MacBook Pro M1 dock display port not working after update

My macbook pro M1 updated last night to Tahoe 26.1, since then, my dock's display port won't work.


Looking at the console, I've found some logs that may shed some light:

error 09:56:26.202368-0600 Dock Invalid display 0x00000002

error 09:56:26.202418-0600 Dock Failed to retrieve UUID for display 0x00000002 (1001) (invariant failure)

error 09:56:26.204766-0600 WindowManager invalid display identifier <private>

error 09:56:26.268188-0600 WallpaperAgent No display descriptor for display: '8F305CF1-7FC9-46E2-B529-3176AF9E62D1': CoreGraphicsErrorDomain (1011) <private>

error 09:56:26.420747-0600 ControlCenter -[MPDisplay bucketizeDisplayModes] -- Failed to find enough (3 of 4) valid modes.


Things I've already tried:

  • Unplugging and re-plugging the dock, display port, thunderbolt cable: Same behavior.
  • Changing thunderbolt cable: same result.
  • Connecting the thunderbolt cable to another computer (macbook air m2 sequoia 15.5), worked perfectly.
  • Connecting the same monitor directly through the macbook's hdmi port - Works fine.


Additional info:

Macbook pro M1 2021.

Chip Apple M1 Pro

16GB RAM

Dock: Caldigit TS4 thunderbolt 4

MacBook Pro 16″, macOS 26.1

Posted on Nov 24, 2025 8:14 AM

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MacBook Pro M1 dock display port not working after update

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