Go to the Custom Resolutions tab on the right. Open SwitchResX, and click on the target monitor. For example, your target resolution is 1280x720 (720p), you want to make sure that there is custom resolution which is 2560x1440. Step 2: Create A Custom ResolutionĪfter SwitchResX is installed, you want to make sure that we have a custom resolution which is 2 times wider and taller than your target resolution. In this article, we are going to show you how to set up a 16:9 resolution, e.g., 1280x720 (720p), on a mac 16:10 screen with HiDPI support. Forcefully setting the mac screen to a 16:9 resolution will make the text blurry, because it is missing the HiDPI support. If you’d like to record a 16:9 video on it, it’s going to look weird. KScaleInstallMirrorDeps = 0x00000008 // install resolution on mirror dependents of this displayPost the override file created by SwitchResX.Today, all of the mac laptops comes with a 16:10 screen. The HiDPI modes are listed in SwitchResX but when you select them, they give a black screen? Post a screenshot of the current resolutions list. MacOS has a minimum height and width for scaled resolutions (I think minimum height used to be 600 but now it's 500? check various non HiDPI resolutions) so it won't accept HiDPI modes that have a height less than 1000. Seems like it might be a bug with Apple's drivers. Your display has a blank custom display name. You should enter something or unselect the "Use custom display name". You only show the 100 Hz version of the scaled modes. There should be corresponding HiDPI modes for 50 Hz and 60 Hz (for example, 2580 x 1080 HiDPI 50Hz, 60Hz, 100Hz).ĭid the 1720 x 720 HiDPI mode also not work?įor the 2580 x 1080 HiDPI mode, what if you create a different ratio by adding 8 pixels to the vertical only, will the HiDPI mode work? Keep repeatedly adding 8 pixels to the vertical until it does work. Then repeat the test starting at 2160 and subtracting 8 pixels until it works. Printf '\t\t'$(echo $theline | xxd -p -r | base64)'\n' I want to know how different from 21.5:9 the aspect ratio needs to be before it can work. Printf '\t\n'It adds the correct aspect resolution (21.5:9) and the same resolution with 2 vertical. The first 32 bit number after the vertical value is the scale flags according to SwitchResX - it has kScaleInstallAlways set. The next 32 bit number is a set of display mode flags to be set. SwitchResX sets the kDisplayModeValidForMirroringFlag. You might want to add the kDisplayModeValidForHiResFlag (it's a flag that is included in some of Apple's provided override files) - in that case, change 00200000 to 00a00000. It's possible to add another 32 bit number which is a set of display mode flags to be cleared. Trying to get 3840x2160 scaled to 1920x1080 HiDPI running at 60HZ on my OEM MBP (2016) a1707 running macOS 10.15.4 (Build 19E287) in clamshell mode on a Sony XBR-85X850D 85" 4k TV. Machine: MacBook Pro 2016 // i7-6920HQ 2.9 GHz Quad I'd be so thankful if someone could point me in the right direction. Graphics: Intel HD Graphics 530 1536 MB // Radeon Pro 455 2 GBĭisplay: Sony XBR-85X850D 4k UHD (3840x2160 // No Display Port - only HDMI 2.0)Ĭurrent Connection: Belkin F4U098BT mini TB3 dock to HDMI Premium High Speed cableĪttaching SwitchResX EDID AGDCDiagnose Dump Relevant screen caps below. Trying to get 3840x2160 scaled to 1920x1080 HiDPI running at 60HZ on my OEM MBP (2016) a1707 running macOS 10.15.4 (Build 19E287) in clamshell mode on a Sony XBR-85X850D 85" 4k TV, I know this is possible because I've accomplished doing it with a 2018 Mac Mini via HDMI 2. I'm working on a fresh install and have enabled HiDPI via terminal but can't get my machine to activate 1920x1080 HiDPI at all. I've tried SwitchResX, RDM, EasyRes, QuickRes, the tutorial, the pixel clock patch, the RGB patch, multiple Thunderbolt/USBC to HDMI hubs (all on previous installs) but I can't figure it out. I'd be so thankful if someone could point me in the right direction.Ĭurrent Connection: Belkin F4U098BT mini TB3 dock to HDMI High Speed cableOn OS X the Packed Pixels display won't automatically show up as "Retina" or "HiDPI" resolution, instead the OS will use the full resolution of the display making everything tiny. This can be changed using the 3rd party app (non-free) SwitchResX. You can play with the resolutions for the Packed Pixels which is probably listed as Color LCD (2). However not all of the HiDPI resolutions work due to an OS X bug.
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