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EVGA GeForce GTX 980 Ti SC GAMING ACX 2.0+ Mac Pro 4K 60Hz Signal Lost

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JHaas101
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2018/04/27 10:10:23 (permalink)
2009 Mac Pro (flashed to the latest Mac OS 12-cores) / TCL 43in 4K TV (supports 60Hz via HDMI ARC 2.0)
 
I'm trying to use this as my main monitor. I bought a brand new Insignia HDMI 8ft (supports 4K 60Hz) from BestBuy and it's plugged through Female HDMI-Male DVI because when I plug straight into HDMI, it doesn't come on. After setting the TV to HDMI 2.0, I head to Mac's System Preferences<Displays<Refresh Rate. The option for 60Hz is not grayed out, so I click it. After that, the screen goes black and there is no signal. Can someone please help me? I've done a lot of research and I really don't know what to do as I refuse to use the TV at 30Hz. I've read on Apple that the newer Macs can support 4K 60Hz, but that doesn't apply to me because I have this GPU, correct? Also, the option is available for me to use? The last culprit I think it is the DVI adapter, so I ordered a Display Port adapter hoping it would fix the issue of losing signal.
 
I've attached a link to a screenshot of my System Preferences.
 
post edited by JHaas101 - 2018/04/27 10:18:59
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    somethingc00l
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    Re: EVGA GeForce GTX 980 Ti SC GAMING ACX 2.0+ Mac Pro 4K 60Hz Signal Lost 2018/04/27 10:52:01 (permalink)
    DVI cannot physically support 4k 60 Hz, you will have to switch to HDMI 2.0 or DP.




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    JHaas101
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    Re: EVGA GeForce GTX 980 Ti SC GAMING ACX 2.0+ Mac Pro 4K 60Hz Signal Lost 2018/04/27 10:55:00 (permalink)
    I plugged the HDMI into the HDMi port, changed it to 60Hz and it still blacked out with the TV saying no signal.
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    JHaas101
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    Re: EVGA GeForce GTX 980 Ti SC GAMING ACX 2.0+ Mac Pro 4K 60Hz Signal Lost 2018/04/27 11:04:41 (permalink)
    Amazon Prime came through just now with  and it worked in the third to last full sized Display Port! I'm so glad it worked!
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    Dr.Death
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    Re: EVGA GeForce GTX 980 Ti SC GAMING ACX 2.0+ Mac Pro 4K 60Hz Signal Lost 2018/04/27 14:04:40 (permalink)
    don't you have to ''hack ''intosh  these cards in to a mac build ?   seems like you have to make it work 
     
    http://lowendmac.com/2018/mac-pro-21-nvidia-geforce-gtx-980-ti/
     
    I assume thes cards and ''made'' for mac use ?
     
    http://www.macvidcards.com/store/p49/Nvidia_GTX_980_Ti_6_GB.html
     
    may best google it around to see if its down to something you may need to do 
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