Jake Lo

Patched your file. Rename it to DSDT.aml E6420_biosA22.aml.zip

You need the SSDT.aml for power management. It helps enable sleep and battery management. I have not bother with docking station, but you can take a look here. HDMI has been patched already in the config. You could also check Hervé's finding here for HD3000 but you'll have to experiment it with HD4000.

So only thing you did was generate a new SMBIOS serial? are you using the same MBP9,2? For audio, try booting without cache, fix the permission and rebuild cache, then boot normally.

Hmm, I'm not seeing any significant difference. Why don't you go ahead and replace the whole EFI if it's working for you.

Upload your EFi from your installation disk.

Did you read step 14 of 2: Install OS X El Capitan? For sound, make sure to follow steps 6 to 8 of 3: Post-Installation For function keys, I believe it has the same keyboard as E7450. Follow the post install of that guide.

Use beta version linked in my E7450 guide.

No. You Broadwell system was supported starting at 10.10.5 but not really stable until 10.11.0. So I would suggest go with 10.11.5. In order to have a successful build you'll need to set the preallocation memory to 96MB (DVMT). See my Broadwell guide for starter.

See my E7450 guide under prerequisite. Once you have the DVMT updated, the error will go away.

How do you suppose audio will work if you disabled those hot patches use with AppleHDA_ALC292? Unless you patched AppleHDA itself. What's your output when you ran the commands to repair permission and rebuild cache?

Check system information, under camera and USB to see if it's listed.

Did you generate a new smbios with Clover Config? to fix iMessage, try this -run "uuidgen" in terminal and paste the result into the SmUUID block in the SMBIOS page of Clover Configurator -on the same page, copy and paste the contents of the Serial Number block into the Board Serial Number block, adding 5 random HEX characters (digits) to the end webcam could be an USB issue. I'll have check on that, webcam was working OOB for me the last time I checked though. Will confirm later Docking station will be an USB Issue as well, only on El Capitain, Yosemite won't have this issue due to the way El Capitan injects USB devices

so with my bootpack and DSDT, system will crash? what error did it show when it crashed?

So you're using the E6430 bootpack? It does include a patched DSDT, but it depends on you display resolution. If the display is 1366x768, you should use the E6230 bootpack instead.

Is there a particular bootpack you were using? do you have a patched DSDT?

See here, assuming you're using a dummyHDA. Look under 10.11.4. If you don't see you kexts, then you could update yours.

Move your memory stick from slot B to slot A if you only have 1

have you tried Mirone's auto patcher?

Make sure the kexts in /EFI/Clover/Kexts/Other/LE are copied to /Library/Extensions. Ignore the popup message and run the permission fix and rebuild cache successfully. exit code should not be 77.

I just want to confirm that you didn't skip a step or that all the files are copied successfully. Dell does not whitelist their wireless cards, but if you have an Intel Wireless, OS X does not currently support it. See list of supported cards here.

check the USB installer /System/Installation, there's a Packages folder with Essentials.pkg and other files and folders in it, not a link to Packages

You could follow my E7450 Guide, I just uploaded a bootpack in the Installation linked in the guide. Make sure to read all the notes and warnings before proceeding. Your wireless card will need to be replace with a DW1560 or any compatible USB wireless device.

Yes, install the combo update. After reboot, run myHack/myfix (quick). Reboot once again.

It'll work once Karabiner is loaded after startup.

I think it has the same keyboard layout as the E7450. See solution here under post install using Karabiner as Hervé said.