Hello to all great hackers. I see a lot of knowledge in ACPI programming here. I would like to ask for some help because im not so good at this. I have an iMac from late 2009 with i5, 8Gb ram, ssd and now also GTX 765M, old 4850 died as they usualy do in imacs. The card works oob but without bootscreen and brightness regulation, same as many imacs with gpu changed to non apple. I know bootscreen needs apple efi, i will get to vbios hacking sometime later, for now it would be great to get brightness controls back and this is why im here. I think the problem is only in display detection as it looks like its not detected as built-in (AppleDisplay instead of AppleBuiltinDisplay in ioreg) I installed clover and tried some patches, also compared DSDT before and after new card but my knowledge ends here. Only difference i got is when i changed connector-type and properties in DSDT GFX0 device, black screen with mouse pointer and backlight working. (blind typing to get it back) Seems like all usual patches are already present because its a real mac... well now its a frankentosh The problem is also that there is no bootscreen and clover options on boot, so if something goes wrong im stuck, also no windows installed yet. I tried some kexts in CLOVER/kexts/other because that can be disabled on blind on bootscreen. I would be very happy if someone could take a look and give some suggestions to try. Thanks.