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E6420 research thread


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Almost have this working with Dual-boot Yosemite, Windows 10.

 

Have a couple of issues to clean up, mostly battery status.

 

Battery status still not working. Will come on once in a while. Unplug power adapter It show the "X" then sometimes LCD will dim and bat status will work, but then a few seconds later, lcd screen will go back to bright, and bat status is gone.

 

So, lcd screen is not always dimming with AC unplugged, will dim, and then go bright every few seconds. EDIT: This seems to have stopped?

 

LCD will sometimes pixelate badly on boot up, and need to reboot to fix. Will also pixelate and have lines on LCD during use. 

 

1600 x 900 HD+  LCD, HD3000, i5-2520m

 

Using Dell DW1520 Wifi, so I changed smbios to Macbook Air 5.2 (not sure if that matters).

 

Kexts used from this Guide:

 

https://osxlatitude.com/index.php?/topic/6935-guide-e6420-os-x-yosemite-10100-finalgm-3pb-4/

 

Using Clover Legacy boot. All kexts installed to S/L/E

 

Using DSDT from this Guide:

 

https://osxlatitude.com/index.php?/topic/7091-dell-latitude-e6420-with-i5-2410m-hd3000-and-1600x900-lcd-mavericks/

 

Using ssdt from this Guide:

 

https://osxlatitude.com/index.php?/topic/7914-dell-latitude-e6220-with-intel-i5-2520m-hd3000-and-1366x768-lcd-mavericksyosemite/

 

Not sure if DSDT has this patch:

 

 

 

into method label _STA parent_label BAT1 replace_content begin Return (Zero) end;

into method label _STA parent_label BAT2 replace_content begin Return (Zero) end;

 

 

 

New Way and Regions unchecked.

 

Any help greatly appreciated! :)

DSDT.aml.zip

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Okay, looks like I just about have this install done. Yosemite 10.10.5 Clover.

 

Generated a SSDT with latest ssdtPRGen.sh.

I had to change from SMbios 5.2 to SMbios 8.2 to get SpeedStep working. 

Changing to SM8.2 meant that my Dell DW1520 WiFi stopped working, so

I needed to add a Clover Kext Patch for the AirPortBrcm4360 to get my Dell DW1520 WiFi working again.

In Clover Configurator, KextsToPatch:
 
Find: 4D61632D32453646414239363536364645353843
 
Replace: 4D61632D39343234354133393430433931433830
 
Comment: DW1520 Whitelist Patch (MBP8,2)

SpeedStep now Working, along with:

Sleep 

Battery Status

Dell Dw1520 Wifi

HD3000 Graphics with 1600x900 HD+ LCD now working without picture artifacts. (Boot Arg Slide=0)

HDMI

Touchpad (Trackpad), with Double-Tap, and Two Finger Scroll

Onboard Dell375 Bluetooth OOB

SD Cardslot

 

Seems to be a very functional Hackntosh.

I might leave it alone for a week or two, and then try to install El Capitan. :)

post-68230-0-68078900-1449021386_thumb.png

post-68230-0-52922600-1449021416_thumb.png

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@morpheousman

 

Can you post your final SSDT?

 

To create it, did you just take the SSDT from the link in post 264 and just change the

mac model from a macbookpro 5.2 to a macbookpro 8.2 using the ssdtPRGen.sh

on your Hackintosh after the initial install was done?

 

Thanks

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