Thunderbolt Display not recognized

Since upgrading to Mavericks, I have noticed a change in behaviour of my 2011 MacBook Pro 13" when connected to the Thunderbolt Display. Previously, while in clamshell mode, once the laptop went to sleep it could be revived by touching the external trackpad or wired keyboard, and the MacBook would revive and the display would activate. Now touching the trackpad appears to revive the MacBook (the pulsating light becomes solid) but the display does not activate. Unplugging the Thunderbolt cable, and reattaching it brings the screen to life, but this is a bit of a bother.



Is anyone else experiencing this, or found a solution?

via ehMac.ca http://www.ehmac.ca/showthread.php?t=113698&goto=newpost