficient and hassle-free!

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