Since it is a deliberate decision, it is unclear if Apple will revert the existence of an I2C controller for M1 Macs in the future. While older Macs with Intel chips had integrated graphics that featured an I2C graphics controller used to send DDC requests, the newer Macs with the M1 chip lack its support rendering apps like Lunar and MonitorControl useless. This set of protocols is supported by most third-party displays and monitors as they allow you to establish a connection between your Mac’s graphics card and the display itself, letting you change the brightness of the external display right from your Mac. However, when it comes to third-party displays, the developers of the aforementioned apps and other apps that offer similar controls use a collection of protocols called the DDC (Display Data Channel). Monitor Control starts on new M1 MacBooks, but the external monitor is not recognized. This same protocol is also present within LG displays that Apple sells. Control your external monitor brightness & volume on your Mac. In order to send commands like changing the brightness of a display, establishing a communication between the Mac and the display, Apple’s displays use their own protocol.
#Monitorcontrol mac m1 driver
“This is not a bug, it’s simply the fact that M1 shares a big part of its architecture with the iPad A14 chip and Apple developers borrowed part of the GPU driver code from the iPad kernel which doesn’t expose an I2C controller (which Lunar needs for DDC requests) and probably never will.” Developer Alin Panaitiu explains in a different thread that the shortcoming is not a bug and is deliberately added to M1 Macs: Using docks or daisy-chaining devices doesn't increase the number of displays you can connect.For some time now, users with an M1 Mac have been finding themselves unable to control the brightness of third-party displays (using third-party apps) that are not made specifically compatible with Macs.Ī developer of one of those apps-Lunar-said in a Github support thread of MonitorControl, a similar app, that M1 support is unlikely for apps that control brightness on external displays.On Mac mini, you can connect a second display to the HDMI port.On iMac, connect your display to either of the ports with the Thunderbolt symbol. On MacBook Air, 13-inch MacBook Pro, iMac, and Mac mini, you can connect one external display using either of the Thunderbolt / USB 4 ports.If you're using a Mac with the M1 or M2 chip: Reduced the Apple Font Smoothing to 1 (if I choose 0, the fonts are thinner and more fuzzy). If you're using a Mac with the M1 or M2 chip: On MacBook Air, 13-inch MacBook Pro, iMac, and Mac mini, you can connect one external display using either of the Thunderbolt / USB 4 ports. You can connect up to two external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports. YPbPr with USB-C only (2560x1440 60hz), or RGB with HDMI over the QGeeM Hub (2560x1440 60hz) Select native resolution for the monitor (2560x1440). If you're using a Mac with M1 Pro: You can connect up to two external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports.On Mac Studio, you can connect up to five external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports on the back of the computer.On MacBook Pro, you can connect up to four external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports.You can connect up to five external displays to your Mac using the Thunderbolt 4 (USB-C) and HDMI ports on the front and back of the computer.If you're using a Mac Studio with M1 Ultra: To find out which chip your Mac has, choose Apple menu > About This Mac. On Mac computers with Apple silicon, you can connect up to 5 displays depending on the chip in your Mac. beta releases of the newest version of MonitorControl works with the M1 Mac.
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