VirtualDisplay instead of MappedDisplay?

[fowie]

Intel GMA950, driver seems to be working fine (vanilla .kext from iAtkos v7). When I try to use the HDMI/DVI port with an Apple Studio display I get the blue screen with no mouse, no desktop, no joy. If I plug in a CRT, the desktop then shows up on the crt. The windowserver log shows:

 

--- With CRT and LCD Plugged in, display only showing on CRT, LCD turns itself off ----

Nov 08 14:08:24  [59] CGXMappedDisplayStart: Unit 0: no display alias property
Nov 08 14:08:24  [59] CGXMappedDisplayStart: Unit 1: no display alias property
Nov 08 14:08:26  [59] CGXPerformInitialDisplayConfiguration
Nov 08 14:08:26  [59]   Display 0x5b81c5c1: MappedDisplay Unit 1; Vendor 0x756e6b6e Model 0x717 S/N 0; online enabled (0,0)[1280 x 1024], base addr 0x21c6000
Nov 08 14:08:26  [59]   Display 0x3f003c: MappedDisplay Unit 0; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x21c6000

---- After reboot, disconnected CRT. LCD only showing blue screen ----

Nov 08 14:13:14  [64] CGXMappedDisplayStart: Unit 0: no display alias property
Nov 08 14:13:14  [64] CGXMappedDisplayStart: Unit 1: no display alias property
Nov 08 14:13:14  [64] CGXPerformInitialDisplayConfiguration
Nov 08 14:13:14  [64]   Display 0x41dc9d01: VirtualDisplay Unit 1; Vendor 0x756e6b6e Model 0x76697274 S/N 0; online enabled built-in (0,0)[1280 x 1024], base addr 0xb0024000
Nov 08 14:13:14  [64]   Display 0x41dc9d00: VirtualDisplay Unit 0; Vendor 0x756e6b6e Model 0x76697274 S/N 0; offline enabled built-in (2304,0)[1 x 1], base addr 0xb0021000

---- Same session, plugging in CRT gives: ----

Nov 08 14:15:15  [64] New display device coming on-line. Switching from virtual display mode

 

I know the LCD can work via the DVI/HDMI port because it works fine in both Windows 7 and Ubuntu. Can someone PLEASE help me get this working?