Hi,
Please, somebody knows if there is a working solution for ATI Mobility radeon X1200M (devID 0x791F)? It should be similar to the Mobility 1300 (Linux driver for 1300 works well).
I have tested various kexts found in the web, without results. Each attempt to put my devID in the ATIRadeonX1000.kext leads to a kernel panic. Only an old ATIinject.kext doesn't crash and, with it installed, System Profiler reports:

ATY,RadeonX1200:

Chipset Model: ATY,RadeonX1200
Type: Display
Bus: PCI
VRAM (Total): 128 MB
Vendor: ATI (0x1002)
Device ID: 0x791f
Revision ID: 0x0000
EFI Driver Version: 01.00.068
Displays:
Display:
Resolution: 1152 x 864
Depth: 32-bit Color
Core Image: Software
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Not Supported
Display Connector:

Obviously I cannot change monitor resolution. The value 1152x864 was obtained editing the boot.plist file, with the string "Graphics Mode"="1440x900x32" (my monitor native resolution).
My laptop is a Toshiba Satellite P205D-S7429, running Kalyway INTEL/AMD 10.5.2.

Thanks