Hi, I tried autopatch. Same problem. I have tried every fix that is posted. In playing with this, I hooked up a monitor to the VGA port. I booted the machine and lo and behold, the screen is split between the built-in and the external VGA except that the half of the picture is pretty decent on the external vga. I'm not sure what that means but the bottom line is the first half of the image is on the built-tin and the second half on the external VGA.
In previous posts I have talked about my current solution which is to boot the laptop and then switch the the HDMI port without a monitor. The built-in will go out of horizontal sync. When I plug in my EDID emulator into the port, the built in is perfect at full resolution with DVD, HD video and even PREMIER PRO FULLY WORKING. If I actually use a real HDMI or DVI monitor, both displays work in either mirror or dual monitor mode. Chimera 1.5 not only does not work, it will boot and I'll get a KP. Make any sense to you?