Wacom Cintiq Stopped Displaying under 10.8
I use my Wacom Cintiq 21UX on a daily basis for my graphics work and everything was fine under 10.7 on my mid 2010 Macbook Pro. I have now upgraded to Mountain Lion 10.8 and updated to 10.8.1 and the Cintiq now just displays 'No Sync', although if you move the pen around on the screen the MBP mouse arrow moves around so in effect the Cintiq is now just a tablet! I plugged the Cintiq into my wifes Macbook Air running 10.7 and it works perfectly. I have read that other people have been having issues with external displays under 10.8.1 so I presume I have the same issue as it is only the display part of the Cintiq that is not working.
Considering that the mac is used extensively throughout the graphics industry I am thoroughly disappionted that Apple have messed this up - maybe concentrating too much on iPhones and iPads? I REALLY need my Wacom Cintiq and wish I had not bothered upgrading my OS.
If anyone out there has a work around (other than going through the nonsense of downgrading) then please, please share! In the mean time, come on Apple sort this out as it is a school boy error on your part. I have been an Apple customer since 1991 and have always stood by you guys so please, please sort this embarrassing issue out!
Forgot to mention, the Cintiq is connected via USB and the Display Output (mini DVI I think it's called!)
MacBook Pro, OS X Mountain Lion (10.8.1), Same issue on my iMac 21"