If you’re a power Mac user, there’s a good chance you’ve heard of Keyboard Maestro. It’s like wizardry for your Mac. It lets you trigger complex actions with just a hotkey, a USB device, or even a typed word. But what happens when your magic wand (read: your macro) suddenly stops working after your Mac wakes up from sleep?
That’s exactly what happened to me. Mac wakes from sleep. Keyboard Maestro macros? Completely non-responsive. After lots of trial and error (and some yelling), I discovered a strange hero of the story — the USB Device Trigger Reset.
TL;DR
After sleep mode, some Keyboard Maestro macros stopped responding. It turned out that Keyboard Maestro couldn’t detect USB devices properly after sleep. The fix? A clever macro that resets the USB Device Trigger system when the Mac wakes up. It’s simple and it works like magic.
What Was Going Wrong?
Everything worked fine — at first. My custom macros were triggered perfectly when I pressed buttons on my USB foot pedal and other input devices. But every time my Mac woke from sleep, the magic was gone. Nothing worked.
No matter how many times I pleaded with my macro to run (okay, clicked the button), nothing happened. Keyboard Maestro was awake, but it was like it had amnesia.
The Strange Trigger Behind the Trigger
I finally realized the culprit: the USB Device Trigger.
This trigger in Keyboard Maestro lets you run macros when a USB device connects, disconnects, or changes. Super handy. But after sleep, it seemed your Mac and Keyboard Maestro just stopped talking about USB changes. It’s like someone pressed mute.
Here’s what was happening behind the scenes:
- Your Mac sleeps. USB devices either disconnect internally or reset.
- Keyboard Maestro does not catch the reconnection event after waking up.
- Macros that rely on those triggers don’t run. They just sit quietly in the corner, sad and neglected.
Temporary Fixes That Didn’t Work
Naturally, I tried all the usual voodoo:
- Restarted Keyboard Maestro
- Unplugged and replugged my USB devices
- Created new macros with different triggers
- Sacrificed a USB cable to the tech gods*
*Okay, I just threw it against the wall.
None of it helped. And rebooting my Mac wasn’t a solution I loved.
The Magic Solution: Resetting the USB Trigger
Then came my glorious aha moment. I realized I didn’t need to fix the hardware. I just needed to remind Keyboard Maestro to check the USB devices again after the Mac wakes up!
How? By creating a macro that resets the USB Device Trigger system.
Here’s How the Fix Works:
- Create a new macro in Keyboard Maestro.
- Set the trigger to “This Mac wakes from sleep.”
- Add one action: Execute AppleScript
- Paste this code:
tell application "Keyboard Maestro Engine" to do script "Your USB Trigger Macro Name"
- Replace “Your USB Trigger Macro Name” with the name of the macro that sets up the USB device trigger.
This tells Keyboard Maestro: Hey buddy, the Mac is awake — time to re-check those USB devices!
Bonus Tip:
If your USB device doesn’t always send a connect signal after sleep, you can simulate the event by turning the trigger macro off and on again using an AppleScript or KM action.
Making It Foolproof (and Sleep-proof)
After adding that macro, everything started working again. Like clockwork.
Here’s a quick checklist to make sure your fix is solid:
- Double-check the macro name in your script. Spaces and typos count!
- Make sure you selected the right trigger: “This Mac wakes from sleep”.
- Test it by putting your Mac to sleep and waking it up. Try your USB-triggered macro. Is it alive? If yes, do a happy dance.
But Why Does This Even Happen?
Good question. The simple explanation? Sleep mode breaks connections.
When your Mac goes to sleep, it might power down USB ports or reset them. But when it wakes up, Keyboard Maestro doesn’t always reinitialize those connections correctly. It expects the USB state to remain the same… but they’re not.
Think of it like showing up at school without realizing there’s a substitute teacher. Nothing proceeds normally.
Other Workarounds to Keep in Mind
While the reset macro works for most people, here are a few other options you could try:
- Use different triggers: Instead of a USB device trigger, use a hotkey or typed string — they’re immune to sleep glitches.
- Use BetterTouchTool or Hammerspoon to monitor device connections more reliably and hand off to Keyboard Maestro.
- Automate Sleep Protection: Use a tool like Amphetamine to prevent your Mac from sleeping during specific hours or tasks.
Will This Fix Break in Future macOS Versions?
It’s possible. Apple occasionally changes how macOS handles USB sleep behaviors. But for now, this fix works reliably on Big Sur, Monterey, Ventura, and even Sonoma.
If Apple shakes things up again, you may need to adjust your macro slightly. But you’ll know exactly where to look.
A Happy Ending for a Sleepy Mac
After implementing the USB trigger reset, I stopped worrying. My macros run happily every time I boot up or wake up my Mac. It feels like waking up to coffee already brewed. Ahh.
If you’ve been pulling your hair out trying to solve this — give this trick a try. You might just save yourself hours of frustration.
And if you’re like me, you’ll give your macro a little name, like “Frank the Fixer,” and smile every time he does his job.
One Last Thing: Don’t Forget to Backup Your Macros
Keyboard Maestro has a great export function. Use it. Nothing’s worse than fixing your macros… and then losing them after a reinstall or OS update.
Happy automating!