M3 Pro MacBook drains 14% overnight in lid-closed sleep

[admin]

Closed my 14-inch MacBook Pro M3 Pro at 88% last night around 11 PM and woke up to 74%. Only an Anker USB-C hub was plugged in on the left port. What Terminal command confirms what woke the Mac?

[Daniel Hayes]

Run pmset -g assertions first in Terminal before touching NVRAM or reinstalling macOS. Many unpowered USB-C hubs keep an Ethernet/display bridge awake overnight.

If you see DarkWake TCP keepalive triggers in pmset -g log | grep -i Wake, unplugging the hub before sleep or turning off Wake for Network Access on battery typically drops overnight loss back down to 1-2%.

Mac Studio M2 Max (64GB / 2TB) | MacBook Pro 14″ M3 Pro

Seattle, WA | "Check pmset assertions before changing power defaults."

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