21:9 LG Ultrawide 34UM88-P displayport display sleep wake up problem

[wishmylove]

I have bought a new 21:9 Ultrawide (LG 34UM88-P) for my hack connected with Dp the screen works like a charm.

My problem is after Display sleep, Monitor stays black with display port. With HDMI cable the monitor wakes up without problem.
Displayport cable enables 60hz but HDMI doesn't, so I want to use displayport cable. Any solution guys? Thank you very much!

Monitor: 21:9 LG Ultrawide 34UM88-P
OS: Sierra 10.12.4
mainboard: ASUS Z170I Pro Gaming
GPU: Intel® HD Graphics 530
CPU: Core i7-6700K

[Cyberdevs]

AFAIK This is a know issue with IntelHD530 graphics,

 

Try using Lilu.kext and IntelGraphicsFixup.kext and see if they solve the sleep problem.

 

and you might also need to patch the framebuffer for IntelHD530.

[wishmylove]

AFAIK This is a know issue with IntelHD530 graphics,

 

Try using Lilu.kext and IntelGraphicsFixup.kext and see if they solve the sleep problem.

 

and you might also need to patch the framebuffer for IntelHD530.

Thank you very much for you answer! I will try it!

[DMMA]

How did you get Display Port working on ASUS Z170I Pro Gaming motherboard?

I only have it working on Clover, once system boots I get no signal

[DMMA]

Fergarth likes this

this Clover patch got it working in Sierra and High Sierra 

            <dict>
                <key>Comment</key>
                <string>0x19120000 three DP, credit RehabMan</string>
                <key>Disabled</key>
                <false/>
                <key>Find</key>
                <data>
                /wAAAAEAAAAgAAAAAQUJAAAEAACHAQAAAgQKAAAEAACH
                AQAAAwYKAAAEAACHAQAA
                </data>
                <key>Name</key>
                <string>AppleIntelSKLGraphicsFramebuffer</string>
                <key>Replace</key>
                <data>
                AQUJAAAEAACHAQAAAgQKAAAEAACHAQAAAwYKAAAEAACH
                AQAA/wAAAAEAAAAgAAAA
                </data>
            </dict>