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[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

Is anyone running a 5k-Display on an RX580 with this build? I got a iiyama XB2779QQS 5K-Display connected via a DP 1.4 cable on an PowerColor Radeon RX 580 Red Dragon V2 but macOS (10.14.6) shows only 3840x2160 (see screenshot). Running Windows on the same system displays the correct resolution of 5120x2880.
Any special settings to make 5k working?

View attachment 437779

Thanks a lot
Please try this:
  • Run Terminal and type:
    /System/Library/Extensions/AppleGraphicsControl.kext/Contents/MacOS/AGDCDiagnose -a > ~/Documents/AGDCDiagnose.txt 2>&1
  • This will create a file called AGDCDiagnose.txt in your Documents folder.
  • Upload this file. It will contain low-level details.
 
Yes sir. Both monitors do. Actually one of my HDMI is going to a stereo for my home theater.
 

Attachments

  • Screen Shot 2019-11-27 at 11.15.43 AM.png
    Screen Shot 2019-11-27 at 11.15.43 AM.png
    48.3 KB · Views: 55
Yes sir. Both monitors do. Actually one of my HDMI is going to a stereo for my home theater.
The screenshot indicates that HDMI sound output to the Samsung is working. It may be necessary to use the monitor's on-board menu to raise the volume or enable the speakers.
 
Has anyone gotten NVRAM to work, without installing the RC scripts, on Catalina 10.15.1?
 
Yes. After tweaking a little bit, I finally get sound but no control over it. I guess to control such sound it all depends on output source like stereo, monitor, etc. I think am fully set now. I thank so kindly for your expertise and your input.
 
Thanks for the photo of the server build! I’ve not personally partitioned a disk in this manner, but you’re welcome to try. It would be strongly recommended to make a full bootable backup first (with the current single-partition configuration). If the experiment works, please share it with us! :)

There are upsides and downsides to splitting the home folder from the system folder:
  • Upsides:
    • Allows us to backup just the system folder onto relatively cheap 128GB or 256GB SSDs.
    • Total time for backup is also reduced, so it’s more convenient to make more frequent backups.
    • We can allocate a bigger SSD to our home folder. This is especially important if we’re saving large video files or managing large photo collections (especially RAW files).
  • Downsides:
    • Someone reported that some third party applications (perhaps some Adobe applications) may not work properly when the home folder is split from the system folder, although I have not independently verified this claim.
      • All of the apps I use have no problem with a split home folder.

Time Machine backups can and should be used alongside full backups. Reason:
  • If we make a full backup every week or two weeks, for example, then any in-between changes made to your data files will be lost.
  • But Time Machine backups up your files on a much more regularly basis and keeps track of all of the intermediate versions of a file. So you can retrieve any past version of a file.
  • Time Machine is therefore ideally suited for the home folder that contains your documents.

I have my home folder on a separate SSD and both Photoshop and Lightroom work fine, CC 2019 versions, haven't updated to 2020 yet.
 
Please try this:
  • Run Terminal and type:
    /System/Library/Extensions/AppleGraphicsControl.kext/Contents/MacOS/AGDCDiagnose -a > ~/Documents/AGDCDiagnose.txt 2>&1
  • This will create a file called AGDCDiagnose.txt in your Documents folder.
  • Upload this file. It will contain low-level details.


Thanks for you help! - see the file attached.
 

Attachments

  • AGDCDiagnose.txt
    47.5 KB · Views: 81
Thanks for you help! - see the file attached.
This shows that a desktop size of 3840x2160 pixels is being scaled to 5120x2880 (5K) over DisplayPort 1.4 with a 533.25 MHz pixel clock. So this looks normal, but the text on your monitor is probably fairly small because you've selected a "Scaling" option in System Preferences --> Displays that displays more text at the expense of that text being reduced in scale. Typically for a 27-inch monitor we'll set the effective desktop to 2560x1440 (which will scale to 5120x2880 for that clean "retina" look). This makes text more readable.

Can you post a screenshot of System Preferences --> Displays?

Screen Shot 2019-11-27 at 12.42.54 PM.png
 
This shows that a desktop size of 3840x2160 pixels is being scaled to 5120x2880 (5K) over DisplayPort 1.4 with a 533.25 MHz pixel clock. So this looks normal, but the text on your monitor is probably fairly small because you've selected a "Scaling" option in System Preferences --> Displays that displays more text at the expense of that text being reduced in scale. Typically for a 27-inch monitor we'll set the effective desktop to 2560x1440 (which will scale to 5120x2880 for that clean "retina" look). This makes text more readable.

Can you post a screenshot of System Preferences --> Displays?

View attachment 437853

Thanks again. See the attached screenshot. So it looks like the display is actually driven by 5120x2880 (5K)? I got a MacBook Pro attached to a LG Ultrafine 5K and the picture looks a lot sharper. The Scaling is the same, but it looks sharper so I though the display on my hackintosh is not 5120x2880 but something below (as the "About this Mac->Display shows 3840x2160) and the display is scaling it up ...

PL2779QQ 2019-11-27 19-20-51.jpg
 
Thanks again. See the attached screenshot. So it looks like the display is actually driven by 5120x2880 (5K)? I got a MacBook Pro attached to a LG Ultrafine 5K and the picture looks a lot sharper. The Scaling is the same, but it looks sharper so I though the display on my hackintosh is not 5120x2880 but something below (as the "About this Mac->Display shows 3840x2160) and the display is scaling it up ...

View attachment 437861
Try clicking “Scaled” and test the various options. Is there an option that makes everything look as sharp as the MacBook Pro connected to LG UltraFine 5K?
 
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