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Donza

macrumors regular
Nov 14, 2006
201
97
Finland
By the way, do you use 3008x1692 scaling on your 32" 4k monitor? Do you think fonts are still Retina-like or do they get more blocky and weird looking as they do running native resolution without HiDPI scaling?
I'm getting tired with how fonts look with 2560x1440 monitor at native resolution and getting 4K monitor where I can at least get good fonts at 2560x1440 and preferably even 3008x1692? I'm considering 27" in case that it usable at 3008x1692 too.

Does 3008x1692 scaling work with 8GB M1 Mini or do you need more ram? I'd imagine scaling uses quite a bit RAM?
How much scaling (other that 1x or 2x) causes performance loss? I saw some mentions about UI getting more laggy but not sure is that was only OS issue.
My experience has been basically same as what @xraydoc described. I have 32" Dell display and my Mac mini has 16GB of RAM. Never seen any issues with font rendering at 3008x1692.

I use 3008x1692 on my 32" 4K monitor virtually full-time. I think it looks fantastic. Fonts are crystal clear without any of the blockiness one sees on a native 1440p monitor. Even tiny 5 and 6 point fonts are sharp as can be. I highly recommend the "looks like 3008x1692" HiDPI mode on a 32" 4K. Even upgraded my main monitor at the office to duplicate what I've got at home.

Zero performance hit on my fanless MacBook Air and absolutely no detectable increase in heat production.

The non-2x scaling was an issue for Intel processors but I've seen no evidence that it causes any performance hit on the M1 machines. Besides, 2560x1400 HiDPI is also a fractional non-2X mode. Only 1920x1080 is an even 2x on a 4K monitor, and I don't think most people are going to enjoy using "looks like 1920x1080" on a 32" display (outside those with vision issues).

I do have 16GB of RAM, but I've not read any reports that people with 8GB machines are having performance issues.
 

0906742

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Apr 11, 2018
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Personally it's fine but I prefer 1440p. Ideally I would use something in between both haha
Yeah, I gotta see myself when I get my new 27" display but based on my calculations some resolution between both probably would be the best for me too. I currently have 25" 2560x1440 panel running at full native resolution, so 27" panel at the same resolution result larger fonts but 3008x1692 smaller...
Currently I find font size just perfect for me, so maybe I can tolerate a bit smaller too, not sure yet.
 
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ionblue

macrumors newbie
Jul 23, 2021
3
1
Hey folks. I happened on this post trying to figure out why my monitor and/or M1 Mini would not sleep. Doubt this issue has anything at all to do with the YPbPr, but it got me looking since I recently replaced my MBP with a M1 Mini. My Dell P2715Q (connected to TB3 dock via DP cable) was indeed stuck in YPbPr mode and if I tried to change it in the OSD the screen went all crazy purple.

On a whim, I looked at the settings in the OSD for MST (under display) and it was set to OFF. I recalled having another issue a while back and I had to set this to Secondary. Can't remember what the heck that was, but it obviously selected either. So I changed it to Primary and as soon as I selected it the display changed and it's no longer in YPbPr mode. The colors on screen did shift slightly as well. I'll have to recalibrate the thing to make sure it's all good.

To be sure this stuck I rebooted and checked the OSD. Still holding on RGB.

Anyone out there care to try this as well? Hoping it helps this issue. Now I need to get back to figuring out the sleep issue. :)
 
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HumanSquid

macrumors newbie
Sep 27, 2016
10
2
Hey folks. I happened on this post trying to figure out why my monitor and/or M1 Mini would not sleep. Doubt this issue has anything at all to do with the YPbPr, but it got me looking since I recently replaced my MBP with a M1 Mini. My Dell P2715Q (connected to TB3 dock via DP cable) was indeed stuck in YPbPr mode and if I tried to change it in the OSD the screen went all crazy purple.

On a whim, I looked at the settings in the OSD for MST (under display) and it was set to OFF. I recalled having another issue a while back and I had to set this to Secondary. Can't remember what the heck that was, but it obviously selected either. So I changed it to Primary and as soon as I selected it the display changed and it's no longer in YPbPr mode. The colors on screen did shift slightly as well. I'll have to recalibrate the thing to make sure it's all good.

To be sure this stuck I rebooted and checked the OSD. Still holding on RGB.

Anyone out there care to try this as well? Hoping it helps this issue. Now I need to get back to figuring out the sleep issue. :)
Good info. On Dell PQ2721P I have the YPbPr/RGB mode setting in mine but nothing for MST otherwise I would try it. Yea mine turns purple/green if I switch to RGB
 

ionblue

macrumors newbie
Jul 23, 2021
3
1
Good info. On Dell PQ2721P I have the YPbPr/RGB mode setting in mine but nothing for MST otherwise I would try it. Yea mine turns purple/green if I switch to RGB
For me, MST is under the display settings. Weird I have it and you don't. Another mystery.
 

0906742

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Apr 11, 2018
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Easier to use plist trick. You cannot change this from monitor menu (it will only result odd colors since Mac is still sending yPbPr).
 
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ionblue

macrumors newbie
Jul 23, 2021
3
1
Easier to use plist trick. You cannot change this from monitor menu (it will only result odd colors since Mac is still sending yPbPr).
I tried the above script and even after rotating my monitor several times I still get an error at the end that LinkDescription isn't found and to rotate again. Changing the MST setting to anything when it's in the wrong mode puts it into RGB mode, but if I change MST again it reverts back to yPbPr. weird.
 

0906742

Cancelled
Apr 11, 2018
2,313
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Forget about scripts and do it manually.

Just read this thread previous page and see my post of example what you need to edit in plist file. Also you find links to other people's videos about what commands and how to use them for editing plist files. It is really just couples simple commands you type in command prompt. But as always it is wise to make good backup of your system just in case but for what I have tested myself I did not have any problems and those plist files seem to recreate by themselves if you delete them and then reboot and go to display settings and change some settings like resolution or rotation once, so this should put them back to OS defaults too (but again it is always wise to make backup of system and those files).
 
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elzenx

macrumors newbie
Jul 24, 2021
2
3
Hello,

For anyone still having problems with the ypbpr vs rgb probem.
I managed to get it stay on RGB. I tested restarting the computer, shutting down and opening again, disconnecting the usb-c cable that connects the computer to the monitor and connecting again, then waking from sleep. All worked.

I'm on 12.0 Beta (21A5284e). Display is a 4k Dell P2721Q connected with a USB-C to USB-C cable to a M1 Macbook Air baseline.

Search for DDC/CI option in the OSD of your monitor and turn it off. Let me know if that works for any of you!

Thanks!

P.S. If you want to replicate close to my own situation, before doing the procedure with the OSD I opened the lid of my Macbook and from Display Settings I changed to Mirror on the settings for my external display. Then I switched the color to P3 and back to the display's default color profile, and after that I did the OSD thing.
 

0906742

Cancelled
Apr 11, 2018
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Unless 12.0 beta fixes not staying in RGB mode by nature, I don't think procedures like you described are permanent solution to this.
It used to be the same case with 11.x and sometimes doing something seemed to put it to RGB mode but it eventually went to YPbPr. The only thing that made staying RGB mode for me permanently with my M1 Mini was doing plist trick (which I find much more easy than pulling cables and doing all kinds of "rain dance" tricks trying to put it to RGB :)).
 
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elzenx

macrumors newbie
Jul 24, 2021
2
3
Unless 12.0 beta fixes not staying in RGB mode by nature, I don't think procedures like you described are permanent solution to this.
It used to be the same case with 11.x and sometimes doing something seemed to put it to RGB mode but it eventually went to YPbPr. The only thing that made staying RGB mode for me permanently with my M1 Mini was doing plist trick (which I find much more easy than pulling cables and doing all kinds of "rain dance" tricks trying to put it to RGB :)).
I think it was obvious my potential solution isn't meant as a "permanent solution". But I think it's better to try to solve the problem now if one can, than wait for Apple to fix it. I will watch and see the following days if it goes back to YPbPr. But so far, it's staying on RGB. Are you referring to the plist trick from Vladimir Kochkovski video on YT? If so it didn't work permanently for me. My potential solution might be just linked to the DDC/CI option in the OSD of the monitor. That's why people who are still having trouble with this issue, that tried other potential solutions and didn't succeed, maybe they will have luck with this. It's just flipping a switch in the menu of the monitor so really more easy than modifying plist files. Don't get discouraged people try this and see if it works! :)
 

0906742

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Apr 11, 2018
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Are you referring to the plist trick from Vladimir Kochkovski video on YT? If so it didn't work permanently for me.
It works if you don't change settings in MacOS display menu after that. It is that plist gets reset to defaults in some display menu changes, so probably any tricks will cause it to change eventually. Anyway I find it easier to type few characters in text file and do conversion between xml and binary than pulling cables and changing monitor settings in monitor. :)
 

0906742

Cancelled
Apr 11, 2018
2,313
613
Apple have definitely changed the font rendering in 12.0, just upgraded to the beta and its pin sharp on my 4K screen.
Interesting. Would that also give good fonts for QHD monitor at native resolution finally?
 

0906742

Cancelled
Apr 11, 2018
2,313
613
I also just got 32" 4K monitor and I'm running it at 3008x1692 and fonts already look so much better than in QHD monitor in Big Sur. So if they improve even from this, I'm happy. Just wondering if they finally give QHD monitor user good fonts in Monterey. Those QHD monitors running at native resolution still have some benefits and probably if there was no issue with font look I would have kept it. These 4K monitors have their own issues.
 

indiekiduk

macrumors 6502
Jul 26, 2005
478
408
Glasgow, Scotland
Besides black on white text having a shimmer causing eye strain over time, a faster way to see the problem is in the Stocks app in the price list where the white text on red looks terrible. Another place is the top 2 corners of the Calendar app icon in the dock. Also the Mail white text on red in the Mail badge is bad too.
 
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