Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This happens whenever I plug my MacBook into a thunderbolt display. Mission Control seems to be stuck like this until I restart. Does anyone know a fix? Has anyone at least seen this before?

enter image description here

share|improve this question

Mission Control has several major bugs, including this one (still). You should be able to remedy the issue without rebooting by issuing a simple Terminal command:

launch Terminal from /Applications/Utilities/ and type the following command:

killall Dock

The Dock and all subprocesses will restart themselves automatically, including Mission Control.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.