AndrewMT

I would also be very grateful for a solution to this problem.  I get the hanging blue screen whenever switching video mode (setting to mirror or unplugging a monitor) and cannot seem to wake the display after it goes to sleep.  I can switch the order of my monitors without a crash (change primary and secondary).

I have a Asus G74SX Laptop with a GTX 560m running 10.8.  My log when switching to Mirror mode:

7/30/12 11:34:50.000 PM kernel[0]: NVDA(DMA): Channel exception! exception type = 0x1f = Fifo: MMU Error
7/30/12 11:34:55.000 PM kernel[0]: 00000069