u/Flat_Exercise_7679

My MacBook Pro stopped sending a display signal to my monitor via USB-C.

  1. It was working fine before. Randomly stopped working.
  2. It is receiving power from the monitor.
  3. When I connect the Mac using HDMI to USB, it works. What is weird is that if I plug the HDMI in first, --> Connect the USB-C --> the USB-C starts working.
  4. It is a 2025 Mac pro and a LG monitor.

Any idea what is causing this?

reddit.com
u/Flat_Exercise_7679 — 8 days ago

My MacBook Pro stopped sending a display signal to my monitor via USB-C.

  1. It was working fine before. Randomly stopped working.
  2. It is receiving power from the monitor.
  3. When I connect the Mac using HDMI to USB, it works. What is weird is that if I plug the HDMI in first, --> Connect the USB-C --> the USB-C starts working.
  4. It is a 2025 Mac pro and a LG monitor.

Any idea what is causing this?

reddit.com
u/Flat_Exercise_7679 — 10 days ago