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Displayport 1.2 + 4k no signal

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Joined
Jun 10, 2014
Messages
34
Motherboard
Intel HM87
CPU
Intel Core i7 5700HQ
Graphics
Intel HD Graphics 5600
Mobile Phone
  1. iOS
HDMI + HDMI Sound works, but only 4k@30fps cause of HDMI version.
Videocard IntelHD 5600 doesn't support HDMI 2.0 so i desided to use Displayport for 4k@60fps, but it just didn't work.

When I plug in the cable - system freeze for a moment, monitor offers to use displayport instead of hdmi (in monitor settings), but after a second - "no singal". I tried to use pixelclock patch, but no result. By the way there is no option in monitor settings to change pixelclock or displayport version.

Also I tried this patch, but no results too.

On Windows displayport works properly 4k@60fps. Any ideas? Is it possible to make displayport work?

Attached CLOVER folder without themes and ioreg with/without monitor plugged

Code:
kextstat|grep -y acpiplat && kextstat|grep -y appleintelcpu && kextstat|grep -y applelpc && kextstat|grep -y applehda
   13    2 0xffffff7f8317d000 0x66000    0x66000    com.apple.driver.AppleACPIPlatform (5.0) 65E05472-6AE7-3308-8CC8-FA6CB0DB2AEE <12 11 7 6 5 4 3 1>

Code:
 sudo touch /System/Library/Extensions && sudo kextcache -u /
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooHDA.kext
kext-dev-mode allowing invalid signature -67013 0xFFFFFFFFFFFEFA3B for kext AppleMobileDevice.kext
KernelCache ID: 1A85460C665F6568382229E5668249D0
 

Attachments

  • CLOVER.zip
    4.1 MB · Views: 122
  • MacBook Pro.ioreg.zip
    721.7 KB · Views: 123
  • ioreg with monitor.ioreg.zip
    683.5 KB · Views: 155
Last edited:
HDMI + HDMI Sound works, but only 4k@30fps cause of HDMI version.
Videocard IntelHD 5600 doesn't support HDMI 2.0 so i desided to use Displayport for 4k@60fps, but it just didn't work.

When I plug in the cable - system freeze for a moment, monitor offers to use displayport instead of hdmi (in monitor settings), but after a second - "no singal". I tried to use pixelclock patch, but no result. By the way there is no option in monitor settings to change pixelclock or displayport version.

Also I tried this patch, but no results too.

On Windows displayport works properly 4k@60fps. Any ideas? Is it possible to make displayport work?

Attached CLOVER folder without themes and ioreg without monitor plugged

Code:
kextstat|grep -y acpiplat && kextstat|grep -y appleintelcpu && kextstat|grep -y applelpc && kextstat|grep -y applehda
   13    2 0xffffff7f8317d000 0x66000    0x66000    com.apple.driver.AppleACPIPlatform (5.0) 65E05472-6AE7-3308-8CC8-FA6CB0DB2AEE <12 11 7 6 5 4 3 1>

Code:
 sudo touch /System/Library/Extensions && sudo kextcache -u /
kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext VoodooHDA.kext
kext-dev-mode allowing invalid signature -67013 0xFFFFFFFFFFFEFA3B for kext AppleMobileDevice.kext
KernelCache ID: 1A85460C665F6568382229E5668249D0

Attach ioreg with monitor plugged in.
 
No external monitor shown in ioreg.
Does a non-4k (eg. 1080p) monitor work?
Unfortunately I haven't got smaller monitor nearby. I'll ask my friends, but it will take time.
What should I do if smaller monitor:
a) works
b) don't work
 
Unfortunately I haven't got smaller monitor nearby. I'll ask my friends, but it will take time.
What should I do if smaller monitor:
a) works
b) don't work

"works"... attach "Problem Reporting" files with the monitor plugged in.
Note: You could use any HDMI TV...
 
DP->HDMI cable.
Already found 1080p monitor with DP today. But no luck to make it work. No signal. Here's ioreg with monitor connected.
 

Attachments

  • MacBook Pro.ioreg.zip
    624.1 KB · Views: 131
Already found 1080p monitor with DP today. But no luck to make it work. No signal. Here's ioreg with monitor connected.

It is possible your DP port is connected to the 0306 connector.
It is missing from the ig-platform data in 0xa260006.
See my Probook github (beta branch), config_parts/config_Haswell.plist (there are two patches required... "Enable fourth connector by changing port count, 0x0a260006, RehabMan", and "Add missing 0306 DP connector").
 
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