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e7240 Yosemite 10.10.3 Problems


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That's quite normal, but can you confirm you reached the Yosemite desktop? You now need to finalise tuning to obtain graphics acceleration. You could do that either by faking HD4600 Desktop or by patching the graphics kext.

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Jake has posted several posts about the method to fake desktop HD4600 GPU (id 0x0412) with kexts. I'm sorry I don't have links at hand but you'll find them in the guide section or through the Search engine. You can also consult my E6440 Mavericks/Yosemite guide which fully details the methods I followed to patch the Azul frame buffer kext to support the mobile HD4600 GPU (id 0x0416). The exact same principles will apply to your HD4400.

 

PS: afaik, Chameleon boot parameter "IntelAzulFB=xxx" is ineffective with Yosemite. With my E6440, it worked perfectly with Mavericks, never with Yosemite. I had to patch the DSDT.

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Start reading from this post, resolved for the same model.

 

or

 

Try this by Mirone. Just run  Patched_IntelHD4400_v2.sh

 

Search for this in the DSDT.aml with MaciASL.app

                  Return (Package (0x0A)                
                  {
                    "device-id", 
                    Buffer (0x04)
                    {
                         0x12, 0x04, 0x00, 0x00                         
                    }, 


                    "AAPL,ig-platform-id", 
                    Buffer (0x04)
                    {
                         0x06, 0x00, 0x26, 0x0A                         
                    }, 


                    "hda-gfx", 
                    Buffer (0x0A)
                    {
                        "onboard-1"
                    }, 


                    "model", 
                    Buffer (0x0E)
                    {
                        "Intel HD 4400"
                    }, 


                    "AAPL00,DualLink", 
                    Buffer (0x04)
                    {
                         0x01, 0x00, 0x00, 0x00                         
                    }
                })
replace with this
                Return (Package (0x06)
                {
                    
                    "AAPL,ig-platform-id", 
                    Buffer (0x04)
                    {
                         0x06, 0x00, 0x26, 0x0A                         
                    }, 

                    "hda-gfx", 
                    Buffer (0x0A)
                    {
                        "onboard-1"
                    }, 

                    "model", 
                    Buffer (0x0E)
                    {
                        "Intel HD 4400"
                    }, 
                })
 
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Same thing happens using both methods, it seems that AppleIntelFrameBufferAzul.kext is causing it because if i boot without it by removing it, I can boot without QE/CI. Here is a vid of what happens, similarly when i boot without verbose, the screen flashes and stays on the Apple loading screen. I tried with flags "-v -f IntelAzulFB=12"  "-f IntelAzulFB=12" "-f" and once without flags but same results.
 

 

Thanks

IMG_0865.MOV

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