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Dual monitors after update 10.15.6

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Joined
Apr 1, 2020
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Motherboard
Asus ROG STRIX Z390 Gaming -H
CPU
Intel Core I7 8700K
Graphics
Radeon RX 5700 XT
Asus Z390 Gaming-H, Core i7 8700K, Sapphire NITRO+ RX 5700 XT,

Dual monitor setup (2 x Displayport)

Smbios : iMac 19,1 with iGpu only for computing (no displays connected)
Opencore : 0.5.9
Lilu : 1.4.6
WhateverGreen : 1.4.1

agdpmod-pikera in config.plist



After updating to Catalina 10.15.6, dual monitors causing black screen after boot. The DisplayPort for my second monitor causes the issue. The other DisplayPort works fine. (This was working 100% in Catalina 10.15.5).

I know that NAVI cards are hit and miss with DP, but why it broke in this update!? :(


I feel i tried everything, maybe just need to wait for an updated lilu and whatevergreen??
Anyone has a clue?


-Morten
 
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Joined
Aug 4, 2020
Messages
1
Motherboard
Asus Z-370 A
CPU
Intel I5
Graphics
Onboard
Mac
  1. Mac mini
Mobile Phone
  1. iOS
I had the same Problem
Asus Z370A with Dual monitor setup (DVI + Displayport)
Was working before update to 10.15.6

After upgrading LILU to 1.4.6 and Whatevergreen to 1.4.1 is working again:headbang:
 
Joined
Apr 1, 2020
Messages
2
Motherboard
Asus ROG STRIX Z390 Gaming -H
CPU
Intel Core I7 8700K
Graphics
Radeon RX 5700 XT
Just tried the updates of lilu and whatevergreen, but unfortunately still no love. As soon as I connect the second display, both displays go black. Both of my displays are connected to the Radeon RX 5700 XT. Also tried to connect the second display to the iGPU, which does work, however catalina freezes after a short while....

But thanks for the heads-up "caplod". :)
 
Joined
Jul 15, 2020
Messages
1
Motherboard
z390g
CPU
i7 8700K
Graphics
5700xt
my: Z370g+8700k+5700xt+dual monitors(dp&hdmi)
I have the same problem. I don't know how to deal it.:eek:
 
Joined
Feb 11, 2012
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Motherboard
hack-pro
CPU
i7
Graphics
9500gt
Mac
Classic Mac
Mobile Phone
just chiming in, i was going crazy with all this, HDMI works, but displayport was black screen and in fact broke the HDMI signal too.
this seems silly in retrospect, but i was testing out the Displayport on an old monitor with a Displayport-to-VGA cable. Finally got the Displayport-to-HDMI cable out of the closet and plugged it into my TV and Voila - all ports fully working!
 
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Joined
Feb 22, 2015
Messages
55
Motherboard
Gigabyte z390 Aorus Xtreme
CPU
i9-9900k
Graphics
XFX 5700XT
just chiming in, i was going crazy with all this, HDMI works, but displayport was black screen and in fact broke the HDMI signal too.
this seems silly in retrospect, but i was testing out the Displayport on an old monitor with a Displayport-to-VGA cable. Finally got the Displayport-to-HDMI cable out of the closet and plugged it into my TV and Voila - all ports fully working!
what graphics card do you have? I have an XFX 5700 XT and I can't get a second DP connection to work, even if I do a DP to HDMI cable.
 
Joined
Jan 2, 2018
Messages
35
Motherboard
Gigabyte Z370 Aorus Ultra Gaming
CPU
i7 8800 3.7 GHz
Graphics
Onboard (Intel HD 6xx)
Mac
  1. iMac
Mobile Phone
  1. iOS
Experiencing a similar issue after updating from 10.15.3 to 10.15.6 -> Z370 AORUS Ultra Gaming | i7 8700 | HD 630
I have no display whatsoever though. Onboard DVI and HDMI not functioning but the machine is definitely booting up as it connects to the network and I can ping it from another machine.

lilu was updated and although I previously didn't need/use whatevergreen, I tried it and no dice. Since I don't have any dedicated graphics I don't think the agdpmod would make a difference for my use case. in fact I currently have -disablegfxfirmware as one of my bootargs although with/without my display is still blank.

If it helps to know, I had an issue up until 10.15.3 where a second display would have a pink/purple hue so I wasn't able to do that but I'd settle for a single working display right about now.

Luckily my CC backup drive is working and I can continue updating the main install EFI. I'd prefer not having to do a clean install right now.

Clover 5120 (tried 5121/22 but wasn't able to get into the boot loader on those versions - I believe there's a known issue)
 
Joined
Nov 4, 2020
Messages
1
Motherboard
Z490
CPU
i9-10900k
Graphics
rx5700xt
Asus Z390 Gaming-H, Core i7 8700K, Sapphire NITRO+ RX 5700 XT,

Dual monitor setup (2 x Displayport)

Smbios : iMac 19,1 with iGpu only for computing (no displays connected)
Opencore : 0.5.9
Lilu : 1.4.6
WhateverGreen : 1.4.1

agdpmod-pikera in config.plist



After updating to Catalina 10.15.6, dual monitors causing black screen after boot. The DisplayPort for my second monitor causes the issue. The other DisplayPort works fine. (This was working 100% in Catalina 10.15.5).

I know that NAVI cards are hit and miss with DP, but why it broke in this update!? :(


I feel i tried everything, maybe just need to wait for an updated lilu and whatevergreen??
Anyone has a clue?


-Morten
Hi! do you solve this problem?
 
Joined
Jan 2, 2018
Messages
35
Motherboard
Gigabyte Z370 Aorus Ultra Gaming
CPU
i7 8800 3.7 GHz
Graphics
Onboard (Intel HD 6xx)
Mac
  1. iMac
Mobile Phone
  1. iOS
I’ve moved the needle a bit on this issue but now I’m stuck with my intel HD630 only showing 7MB of memory which slows down everything graphic wise (screen refresh, video, photos app, metal).

Fixed the no screen issue by playing around with the graphic IDs in clover.

i may just wait at this point and do a full fresh install of Big Sur.
 
Joined
Jul 23, 2013
Messages
15
Motherboard
GIGABYTE Z390 M
CPU
i7 9700K
Graphics
UHD630
I’ve moved the needle a bit on this issue but now I’m stuck with my intel HD630 only showing 7MB of memory which slows down everything graphic wise (screen refresh, video, photos app, metal).

Fixed the no screen issue by playing around with the graphic IDs in clover.

i may just wait at this point and do a full fresh install of Big Sur.
Any luck fixing the ussue?
 
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