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MBP Stuck at 30hz  

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Mike
 Mike
(@mike)
Eminent Member
Joined: 5 years ago
 

Hi,

Haven't been here in a while as I was running a Hackintosh for a couple years but just assembled:

2019 15" MBP i9 running Catalina 10.15.4

Asus XG Station Pro EGPU with 5700 XT

I have a LG32UD99 USB-C monitor

Caldigit TS3+ with latest firmware.

  • I get 30hz from TS3+ displayport using Caldigit displayport to HDMI Active Adapter to monitor
  • I get 30hz from 5700xt hdmi to monitor
  • I get 30hz form 5700xt DP using Active Adapter to hdmi to monitor
  • I get nothing from either TS3+ or 5700xt using displayport cable included with monitor
  • I get 60hz when using USB C cable direct from MBP
  • I get 60hz when using USB C cable in TS3+ downstream thunderbolt port

My Caldigit DP->HDMI adapter supports 4k@60hz.  I have tried three different HDMI cables that I have tested on a different windows machine that gets 4k@60hz so its not the cable.  I have never been able get DP to DP working.  I have easyres before anyone asks.  And I am only looking for this res in MacOs, I am not running bootcamp at the moment.

I am fine doing downstream port USB-C but when using e-GPU, I would like 60hz as well. 

I am at loss at this point for what to try next if anyone has any ideas.

2019 15" MBP i9 32GB - Catalina 10.15.4
Asus XG Station Pro e-GPU
Gigabyte 5700 XT
Caldigit TS3+ Dock


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itsage
(@itsage)
Founder Admin
Joined: 5 years ago
 

I've found HDMI in macOS is never a pleasant experience. If possible switch to DisplayPort connection. You can also try a software utility such as SwitchResX to set the resolution and refresh rate manually.

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Mike
 Mike
(@mike)
Eminent Member
Joined: 5 years ago
 

@itsage, Thank you for your response.   I haven't been able to get DP to DP to work either gpu to monitor or TS3+ to monitor.  Nothing.  I can get DP - hdmi or hdmi to dp with an active adapter, but only at 30hz.

 

 

 

2019 15" MBP i9 32GB - Catalina 10.15.4
Asus XG Station Pro e-GPU
Gigabyte 5700 XT
Caldigit TS3+ Dock


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Mike
 Mike
(@mike)
Eminent Member
Joined: 5 years ago
 

Finally got DP to work by doing a monitor firmware update.  @60hz DP which fits the bill.  Still 30@hz HDMI but not worth the time to sort it out now that DP works.

 

2019 15" MBP i9 32GB - Catalina 10.15.4
Asus XG Station Pro e-GPU
Gigabyte 5700 XT
Caldigit TS3+ Dock


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