macOS Tahoe update breaks using external display in clamshell mode

2 comments

• paulbjensen 1 hour ago
  I've just run into this issue. At first I thought that there was something wrong with the cable or the power, but now stumbled on this thread.

  Laptop: 13" MacBook Pro, M1 processor, 2020 edition Display: Apple Studio Display
• paulbjensen 1 hour ago
  Update: Running this in the terminal works:

  sudo pmset -a disablesleep 1

  And if you want to revert that, run this:

  sudo pmset -a disablesleep 0