E7450 ElCapitan - fix and finetune

[Jake Lo]

You need the new version of AppleHDA_ALC293.kext as noted in the Updates section of the guide.

[rschultz101]

10.11.4  combo update, with new kext ->You need the new version of AppleHDA_ALC293.kext as  noted in the Updates section of the guide.

 - thanks to the forum crew !  

- after rebuilt kext manually 

- sound works !!  hurray 

[rschultz101]

update , replace lcd screen 1366x768  with FHD 1920x1080 LED IPS matte screen 

 - works ,   bios still A07 

strange  that at boot is locked up 3 x  before it booted into OS X. 

 oh,  dell just released today an A11 bios .

is there an way to extract the .rom file,  since I'am not running windows, and in vmware it does not extract. 

and should work flashing from usb or SD card

[Jake Lo]

Note: Settings retained even after BIOS update and not need to run again

 

I've updated A07 to A10 but the DVMT retained so I didn't have to redo it. I'll check A11 to see what fixes it included before updating.

[rschultz101]

note on LCD replacement, 

- IPS  instead of TN , more power consumption  , down to ~5:40  on 40whr battery 

- get a new bezel , since it has glue on the edges

- do like the Matte screen , 

questions:

- anybody got the skylake 6th gen CPU  working ?

  - since all the new E7000 series are now coming with 6th gen cpu's

[Jake Lo]

I have a semi working E7270 with HD 520 here. Still working out the HDMI and audio.

[rschultz101]

of course, 2 weeks after I deliberately got the 5th gen cpu, they support the 6th gen.  pfft 
 do wanna see a dell with UHD screen running on el capitan

[cptscruffy2]

10.11.4  combo update, with new kext ->You need the new version of AppleHDA_ALC293.kext as  noted in the Updates section of the guide.

 - thanks to the forum crew !  

- after rebuilt kext manually 

- sound works !!  hurray 

 

just to double check, since I failed my 10.11.4 update before. 

 

you rebuilt the kextcache, not the actual new ALC293 kext? 

 

and did you just drag and drop AppleHDA_ALC293.kext into S/L/E with redoing the permissions and kextcache rebuild? 

 

edit: 

nevermind, 

i already had the new AppleHDA_ALC293.kext installed. I put it in after a fresh reinstall of 10.11. followed with a 10.11.3 combo update -> 10.11.4 combo update. everything is running well with the .4 update.

[klaus385385]

Hello OSX Latitude Forum,

 

I have the Dell Latitude E7450 as well and have been for past two days following the guide Jake Lo has written with the updates but keep getting a kernal panic. 

 

I am hoping for some help it would be greatly appreciated.

 

Questions:

 

1. "rename it as EFI to the root of the “EFI†partition, replacing the existing folder ( not merge)" <- From Jake Lo's guide does this imply to delete the EFI folder with all the following directories; (ACPI, BOOT, CLOVER, KEXTS, etc...) 

      A. When i do this btw it doesnt even boot from the USB.

      B. But, when i overwrite the files from the 7450_Update.zip file i get it to boot fine with the exception of the kernel panic. This kernel             panic being with (AppleIntelLBDWGraphicsFramebuffer(10.1.4), IOPCIFamily(2.9), IOSAcceleratorFamily(205.3), IOReportFamily(31)           AppleGraphicsDeviceControl (3.12.6), & IOGraphicsFamily (2.4.1)

 

 

Things to note:

 

1. This Laptop is running A07 rom

2.  The DVMT has been successfully changed to 64mb

3. Tried Using the Apple Install OS X for 10.11.4 (Should i use base 10.11?)

[Jake Lo]

1. I have updated A07 to A10
2. DVMT should be set to 96MB (0x3)
3. 10.11.4 should be fine. I'm running 10.11.4 now on the E7450.