I've had this same issue! My Wacom Cintiq 12WX tablet has been having this "Signal out of Range" issue all of the sudden with my Mac OSX Laptop. I've bought and tried new DVI cables and everything, but it still seems to persist. So, I tried out the VGA cord with my dad's old PC. Works fine. I've even uninstalled the tablet and reinstalled the software. Still nothing. Please, please please help!

http://www.conceptart.org/forums/showthread.php/201556-Cintiq-12wx-No-Sync-quot-Message

Hi , unfortunately that's an issue with toon boom Harmony , not a cintiq 's . there is no solution for it unless they provide an update for harmony or something. if you notice even the distance from the cross hair cursor and the brush stork still off set .

Did this problem get fixed? I am having the same issue :(

I had a similar issue using the 12wx with a 15" MacbookPro Retina. Screen displayed the desktop way too much to the left. I found that the refresh rate of 59.8 hertz seemed to not be compatible despite it automatically being set. After changing this to 74.9 Hertz, the desktop is now properly centered on the Wacom screen and can be calibrated now. Not sure if this applies to Windows machines but perhaps something to keep in mind.

Have you found a solution yet? I'm having the same problem. : (

The unit seldom has these kind of issues especially with mac computers. If it were windows then such would have been a normal phenomenom but with a mac then the issue is peculiar. First what you should do is try to trace all components of previous driver for the tablet on the PC and delete all components from the PC. Next get a new USB cable for connecting the tablet to the PC. This is usually done for trouble shooting purposes. after deleting all components restart the PC and then install fresh driver for the unit. Feed me back with the outcome of these activities.
Hope this solution has been helpful?

I had this same problem and just had to go into my system preferences on the imac and select display and then select/check the mirror monitors and now it is on sync-hope that helps! After I did that though my color is off on the cintiq so I am looking for suggestions on how to fix it as the calibration did not fix the problem.

Try installing the latest driver for the Cintiq 12wx at the Wacom.com website for the Vista operating system :)

Hi...there Jenn!
Go to your toolbar bottom r/h side, look for VGA Display Icon. Open it and look for dual monitor setup. It's might be what you has been looking for... If not, read your cintiq user guide... Have a nice day!

I had the same problem with the "signal out of range" box in the middle of the screen. I went to Display on Control Panel and clicked the Settings tab. Click the monitor icon for the Wacom tablet in the window (if you are using more than one monitor) and set the screen resolutioin to 1280 by 800 pixels. The "signal out of range" box disappeared.