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Black Screen with MacPro 6,1 or iMac 15 or iMac 17 System Definition

Hello all, I have a weird issue. I'm currently working with iMac 15,1 system definition, using the AGDPfix app attached in this thread. However, my hackintosh won't boot when connected to the HDMI port, it just gives me a black screen when the desktop is supposed to appear. It does boot normally when connected via DVI, showing the right information in About this Mac, with working graphics acceleration and all. I've tried a couple of things, detailed in this post: GTX 750 Ti - HDMI ports not working.

Please help, thanks in advanced!
 
Just a heads up, the problem persists on Yosemite, apparently it's not only an issue of El Capitan.
 
furter said:
Black Screen with MacPro6,1 or iMac15 or iMac17 System Definition

Better way is rename in DSDT or SSDT device GFX0 to GFX1:

Example:

Device (GFX1)
{
Name (_ADR, Zero)
Method (_DSM, 4, NotSerialized)
{
Store (Package (0x0E)
{
"AAPL,slot-name",
Buffer (0x07)
{
"Slot-1"
},

"@0,connector-type",
Buffer (0x04)
{
0x00, 0x08, 0x00, 0x00
},

"@1,connector-type",
Buffer (0x04)
{
0x00, 0x08, 0x00, 0x00
},

"@2,connector-type",
Buffer (0x04)
{
0x00, 0x08, 0x00, 0x00
},

"@3,connector-type",
Buffer (0x04)
{
0x00, 0x08, 0x00, 0x00
},

"@4,connector-type",
Buffer (0x04)
{
0x00, 0x08, 0x00, 0x00
},

"hda-gfx",
Buffer (0x0A)
{
"onboard-1"
}
}, Local0)
DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
Return (Local0)
}
Click to expand...
Could anyone confirm this?
 
Build 1
TUF Z370-PLUS GAMING |  i5 9600K |  Radeon RX 580 GTS XXX Edition
http://i.imgur.com/undefined.jpg Sorry for posting yet again to this thread but I have a concrete problem..

After patching the kext using config.plist i get this error message and a halt

I have problem 4 using method one btw. Booting from USB with nv_disable=1 still works of course but without nv_disable i get the no video signal symptom.

Hopefully I've added the image correctly. Could anyone help me?
 
Last edited:
Build 1
TUF Z370-PLUS GAMING |  i5 9600K |  Radeon RX 580 GTS XXX Edition
Marcus2630 said:
undefined.jpg
Sorry for posting yet again to this thread but I have a concrete problem..

After patching the kext using config.plist i get this error message and a halt

I have problem 4 using method one btw. Booting from USB with nv_disable=1 still works of course but without nv_disable i get the no video signal symptom.

Hopefully I've added the image correctly. Could anyone help me?
Click to expand...
You have to disable SIP when using patched kexts.

Also, I can't view your image.
 
Build 3
Prime Z490-A |  i9 10850K |  Radeon Other
Build 1
Rampage IV Extreme |  i7 3930K |  GeForce GTX 580
Build 2
Rampage IV Black Edition |  i7 4930K |  GeForce Titan X Pascal
zlei said:
hi. it fails to patch on macos sierra. any update in the future?thank you
Click to expand...
Probably not. My preference is still Yosemite. See if pikeralpha has anything to offer. This app just automated his patch instructions and findings.
 
Build 3
Prime Z490-A |  i9 10850K |  Radeon Other
Build 1
Rampage IV Extreme |  i7 3930K |  GeForce GTX 580
Build 2
Rampage IV Black Edition |  i7 4930K |  GeForce Titan X Pascal
zlei said:
hi. it fails to patch on macos sierra. any update in the future?thank you
Click to expand...

shilohh said:
Probably not. My preference is still Yosemite. See if pikeralpha has anything to offer. This app just automated his patch instructions and findings.
Click to expand...

pikeralpha has a Clover plist patch here

edit: this is linked to in the OP
 
Last edited:
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