Setup & Software Discussions
Missing scaled resolution w/ Vega 64 TB3...
 

Missing scaled resolution w/ Vega 64 TB3 + LG 34wk95u-w  

  RSS

nix8
 nix8
(@nix8)
Active Member
Joined: 8 months ago
Posts: 6
Apr 15, 2019 6:04 pm  

Similar to this thread, I'm having an issue getting the proper resolution to work on my LG ultrawide and TB3 eGPU. Here are my specs:

2018 13" Macbook Pro w/ TouchBar
Sonnet Breakaway box 650
Radeon Vega 64 (MSI)
LG 34wk95u-w

The monitor works fine when plugged in via TB3 (internal intel graphics). By default, the display settings show the supported scaling options. I can select "More Space", which is the resolution I want. Alt-clicking the "Scaled" option reveals that the underlying resolution is 3360x1417. Screenshots of TB3 setup: https://imgur.com/a/eB2lU2R

When connecting the monitor through DisplayPort and my eGPU, however, 3360x1417 resolution disappears. The display settings don't even show scaling options; instead I just get a list of resolutions by default. If I alt-click "Scaled", the list expands to show all supported resolutions, but again, no 3360x1417. The closest it seems to support is 3440x1440, but that resolution causes objects on the screen to be extremely blurry. Screenshots of settings: https://imgur.com/a/H8dWUjn

Has anyone else had this issue? Is there a way to solve it?

This topic was modified 2 months ago

2018 13" Macbook Pro w/ TouchBar, Sonnet Breakaway box 650, Radeon Vega 64 (MSI), LG 34wk95u-w


ReplyQuote
Anchoricex
(@anchoricex)
Trusted Member
Joined: 2 years ago
Posts: 73
Apr 17, 2019 2:09 am  

Have you figured this out? Running this monitor, 2018 13" 2.7ghz quadcore Macbook Pro with 16gb ram, and a Vega 64 reference in an Akitio Node. 5k works over tb3 but is taxing on the integrated intel stuff, so I want to use my eGPU. Only getting these options: 

Screen Shot 2019 04 16 at 7.08.27 PM

wow i just realized you're getting 5k even in 30hz, im not even getting that. I'm using the supplied DisplayPort cable, you?

This post was modified 2 months ago

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


ReplyQuote
nix8
 nix8
(@nix8)
Active Member
Joined: 8 months ago
Posts: 6
Apr 17, 2019 10:05 pm  

Nope, no luck still. Any help would be appreciated.

Edit: I’m using an 8k DisplayPort cable from amazon, but I don’t think it’s much different from the stock one. 

This post was modified 2 months ago

2018 13" Macbook Pro w/ TouchBar, Sonnet Breakaway box 650, Radeon Vega 64 (MSI), LG 34wk95u-w


ReplyQuote
Anchoricex
(@anchoricex)
Trusted Member
Joined: 2 years ago
Posts: 73
Apr 17, 2019 10:57 pm  
Posted by: nix8

Nope, no luck still. Any help would be appreciated.

Edit: I’m using an 8k DisplayPort cable from amazon, but I don’t think it’s much different from the stock one. 

I literally just figured this out. Gonna do a write up here soon for ya.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


ReplyQuote
Anchoricex
(@anchoricex)
Trusted Member
Joined: 2 years ago
Posts: 73
Apr 18, 2019 12:43 am  

Disclaimer: I am not 100% sure what is going on here but this fixed my issue. I used the following resources:

* This post https://www.tonymacx86.com/threads/adding-using-hidpi-custom-resolutions.133254/page-77#post-1907311 where another user had similar issues with this monitor

* This tool https://comsysto.github.io/Display-Override-PropertyList-File-Parser-and-Generator-with-HiDPI-Support-For-Scaled-Resolutions/

System: 2018 13" Macbook Pro 2.7ghz QC, 16gb ram
eGPU: Akitio Node + Sapphire RX Vega 64
Monitor: LG 5k2k 34wk95u-W
Connectivity: Displayport 1.4 cable that came with my monitor directly to GPU
Issue: No "nice" resolutions available, only getting 3440x1440 but blurry
Solution: Create a .plist file using the web tool that includes this monitor info and the desired scaled resolutions (currently running 6720x2834 UI looks like 3360x1417 @ 60hz)

 

Step 1: Disable SIP

* On start up hold CMD + R until you get to the recovery screen

* At the top menu, go to Utilities -> Terminal

* Type: csutil disable

* Hit enter, should get a message saying it was disabled. Reboot.

 

Step 2: Go to this web tool and scroll down and follow the steps https://comsysto.github.io/Display-Override-PropertyList-File-Parser-and-Generator-with-HiDPI-Support-For-Scaled-Resolutions/

 

Since you’re using the same monitor, the code/plist file I ended up using is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>DisplayPixelDimensions</key>
    <data>
    AAAUAAAACHA=
    </data>
    <key>DisplayProductID</key>
    <integer>30496</integer>
    <key>DisplayProductName</key>
    <string>LG HDR 5K</string>
    <key>DisplayVendorID</key>
    <integer>7789</integer>
</dict>
</plist>

 

You can copy and paste it into the web tool prompt & then download the .plist file (Button that says 'Display ProductID ...'):

 

Then toss this in terminal (assuming you saved the file to ~/Downloads if not then change the first path to point to the file in this command):

 

sudo cp ~/Downloads/DisplayProductID-7720.plist /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-1e6d/DisplayProductID-7720

 

Reboot, then go to your display preferences and you should have more options for resolutions.

 

This did the trick for me. I don’t know what the f is going on here or what this does, but I now have the good resolutions and they’re not blurry. I’m a happy camper.

 

Just did a Unigen test for the hell of it. Was getting 50-60fps and then the GPU ate shit lol, the Akitio node power supply doesn’t cut it, these Vega cards are so inefficient power wise. Just ordered a Razer Core X Chroma (700W PSU).

Screen Shot 2019 04 17 at 4.14.41 PM

This post was modified 2 months ago

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


theitsage liked
ReplyQuote
nix8
 nix8
(@nix8)
Active Member
Joined: 8 months ago
Posts: 6
Apr 18, 2019 5:47 am  

Holy shit, that worked. Thanks so much!

So yeah, this is weird. Is this just a macOS issue with this monitor/resolution? It seems like this is something they could easily fix in a software release...

Edit: I ran the Heaven benchmark (my sonnet box is the 650w version). Here are the results for the extreme preset: https://imgur.com/a/uXHsJ73

This post was modified 2 months ago

2018 13" Macbook Pro w/ TouchBar, Sonnet Breakaway box 650, Radeon Vega 64 (MSI), LG 34wk95u-w


ReplyQuote
Anchoricex
(@anchoricex)
Trusted Member
Joined: 2 years ago
Posts: 73
Apr 18, 2019 6:44 pm  
Posted by: nix8

Holy shit, that worked. Thanks so much!

So yeah, this is weird. Is this just a macOS issue with this monitor/resolution? It seems like this is something they could easily fix in a software release...

Edit: I ran the Heaven benchmark (my sonnet box is the 650w version). Here are the results for the extreme preset: https://imgur.com/a/uXHsJ73

Hell yeah happy to hear it’s a working fix. I have my money on macOS being spotty at recognizing and identifying the monitor which is why we’re stuck with non-HiDPi stock resolutions without the fix. Probably going to submit a bug report when I get around to it. I think @theitsage mentioned he had or has this monitor and has run into similar issues, hope he checks this out. This monitor kicks ass.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


ReplyQuote