![]() ![]() Once in recovery mode, open a terminal window.Boot into the recovery partition by pressing CMD + R when starting up your Mac.If you are running OSX 10.11 or higher, SIP must be disabled. #Disabling System Integrity Protection (SIP) For more information, including download links, vist. SwitchResX is a utility that allows users to override the default resolution settings in OSX. The following list of monitors have been used with the 2020 Macbook Pro 13″ M1.#SwitchResX Settings for LG 21:9 UltraWide LG 34WN750 UltraWide 3440×1440 + StarTech TB3CDK2DPUE TB 3 dock + DP 1.4 cable #Switchresx 4k scaled to 1080p pro Monitor auto-powers off even when in use.Works at 60Hz at 3440×1440 resolution without needing to use switchResX or option-scaling. When this happens, switching back on does not cause the screen to be recognised, even if the DP cable is unplugged and repluged. Works with option-scaling to choose the correct scaling.No text scaling option in display preferences.Remembers monitor arrangement between reboots.Requires unplugging the TB3 cable to the dock, rebooting or powering off the dock. Due to the high DPI of 4K monitors, by default the text is too small to read.Needs switchResX to change resolution to 4k 60Hz. To fix, Apple allow you to set the scaling factor in the “displays” system preferences. However, this does not increase the font and icon size, like it does in windows, instead it downgrades the monitor resolution. The result is using monitor at less than its native resolution, which is a very poor solution. It means that if you use photoshop for example, you are using it at the lower resolution. The low resolution produces poorer quality images and text than native resolution with font scaling. There is little point in buying a 4K monitor for use with the M1. You will see better quality using a lower resolution monitor at its native resolution, without scaling. LG 32UN880-B 4K HDR direct USBC (with charging) The same monitor on widows is noticeably better, especially with photoshop and text. This monitor supports HDMI, DP or Mini DP. However, it does not work with M1 due to Apple incorrectly using YPbPr mode (analog) instead of RGB (digital). This results in blurred text and incorrect colours. This is an old MacOS “bug” which has existing for more than 5 years, however with intel based macs there was a workaround: to generate an EDID display profile file and edit it to remove the ypbpr mode. Apple have closed this workaround on the M1, s it is no longer possible to use Dell Ultrasharp monitors, which are in direct competition with Apples own displays costing significantly more. If anyone has the same issue, please file a report through Macs feedback Assistant with the monitor attached, quoting FB8946046 as a reference number which for this issue. Luckily, this 15 year old monitor has Dual Link DVI. DVI does not support YPBPR mode, so Apple can’t cripple the display. To connect to the Mac, I am using a BizLink Active Dual Link DVI to displayport adapter, then an active DP to TB3 adapter, which is then plugged into the Akner TB dock. yes, thats about £500 worth of adapters chained together to get the M1 to work with the dell.One thing you can try is to hold Alt while selecting Scaled in the Display pane of the Displays view in System Preferences. On my Mac, that increases the selection of resolutions (and the effect of that is sticky if I hold Alt and click again after reverting to Default for display, the list shrinks back to what it was initially, but clicking back and forth without Alt shows me the same list of resolutions each time). It's possible that won't help, if your monitor simply doesn't offer up intermediate resolutions, but that might not matter if it's the GPU that does the scaling rather than the monitor. I tend to prefer to choose a mode which uses the native resolution of the display, because it maximizes the crispness. ![]() It's possible your 1080P is actually 2160P, but described by System Preferences as Looks like 1920 x 1080 that uses four times as many pixels per character in the font selection, compared to a true 1080P. ![]() Depending on whether your monitor is treated as equivalent to a Retina display when connected to your Mac, what it's calling 1080P could be either (a true scaled 1080P, or just a better choice of fonts). If the applications you commonly use are sufficiently capable of changing font size, you can increase the font size (if you're using 2160P) or decrease the font size (if your 1080P is like a Retina 1080P). ![]()
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