<< Solved >> No output via DisplayPort

[sajjad365]

Running Mojave via Opencore using RX570, SMBIOS is configured for iMac 19,1. Changed SMBIOS to MacPro6,1 but no change.

Only using one monitor: DVI and both HDMI work but neither DP works.

I am running the latest WEG and Lilu

Any ideas? Please and thank you!

 

[Blableuh]

Maybe make sure your monitor's DP entry works with another computer.
Also, make sure your monitor is turned on BEFORE turning on the computer (it's a weird one but it's still a thing with DP and some monitors/configs if not all)

 

[sajjad365]

Maybe make sure your monitor's DP entry works with another computer.
Also, make sure your monitor is turned on BEFORE turning on the computer (it's a weird one but it's still a thing with DP and some monitors/configs if not all)

Unfortunately no way of testing monitor's DP as I dont have another computer.

The monitor is on prior to turning on the PC.

Also, just realized the monitor (on HDMI) takes up to 30 seconds and keystrokes to wake up from sleep so I think I have a GPU config issue, not a DP port issue necessarily.

 

[sajjad365]

@Pavo any thoughts? Thank you.

 

[theruck]

if you test the DP with an adapter DP to HDMI it needs to be an active adapter

 

[sajjad365]

if you test the DP with an adapter DP to HDMI it needs to be an active adapter

I'm not using any adapters. DP to DP works on bios screen then shutsoff when booting to Mac (doesn't even show Apple logo). HDMI to HDMI works the entire time.

 

[theruck]

show us the screenshot from hackintool from installed kexts - installed only
aslo make sure the iGPU is disabled in bios

 

[sajjad365]

So it turns out to be the monitor:

1. The DP cable was bad - tested with another monitor and the image was flickering, shutting off, repeat.
2. No audio via HDMI (not sure if cable or monitor itself)

I tested two other monitors, in dual config as well, and there were both ok via HDMI and DP.

Simple but frustrating. Thanks mates!