Sony Vaio VPCEH2C5E - Black Screen at Boot

[PattPatel]

Make sure you're using an SMBIOS that is accommodated for NVidia by AppleGraphicsDevicePolicy.

Or use the patch:
Comment: AppleGraphicsDevicePolicy (board-id) patch, credit Pike R. Alpha
Name: AppleGraphicsDevicePolicy
Find: <626f6172 642d6964>
Replace: <626f6172 642d6978>

Nice trick!
I'll try and let you know. Thank you!

 

[PattPatel]

No luck, it's not working.
PC starts with black screen, then i put it in sleep, recover it.
Sometimes crashes and reboots (clover says it's hibernated and never boot it again until I don't cancel the hibernation) sometimes runs the ui with all graphics working.

 

[RehabMan]

No luck, it's not working.
PC starts with black screen, then i put it in sleep, recover it.
Sometimes crashes and reboots (clover says it's hibernated and never boot it again until I don't cancel the hibernation) sometimes runs the ui with all graphics working.

Different issue. Probably need to inject EDID.

 

[PattPatel]

Different issue. Probably need to inject EDID.

I was already injecting EDID.
However I solved... by installing Windows.
Don't misunderstand... not instead of osx
I partitioned my disk and installed windows 10, with the NVidia driver.
Yes it sounds strange, but then everything started to work fine also in OSX.
I don't know if there was something wrong between my display and my video card, that the nvidia windows driver restored or somewhat.
But now osx works as expected.

Thank you for everything.