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ssprod

NUC8 Dual Display?

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Greetings Maldon.. Been using this NUC with Catalina 10.15.5 without issue with a single monitor (HDMI). I've picked up a second display (HDMI) and am trying to connect that to the USB-C output on the NUC. No luck so far, new monitor is black screen and previous working monitor turns on without any display. Any assistance would be most appreciated. Thanks so much. 

Intel NUCBEB

i3-8109U

Iris Plus 655

Clover

Catalina 10.15.5

https://u.pcloud.link/publink/show?code=XZjn7fXZEIgKimlojd42IVgoKifnIbb3GP0V

 

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add agdpmod=vit9696 and igfxonln=1

if dont work u need change connectors

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here. try

Quote

<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
            <dict>
                <key>framebuffer-con0-enable</key>
                <data>AQAAAA==</data>
                <key>hda-gfx</key>
                <string>onboard-1</string>
                <key>enable-hdmi20</key>
                <data>AQAAAA==</data>
                <key>framebuffer-patch-enable</key>
                <data>AQAAAA==</data>
                <key>AAPL,ig-platform-id</key>
                <data>CQClPg==</data>
                <key>model</key>
                <string>Intel Iris Plus Graphics 655</string>
                <key>device-id</key>
                <data>pT4AAA==</data>
                <key>framebuffer-con0-type</key>
                <data>AQAAAA==</data>
            </dict>

 

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some things in weg

  • -igfxtypec¬†to force DP connectivity for Type-C platforms.

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ye

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Greetings Maldon.. Initially the same issue existed with the USB-c display not working, however if I plug it in after the HDMI display has booted to the desktop, both displays seem to be working fine. Is there a way I can correct this so it boots normally with both monitors connected? Thanks so much. 

 

Edited by ssprod
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i never check this usb-c video

in other forum any people use it?

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13 hours ago, MaLd0n said:

i never check this usb-c video

in other forum any people use it?

Maldon, thanks for your efforts here.. I have not seen specific reference to it on these NUC's, however a few people have used the USB-c output on these units to drive a Thunderbolt display. I'm connecting via HDMI. What's strange is that it works perfectly if I plug the USB-c display in after boot up/log in. If it's connected prior to bootup, it's messed up. Apparently, with Windows, it works fine as a secondary display. 

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ye. some mistery ;) 

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hi ther,

i have olso 2 nuc's

Nuc10i7 and nuc8i3

if i pluged dual display and booting the system, after booting black screen. (27 inch 2K) 1 over hdmi , and 1 over usb-c (thunderbolt) 

if i start with a one display all ok, hotplug usb c display , all ok. 

sound over hdmi and thunderbolt ( dispslay port in config ) ok

 

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