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Lenovo P400 El Capitan Intel HD 4000 not working


embergeorge

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You said you were using Chameleon... Which version exactly. For El Capitan, you should use the Enoch branch because mainstream Chameleon still does not support 10.11 as far as I know. Enoch r2795 works perfectly on all my Hacks.

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That's a distro and we don't know what kexts were modded, removed or added, it's hard to determine the issue.

Which version of El Capitan is this?

Perhaps you could replace the vanilla AppleIntelFramebufferCapri.kext family.

Can you verify if the following exist in /System/Library/Extensions:

 

AppleIntelFramebufferCapri.kext

AppleIntelHD4000Graphics.kext

AppleIntelHD4000GraphicsGLDriver.bundle

AppleIntelHD4000GraphicsMTLDriver.bundle

AppleIntelHD4000GraphicsVADriver.bundle

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Worked for a moment! I don't know how! I wrote on org.chameleon.Boot.plist

 

<key>IntelCapriFB</key>

<string>4<s/tring>

 

 

Tried to boot with -x just to see if any difference.

I got black screen because of the typo

I poweroff using the power button

I start with -x -v -f IntelCapriFB=5

I edit again the file to fix the mistake

Shutdown -  Power on and just worked!

 

I shutdown and I rebooted again and now I get an image like my screen is smashed!!!

 

One second to take screen to post the results of the command!

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I booted to system using -x -v -f
I completely removed Capri strings
Now rebooting I get black screen.
I start booting using IntelCapriFB=1,2,3,4
On IntelCapriFB=6 & 7 I get kernel panic
On all the others I get black screen
On IntelCapriFB=4 seems to have something like smashed screen and some other times just works as it should be!!!!!!!!
I really cannot understand what's happening!
 
This moment it just works! I booted using IntelCapriFB=4 on boot and I have none Capri string on my boot.plist file. If I reboot probably will stop working again! Here we are:
Screen_Shot_2016_01_04_at_6_24_12_PM.jpg
 
Also another question I have is why now? Two days now, I try every possible combination of CapriFB and this setting, I tried it at least 20 times? Why now? Like somethings is wake up suddenly!

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You should not use the -x flag; that calls on the safe mode which normally prevents graphics kexts to load. You'll never obtain graphics acceleration/support in safe mode.

 

If you manage to boot your system on occasion, why don't you create a proper vanilla USB installer instead of using that distro which clearly appears to cause issues (as they often do)?

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