- Jan 26, 2018
- ASRock X299 Professional Gaming XE
- Mobile Phone
Yes, you can do that, but HiDPI on any screen other than 5120x2880 will look **** and blurry.
2560x1440 HiDPI looks best on a 5120x2880 display, but it still looks better than 2560x1440 Non-HiDPI on a 3840x2160 display.Yes, you can do that, but HiDPI on any screen other than 5120x2880 will look **** and blurry.
Did you end up figuring this out? I recently purchased this monitor too and haven't had much luck running it in 'looks like 2560x1440' scaled mode at 120Hz as it's stuck on 60Hz, despite the fact that native retina mode ('looks like 1920x1080') and native res (3840x2160) both work at 120Hz.I have an Acer XV273K (4K / 120hz), and am able to select 3840x2160@120hz and 1920x1080@120hz HiDPI and everything works correctly. However, for the other intermediate scaling options like "Looks like 2560x1440", I can only select 60hz refresh rate.
I've tried creating custom resolutions in SwitchResX but I can't create anything that's not a 2x resolution. I've seen the guides for DisplayOverrides but they always mention creating 2x resolutions too... not something in between like I'm trying to use here. Any tips?
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Lets see if I can figure this out:Did you end up figuring this out? I recently purchased this monitor too and haven't had much luck running it in 'looks like 2560x1440' scaled mode at 120Hz as it's stuck on 60Hz, despite the fact that native retina mode ('looks like 1920x1080') and native res (3840x2160) both work at 120Hz.
grep -R DisplayPixelDimensions /System/Library/Extensions /Library/Extensions /System/Library/Frameworks strings /System/Library/Frameworks/CoreDisplay.framework/CoreDisplay
defaults write com.apple.CoreDisplay multiRefreshRateScaledModes -bool true defaults write com.apple.CoreDisplay appleMultiRefreshRateScaledModes -bool true
sudo cp ~/Library/Preferences/com.apple.CoreDisplay.plist /Library/Preferences
The correct command is:How do you use the defaults command to modify /Library/Preferences instead of ~/Library/Preferences or /private/var/root/Library/Preferences?
sudo defaults write /Library/Preferences/com.apple.CoreDisplay multiRefreshRateScaledModes -bool true
Can you show current resolutions and EDID?I think I'm closer to than I was before. Strangely though, 2560x1440 scaled mode is now the only option missing in the list.
Here's some screenshots. There's several in there so just flick through them when you get a chance.
Sure, here's the EDID.Can you show current resolutions and EDID?
That's what's weird. Every other resolution combination is there except 2560x1440 HiDPI. For 2560x1440 there's only the low-res option.It says 5120x2880 is active so it should be an option. Then there should also be a 2560x1440 HiDPI option.
I can get the full list of resolutions to show up if I hold Alt/Option and click Scaled.I wonder why your System Preferences / Display screenshot doesn't have a "Show low resolution modes" option. Did you hold the Option key and click "Scaled"?
10.14.6[/QUOTE]What version of macOS are you running?