This workaround is applicable until Displaycal auto downloads Argyll 2.2.
Reboot Displaycal and you should see your monitor being recognized, yay. Repeat this a few times until all the files Displa圜al need is not showing the "unknown dev" popup anymore. So everytime the "warning: Can't open up file because the developer is unknown" popup shows up, you need to go to that bin folder and do a CTRL+ Right click to force run the file. Navigate to the Library>Download folder where your unzipped ArgyllCMS folder is located (from step 4), and select the "bin" folderĭisplaycal will automatically try to run a bunch of files in that bin folder, and the MacOS will try to stop you because the files came from an unidentified developer. Click on "File" up top, click "Locate ArgyllCMS Executables", it should open a bin folder with a bunch of files in it.
Go to and click on "Intel OS X 10.6 64 bit or later", it will download a tgz zip file, unzip it and make note of its location, we will need to move it later.
The first step prepares the monitor for the rest of the process. To do this, a calibration program (aka profiling program) takes you through a number of steps. It's downloading v2.1.2), click ok and let it Calibrating your monitor is to ensure that the colors that you eventually see on your screen are the same as the original colors of for instance a photo. It will prompt me to download the latest Argyll (which is a lie. Open up the display cal app, and plug in your calibration tool, in my case Spyder4 Here are the approximate instructions to get it working: Found out that the new version ofArgyllCMS v2.2.0 actually works with M1 Mac and allows detection of external monitors today thanks to the user rstolpe on the displaycal forums.
A common Displa圜AL issue is that on M1 Macs, the software cannot detect any external monitors connected.