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You've added the nvidia stuff to IGPU, that makes no sense This HDMI codec has 3 devices DP1 and DP2 on dock, the hdmi device on the laptop is the last which is not working, only DP2 (which is the 1st) on dock is working

I made a fresh install with your files, but no HDMI-Audio, no internal display, the battery symbol shows me a x, i think there are a few hardware differences to your E6520 Tested with optimus disabled

@Jake Lo, in your install guide you wrote "- HDMI Video / Audio (Auto Detection works)" Have you really got HDMI-Sound output working on the NVS-4200 Latitude, or only on the HD3000 model?

So you think that clover is the culprit ?, not sure right now i've loaded yosemite with chameleon with the same result, strange that i've got sound on dock's display-port, maybe an hardware failure on the hdmi output, also no hdmi-sound with ubuntu, i will try it with windows and we will see

Hm, no one else with working HDMI-Audio on this Laptop? It's the last non working device, and the brightness lowest stage gives me a black screen

Thank you Jake Lo, i tried your kexts and dsdt but no hdmi audio With your files i have a blank screen on the laptop but hdmi video is working, after display detection the internal screen is also working, but no dmi audio can you please upload an ioreg with plugged in hdmi device

someone with working yosemite and clover without nullcpupm ?, optimus disabled only nvs4200 on chameleon there is no problem, but no nvram also not working hdmi audio, i did the the known fixes but no audio output

With 10.9.4 the same

Hi Here this Laptop is running smoothly with clover and Yosemite DP4 Which kext you use other than fakesmc and PS2 ?

CPU 42~46℃ （idle） under windows 48~52℃ （idle）under Mavericks I don't think that is an GPU issue

extract this SSDTs to your extra folder and restart, only for T7500 ssdt-T7500.zip

Thank you ktbos, your list saved me lot of time maybe i have the same issue with the applehda, at volume change the slider and sound jumps to full volume then it's work normally for a while has your notebook stereo speaker ?, with headphones the same issue ? thank's hope that you understand this bad english

This kext is from Mavericks DP6, set the layout-id to 0 (zero)

I did it, AppleHDA.kext from 10.9 DP6 is working on a Latitude D630 codec STAC9205 if anybody needs this kext i can upload it

thank you for your efforts, but it's for an completely different codec yours ALC270 mine STAC9205, another nodes ! I have a patched and working kext on ML 10.8.5 which also works on mavericks but i want to patch the 10.9 kext

Here is the codec dump codec#0-stac9205.txt

Thanks for your reply It's for the STAC9205 codec edit: I tried to zero out all codecs but it's not working

What is the purpose of the binary patch after the codec line 7, and how do you calculate it ? I want to patch the Mavericks AppleHDA, the ML binary patch is not working anymore Thanks For AppleHDA 10.7.2 AND 10.7.3 Enter "FF 87 EC 1A" in search Box and enter "69 02 EC 10" in replace box Press "Replace All" button to replace Again enter "8F 1A 02" in search box and "84 9B 01" in replace box Press "Replace" button

its for D630 with x3100, but forget it here is a new one witch works on a vanilla Lion install updated to 10.7.5 you only need the fakesmc to startup, install you preferred PS2 kexts, audio and battery kext its not the final solution, but it works dsdt.aml.zip

So we have to replace the pci and mb1 memory map, i have done this, so try it, but you have to wait about 30 sec before boot up see attachment pcicrsdsdt.aml.zip

We all now that we have to replace the AppleACPIPlatform.kext after update to 10.7.4 and 7.5, but this can be fixed with a working dsdt.aml I think there is an memory range issue, because i replaced on PCI0 the _CRS Method and a few other things and it works, but i lost battery status With a working MacBook3.1 dsdt it also boots english is not my first language, sorry if its hard to understand