Keyboard and Trackpad Unresponsive after Yosemite Beta intall
I've installed the Yosemite Beta over my Mavericks install. After which, when the computer boots up, my cursor appears in the top left corner, but I can not move it, neither with the Trackpad or even a USB mouse. The keyboard also is unresponsive except that I can hold the power button in to get the system shutdown prompt (although I can't respond to it) or hold the power button down until the system shuts off.
Booting up into Mavericks via my external drive back up, or into Recovery mode, allows both keyboard and trackpad to work normally.
Walt D in LV