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a little help in patching DSDT for ATI dev_9555 framebuffer


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i tried lot's of guides and different methods to get full advantage of my probook 4520 graphic but this mobility radeon hd 4300/4500 still not working.

i tried adding dev id to kext. tried EDID, tried adding it's framebuffer from vbios to shrike in kext.

this is my last try.

i want to add this framebuffer which is already replaced in ATI4600Controller as shrike


which is obtained from this graphic bios


and i wanna patch it to this DSDT:

DSDT obtained inside mac (with graphicsenabler=no as a flag)


DSDT obtained from ubuntu



for further reference:

EDID from ubuntu:


io registry from mac (with graphicsenabler=no as a flag)



i followed this guide


the main problem is when i compile original DSDTs it shows lots of errors! and i can't patch! meanwhile i am really not sure where to add codes for GFX!

any help would be really appreciated.



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