Following the newest macOS Monterey 12.3 replace, customers are reporting a number of issues when utilizing exterior displays, starting from Macs not detecting shows in any respect to inaccurate display output, in line with posts on the Apple Help and MacRumors boards.
Within the ten days for the reason that replace turned out there to the general public, customers have already reported points with the replace bricking Macs which have had logic board replacements and issues with utilizing sport controllers. Including to the record of points, customers at the moment are reporting that the replace is inflicting issues with exterior displays.
In line with customers on the Apple Help and MacRumors boards, some exterior shows related over USB-C are now not detected by Macs after updating to the newest macOS replace. As one consumer on Apple Help studies:
After updating my Mac mini immediately to 12.3, my monitor now now not shows a picture through USB-C, simply retains saying on no sign on the monitor.
I’ve tried HDMI and similar concern. The odd event it is going to show an image however as soon as I shutdown or restart the mac mini it doesn’t show an image. The mac is booting up. I’ve needed to resort to connecting it to my previous TV with HDMI connection.
That is so irritating.
Different customers have shared comparable experiences. Whereas many additionally report points with USB-C shows, others additionally say that HDMI connections to the Mac will not be being acknowledged. Some customers have been in a position to crowdsource potential workarounds within the meantime. In line with one consumer on the MacRumors Boards, the problem stems from macOS not recognizing a DisplayPort protocol model, which meant they needed to change the model to an earlier one with poorer high quality output.
I’ve solved this drawback (on 2022-03-15). On my monitor (LG LCD 27 27UN880-B IPS) I’ve went into settings, and I’ve lowered the DisplayPortVersion from the default v1.4 to v1.2. As quickly as I’ve lowered the monitor’s DisplayPortVersion, my Mac with OS X 12.3 has began recognizing the second show appropriately. Plainly the brand new OS X replace has points with a DisplayPortVersion 1.4 protocol (has sooner information charge, sooner refresh, and stream compression). Hope this helps.
One other short-term repair floated on each the Apple Help and MacRumors boards is to unplug the exterior show for a short while, plug it again into the Mac, after which plug the show again into an influence outlet, after which it ought to work. Some customers have additionally reported issues when utilizing two exterior displays with their Mac.
The difficulty of just one exterior show being acknowledged when two are related to a Mac appears to have been current all through the beta testing interval for macOS 12.3. Even after launch, nonetheless, the problem stays. As one consumer on the Apple Help boards relates:
2018 Mac Guide Professional 15″ and I’ve 2 exterior displays (similar viewsonic mannequin), have been utilizing nice for slightly below 2 years. After updating to 12.3, one is acknowledged and one just isn’t and I’ve no clue why. I’ve swapped cables, related different units, together with a iPad Professional (all nice) I’ve tried all 4 ports on the machine no distinction. The Mac e book flashes when the unrecognized monitor is plugged in, however by no means shows a picture. the monitor appears to assume it is related (I do not get the no sign warning) nothing…. 8* the monitor is powered and the display it vibrant (bleed from the backlight). The opposite monitor (similar actual mannequin) connects and works nice.
The net studies recommend that these points will not be arising when utilizing Apple’s new Studio Show, however as a substitute with third-party displays, similar to these provided by BenQ and LG.
macOS 12.3 is Monterey’s largest point-update since launch, bringing with it Common Management together with a number of different new characteristic additions. MacRumors earlier this week reached out to Apple for touch upon the problems customers are experiencing up to now with the newest macOS replace. We’ll replace this put up if we obtain a response.