This had a surprising answer. It was the mouse! ”Turned out to be a really simple fix. A few of the strange behaviors made me think it might have something to do with my mouse. Sure enough, I switched out my mouse and everything is working fine. I guess my old mouse (a 3rd party mouse by Evoluent) went haywire.” You rarely suspect that kind of problem for this issue. I was wondering if it might be some kind of damage like a disk or something.
There is a bit of a self promoting article but has some fun pictures and a good point. Click here to read.
Good step by step. Click here to read how.
Nice program that automates the installation. Click here.
Ok. Follow the instructions by petermacc “1. You do NOT need to open the case and remove the graphics boards.
2. What you MUST do is remove the Mini DisplayPort AND THE USB for extra screen. If you leave the USB connected it still thinks the screen is there !!
3. Run the update with the first screen’s Mini DisplayPort and USB connected. Continue through the whole update cycle until you get the ‘update completed’ pop-up. Then unplug that screen and connect the Mini Displayport and USB for the next screen and repeat the exercise.
4. Plug in both screens and reboot. Check in the ‘About this Mac’ in ‘more info’ under the USB section of hardware that when you click on the ‘Display isight’ that it shows Version 2.31 for both screens/cameras.”
Long and detailed post. Click here to read.
Nice details. Click here to learn more.
Click here to read more. Nice to see a step by step.