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If you have a MBP 16 inch, could you help me with a display test? Thanks!

H

haginile

macrumors regular
Original poster
Dec 13, 2006
106
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This is a follow-up to this post. I've come up with a very reliable way to reproduce a display issue on my machine. Could you help me test it and see whether you could reproduce it?

Steps:
  1. Turn ON Night Shift in the Display settings.
  2. Make sure your MBP is using the discrete GPU (launching Photos should do it).
  3. Download this html file and drag it into Safari (it's a simple html file showing two lines of text).
Do you see a green line under the small letters? If so, if you quit Photos so that the system uses Intel GPU, does the green line disappear? I've also attached a picture showing what I'm seeing.

Thanks so much!

Edit/Extra Notes: 1) I couldn't reproduce this issue at the Apple Store, but they were all running 10.15.1 while I'm on 10.15.2, so could be an issue introduced by the update. 2) Turning on True Tone also triggers the green lines. 3) When the MBP display is showing green lines, external displays look fine.

image.png
 
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You should try repeating the experiment with various scaling/resolution settings. I'd guess it's an issue with AMD's display scaler.
 
konqerror said:
You should try repeating the experiment with various scaling/resolution settings. I'd guess it's an issue with AMD's display scaler.
Click to expand...

Thanks! This appears to happen under "Default" and "More Space" resolutions. Other resolutions seem good.
 
haginile said:
Thanks! This appears to happen under "Default" and "More Space" resolutions. Other resolutions seem good.
Click to expand...

Yeah, I think that supports my hypothesis by being broken when you're downscaling but not at native or upscaling, and it sounds like there's an interaction with color correction.

Perhaps try setting a different color profile to see what happens? My bet is that it will make it full-time broken.
 
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konqerror said:
Yeah, I think that supports my hypothesis by being broken when you're downscaling but not at native or upscaling, and it sounds like there's an interaction with color correction.

Perhaps try setting a different color profile to see what happens?
Click to expand...

Thanks! I think you're right.
I tried other color profiles and the problem persists on them all...
 
The problem exists on all scaling settings (at least in my case) and was introduced with 10.15.2 update. I am sure about.

I work as a graphic designer and pay attention to such details on a daily basis. 10.15.1 was all fine.
I was running it for about 2-3 weeks on the Macbook Pro 16'.

Suddenly after the update - I've noticed this green tint in various places, especially in Adobe Illustrator - when this is very, very visible around thin lines.

I will try to make some pictures later on.

I know that 10.15.2 have some 'drivers' update for the GPU. Right after the update and restarting the Macbook, on my first launch of Adobe software, I had some dialog box alert - saying something about a new GPU system drivers, which are not recognized or compatible or something. I just clicked OK and continued to run the software (didn't pay much attention then), however now - when I think about it - this might be an important note.
 
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Marcin Kaczmarek said:
The problem exists on all scaling settings (at least in my case) and was introduced with 10.15.2 update. I am sure about.

I work as a graphic designer and pay attention to such details on a daily basis. 10.15.1 was all fine.
I was running it for about 2-3 weeks on the Macbook Pro 16'.

Suddenly after the update - I've noticed this green tint in various places, especially in Adobe Illustrator - when this is very, very visible around thin lines.

I will try to make some pictures later on.

I know that 10.15.2 have some 'drivers' update for the GPU. Right after the update and restarting the Macbook, on my first launch of Adobe software, I had some dialog box alert - saying something about a new GPU system drivers, which are not recognized or compatible or something. I just clicked OK and continued to run the software (didn't pay much attention then), however now - when I think about it - this might be an important note.
Click to expand...

Thanks! I also filed a bug report for Catalina.
 
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Yep, seeing the same thing here after 10.15.2.

Where did you file a bug report?
 
I am facing similar issue while scaling my resolution above 2048x1280 using screeners or easyres. This is extremely frustrating. My older MacBook Pro 15inch late 2013 didn't have this issue. I have taken some photos to visualise the problem. It is very visible while browsing fonts in Adobe Photoshop but in fact every text and objects are affected. Seems like this isn't my MacBook Pro 16 only (thanks) as I don't want to return it as its super powerful but for machine that did cost me £3600 this certainly shouldn't happen.
Please post your solutions if you have found workaround. Thanks


IMG_5776.JPG
2813FE26-BE56-4422-9973-33BDF86848D1.jpeg
A3B5E333-70C3-49CE-9917-16E13BAFFE7E.png
So I have machine.
 
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medialook said:
I am facing similar issue while scaling my resolution above 2048x1280 using screeners or easyres. This is extremely frustrating. My older MacBook Pro 15inch late 2013 didn't have this issue. I have taken some photos to visualise the problem. It is very visible while browsing fonts in Adobe Photoshop but in fact every text and objects are affected. Seems like this isn't my MacBook Pro 16 only (thanks) as I don't want to return it as its super powerful but for machine that did cost me £3600 this certainly shouldn't happen.
Please post your solutions if you have found workaround. Thanks


View attachment 883334View attachment 883333View attachment 883336So I have machine.
Click to expand...

Fix will be to report the problem to Apple and let them work with with AMD to fix the drivers and/or scaling library.
 
jerryk said:
Fix will be to report the problem to Apple and let them work with with AMD to fix the drivers and/or scaling library.
Click to expand...
I've already have and also tired to resolve it with Apple support. Luckily during my troubleshoot steps I have found sweet spot resolution for huge real estate which is 3072x1920 this works without green tint.
 
Actually I noticed differences in scaling between the AMD and Intel GPUs on my 2016 15" Pro too - I always noticed the downscaling was very slightly fuzzier on the AMD GPU. This particular artifact may be new to the 16", but there were always minor differences.
 
The thing is - this wasn't there in .1, it showed up in the .2 Catalina release. Definitely a regression.
 
I just noticed this on my brand new 16” that came with 10.15.2, except I didn’t think I was using the dGPU. I’ll do some more testing later today.

Hopefully it is just a driver issue as has been suggested here and in the other thread. I’ll certainly file a report.
 
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simonmet said:
I just noticed this on my brand new 16” that came with 10.15.2, except I don’t think I was using the dGPU. I’ll do some more testing later today.

Hopefully it is just a driver issue as has been suggested here and in the other thread. I’ll certainly file a report.
Click to expand...

10.15.3 fixes the bug.

EDIT: No it doesn't.
 
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Just checked again and I can confirm on my machine the issue is absent or not noticeable with iGPU but appears with dGPU (I must have got it wrong earlier). So that's at least consistent with other reports and indicates a driver issue.

I'll update to 10.15.3 to see if that helps, but it sounds like it's not fixed yet.

Edit: no change in 10.15.3 for me either.
 
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