Fixing the MacBook Pro Automatic Graphic Switching color-shifting glitch ★ discussions.apple.com

There seems to be a little bug that affects a small number of MacBook Pro (with dual graphic card) machines; the display would turn blueish when the discreet graphic is in use by way of the Automatic Graphic Switching.

User daywalkerdha shared a fix, but I’ve included some extra steps to ensure its effect:

  1. Close all running apps, unplug the power cable.
  2. Disable automatic graphics card switching while in battery-mode (in System Preferences).
  3. Reboot, and reset the PRAM (Hold Option-Command-P-R keys, continue until second startup time).
  4. Connect the power cable after the boot sequence finish.
  5. Enable automatic switching again.

You can also try resetting the SMC, or update Nvidia’s CUDA Driver if you want to be thorough, but daywalkerdha’s solution worked perfectly for me.

Update: The same problem reappears in Yosemite (build 14A261i), and the same fix seems to have worked accordingly.