If it can help you, this is where ioreg stops dumping info ... | | +-o pci-bridge@3 <class IOPCIDevice> | | | +-o IOPCI2PCIBridge <class IOPCI2PCIBridge> | | | +-o MTRX,Toucan@0 <class IOPCIDevice> | | | | +-o com_matrox_driver_MatroxMmgdG400 <class com_matrox_driver_MatroxMmgdG400> I've found now that my FrameBuffer loads and start (but still won't recognize it as a display). I still have the IORegistry crashing (or ioreg stop from dumping info) Other investigations I've made: Detach the FrameBuffer from EffectDriver and use IOPCIDevice and everything works fine! ioreg not crashing and a display. But this is not the correct way to go since it will create problems when I will do effects... A crash log of ioreg help ? Impossible... It's not generating one. But here is in the console: Rexplorer.m:109 failed assertion 'status == KERN_SUCCESS' Francis _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.