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Custom DSDT for Dell Studio 1555, OSX 10.9

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I succedded in installing Mac OSX 10.9 in my Dell Studio 1555. Almost everything runs just fine. I made the DSDT from ground up, based on the original of my laptop and the retail macbook pro one.


My specs are:


Processor : Intel Core 2 Duo T6400. Speedstep OK.

Video : Ati Mobility Radeon HD4570, 256 MB, with QE/CI, via custom framebuffer and Clover Injection.

Wireless : I replaced the wifi card for a Atheros AR9285, which works OOB.

Audio : IDT 92HD73C1, working via patched AppleHDA.

Ethernet : BCM5784M, working with custom kext.

CardReader : working with VoodooSDHC.

Webcam : Working OOB.


The only things missing are:




Some Videocard Features:

HDMI works, but if I unplug it the duplication icon remains in the menu bar (system thinks it is still connected).

VGA doesn't work.

The internal laptop screen, suddenly goes off every apron. 20 seconds, like trying to sleep, with mouse click or key press it wakes up. (I realized that if the HDMI were connected previously, i.e.. if the duplication icon is still on, this does not happen).


Battery appears as not installed.


Brightness slider appears but does't work, and keyboard keys does't control it either.



I suspect every missing thing are dsdt-related, but I don't realize how to go on from this point.


Can you please help?


In the attachments is my dsdt.



Thank you very much!!!




Attached Files

  • Attached File  dsdt.txt   156.99KB   58 downloads

Keith J

Keith J

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I also have a Dell studio 1555 with a ATI 4570 Radon Mobility but cant get QE/CI to work under 10.9 how did u create your custom framebuffer/Clover injection? is it possible for you to upload your modified Kext for this and also for the Audio as i have searched everywhere but cant get either of these to work!

I did find the network kext you mentioned and now have internet!! 

thank you




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Hi, I have a dell studio 1557 with same graphics card, but cannot get audio and QE/CI to work in 10.8 and 10.9, I also read about famebruffer stuff, but it seems very complicated, I tried it but did not succeed. I hope you have some tips.



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