Screen Mirroring / AirPlay connects to projector (EShare / iMirror) but only displays a black screen after macOS 27 / iPadOS 27 update.
Hello Everyone. Prior to updating to macOS 27 and iPadOS 27, wireless Screen Mirroring worked without issues. Since the update, whenever I initiate Screen Mirroring to my projector from either my Mac or iPad:
- The device appears normally in Control Center / Displays settings (EShare-xxxx).
- The connection succeeds (the Mac recognizes it as a secondary/mirrored display, and the projector status shows as connected).
- However, no desktop or video feed is displayed on the projector. It remains completely black.
Troubleshooting Steps Already Taken:
- Wired Connection: Tested mirroring using a USB-C to HDMI cable, and the picture displays immediately and works normally. The black screen only occurs over Wi-Fi / AirPlay.
- Network Settings: Disabled iCloud Private Relay and disabled Private Wi-Fi Address on both devices; both are confirmed on the same local subnet (10.138.4.xxx).
- macOS Display Settings: Adjusted external display resolution (tested 1080p, 720p at 60Hz) and toggled between "Mirror Built-in Display" and "Separate Display".
- Dedicated EShare App: Attempted connecting via the official EShare client for Mac (Version 7.7.0722), but it fails to push video frames.
Has anyone encountered this AirPlay stream decoding failure on third-party receivers following the OS 27 update, or is there a specific AirPlay codec/extension setting on macOS 27 that needs to be configured?
Additional information:
Device & OS Details:
- Mac Model: MacBook Air M2 13 inch
- Mac OS Version: macOS 27.0 (Build: 26A428)
- iPad: Updated to iPadOS 27
- Receiver: Smart Projector running EShare / iMirror receiver (EShare-xxxx)