MP 7,1 Radeon Pro 580X doesn't want display to DisplayPort

[BRVLN]

I have two (kinda old) Samsung monitors that have only DVI and full-size DP inputs.
I have tried two different cables but nothing seems to work.
For some reason, the 2019 Mac Pro doesn't want to convert the HDMI signal into DP.
I tried an HDMI monitor and it works fine... But I need those two monitors to work...
Any suggestions?
Am I missing anything?

Thanks.

 

[MIKX]

Maybe this might help. Works in my 4.1>5,1 RX 580 8gb - DP to HDMI.

HDMI from 7,1 to active adapter - DP to DP cable then to monitor's DP port.

JDA158 DisplayPort to 4K HDMI Activeã¢ããã¿ã¼

â ãã©ã¤ãã¼ã¤ã³ã¹ãã¼ã«ä¸è¦ãDisplayPort ãæè¼ããPC ã§ãã¢ããã¿ã使ç¨ãã¦å¤é¨ãã£ã¹ãã¬ã¤ã¾ãã¯ããã¸ã§ã¯ã¿ã«æ¥ç¶ãããã¨ãå¯è½ã â¡ ãã¸ã¿ã«æ åã»é³å£°ããHDMI ã³ãã¯ã¿ãæã¤ãã¤ãã¸ã§ã³ãã¬ããããã¸ã§ã¯ã¿ã¼ãªã©ã«åºåããé«åä½ãªãã¸ã¿ã«é³å£°ã¨æ åã楽ãããã¨ãã§ãã¾ããâ»é³å£°ã®åºåã¯ä¸é¨ã®é³å£°åºåã«å¯¾å¿ããæ©ç¨®ã®ã¿å¯¾å¿ã¨ãªãã¾ãã â¢...

jp.j5create.com

( PS : Also gives me HDMI audio without any 3rd. party kexts - probably doesn't apply to the 7,1 )

 

[mikas]

It's got two HDMI ports?
AMD Radeon Pro 580X graphics processing unit (GPU) with 8GB of GDDR5 memory and two HDMI 2.0 ports
So 2x HDMI to DVI cables should work. They (HDMI and DVI) carry the same type of signaling. Displayport is another kind of signal and would need what MIKX suggested above. Active adapters can be costly sometimes.

 

[nicho]

Maybe this might help. Works in my 4.1>5,1 RX 580 8gb - DP to HDMI.

HDMI from 7,1 to active adapter - DP to DP cable then to monitor's DP port.

JDA158 DisplayPort to 4K HDMI Activeã¢ããã¿ã¼

â ãã©ã¤ãã¼ã¤ã³ã¹ãã¼ã«ä¸è¦ãDisplayPort ãæè¼ããPC ã§ãã¢ããã¿ã使ç¨ãã¦å¤é¨ãã£ã¹ãã¬ã¤ã¾ãã¯ããã¸ã§ã¯ã¿ã«æ¥ç¶ãããã¨ãå¯è½ã â¡ ãã¸ã¿ã«æ åã»é³å£°ããHDMI ã³ãã¯ã¿ãæã¤ãã¤ãã¸ã§ã³ãã¬ããããã¸ã§ã¯ã¿ã¼ãªã©ã«åºåããé«åä½ãªãã¸ã¿ã«é³å£°ã¨æ åã楽ãããã¨ãã§ãã¾ããâ»é³å£°ã®åºåã¯ä¸é¨ã®é³å£°åºåã«å¯¾å¿ããæ©ç¨®ã®ã¿å¯¾å¿ã¨ãªãã¾ãã â¢...

jp.j5create.com

View attachment 890450


( PS : Also gives me HDMI audio without any 3rd. party kexts - probably doesn't apply to the 7,1 )

OP's desire is to go the other way though - HDMI to DP. These adapters and cables often are one-way only... in this case, DP to HDMI.

Something like this - HDMI to DisplayPort Adapter - 4K 30Hz - would be what is needed. Alternative that might be cheaper would be to use a HDMI to DVI converter or cable.

hdmi to dvi | Newegg.com

Search Newegg.com for hdmi to dvi. Get fast shipping and top-rated customer service.

www.newegg.com

 

[mikas]

^good catch.
And if the mentioned monitors DVI port expects only analog signal, then HDMI to DVI cable would not work alone. It would need signal converting too:
DVI connectors (digital and analog signals)
Compatibility_with_DVI

 

[astrorider]

I have two (kinda old) Samsung monitors that have only DVI and full-size DP inputs.
I have tried two different cables but nothing seems to work.
For some reason, the 2019 Mac Pro doesn't want to convert the HDMI signal into DP.
I tried an HDMI monitor and it works fine... But I need those two monitors to work...
Any suggestions?
Am I missing anything?

Thanks.

This cable worked for my older Dell monitors (1920x1200) that similarly only have DVI and Displayport inputs: https://www.amazon.com/gp/product/B07D6RL3VN

 

[thexash]

My dell monitor is connected to display port but I'm using a Caldigit TB3+ dock and a TB to DP port cable. MacPro's TB -> Caldigit -> Display's DP.

 

[BRVLN]

Thanks guys!
Yeah, I had two HDMI to DP cables but as mentioned before I guess they were more DP to HDMI,
So I tried two regular HDMI cables with the aforementioned DP to HDMI adapter but it's a no go too...
So I'm currently waiting on these: https://www.amazon.ca/gp/product/B00B2HORS6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
It sucks to go DVI again, but it's cheaper than replacing two 27'' monitors, and honestly, I'm not doing anything fancy with 4k or video or anything like that so I should be ok.

Interesting findings though!!
Thanks again! Much appreciated!

 

[MIKX]

Well at least people in this thread are thinking about options, solutions.
I'm not really much help as I don't have a 7,1 (yet).

 

[bcomer]

Using a USB C (Thunderbolt) to DP cable with a 7,1 and Asus PS329Q - works great.