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3 monitors with ATI R9 380

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Joined
Aug 9, 2018
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13
Motherboard
Asus P9X79
CPU
i7-3930k
Graphics
Sapphire Radeon R9 380
Mac
  1. Mac mini
  2. Mac Pro
Procesor: i7-3930k
MB: Asus p9x79
Video: Sapphire Radeon R9 380
Clover 5108
EFI Atached, and screenshots with kexts.

My problem:
My video card can't output on 3 monitors, only on two. I have 4 ports (2dvi, 1 hdmi, 1 displayport). I've tried all of them, when i connect the third monitor, doesn't work.
On windows all 3 monitors work.
I've tried Lagotto framebuffer but no change (even with radeondeinit). On system report on framebuffer is empty even if i load the framebuffer in clover.
Everytime i connect the 3'rd monitor, no display, but if i connect one by one, works on every port.
On DPCI manager the card isn't showing. But if i run Geekbench the results are ok.
I've tried with inject fake id "0x69391002: Tonga PRO ( Radeon R9 285 / 380 )" but that also didn't work.

I have a second card (evga gtx 680 2gb, with 2 dvi, 1 hdmi, 1 dislayport) and all 3 monitors works without problems.

Also in idle, the fans are acting weird (40Celsius). Starts and stops at a very short period of time (5 second on, 5 second off). But that isn't a problem, only in time the bearings can suffer i think :)). My priority is to output to the 3'rd display.


Screenshot 2021-02-11 at 12.27.30.png
Screenshot 2021-02-11 at 12.31.26.png

Screenshot 2021-02-13 at 21.47.46.png
Screenshot 2021-02-13 at 21.48.22.png
Screenshot 2021-02-13 at 21.50.24.png
 

Attachments

  • Screenshot 2021-02-11 at 12.31.26.png
    Screenshot 2021-02-11 at 12.31.26.png
    266.9 KB · Views: 78
  • EFI.zip
    17.3 MB · Views: 75
Sorry, i forgot to update my profile. My old card was gtx 670.
I've updated.
 
Maybe this will help
I've used a tool amd framebuffer utility, and uploaded a bios from my card and got this.
Screenshot 2021-02-18 at 23.10.10.png
 
Up...someone have an ideea ?
 
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