MP 1,1-5,1 MP5.1 / GTX680 HDMI+DP not working OS 10.14.6

[siox23]

Hello,

First I want to thank the people which share theire knowledge here in the forum. Without these informations my mp wouldn't work. Thank you!

I tried various things but couldn't find a solution for my problem - maybe someone here can help me.

Scenario 1:


OS High Sierra
MP5.1
GTX680 2GB (Zotac) flashed with dosdude's rom
Dell P2719HC Display

HDMI output working with bootscreen.
DVI-D output with adaptor to HDMI not working
DP output not working

Both DVI outs working on an older screen with DVI. (DVI-DVI cable)


Scenario 2:


OS Mojave 10.14.6
Hardware as above

DP output not working
DVI-D output with adaptor to HDMI not working

HDMI partial working:
I see the bootscreen, bar shows the system booting.. after aprx. 75%: distorted screen.
But the system boots completely: when i connect my old DVI capable monitor everything works fine - i see the login screen.

I tried the tripple PRAM reset - no luck.

I would appreciate if someone could post an idea how i could proceed.

Thank you!

(pls excuse my english - im not a native speaker)

 

[JoSch]

I have exactly the same problem with a 3,1. The DVI port (at least one) are working. The HDMI port is not.

 

[siox23]

i installed lilu + whatevergreen to see if that kext's would fix the problem. but they don't - beside i have the feeling that the mp is booting faster now.

nobody else experiencing this problem?

a working hdmi port would be so great....

otherwise i have to get another DVI monitor or another GPU