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AVAudioEngine failing with -10877 on macOS 26 beta, no devices detected via AVFoundation but HAL works
I’m developing a macOS audio monitoring app using AVAudioEngine, and I’ve run into a critical issue on macOS 26 beta where AVFoundation fails to detect any input devices, and AVAudioEngine.start() throws the familiar error 10877. FB#: FB19024508 Strange Behavior: AVAudioEngine.inputNode shows no channels or input format on bus 0. AVAudioEngine.start() fails with -10877 (AudioUnit connection error). AVCaptureDevice.DiscoverySession returns zero audio devices. Microphone permission is granted (authorized), and the app is properly signed and sandboxed with com.apple.security.device.audio-input. However, CoreAudio HAL does detect all input/output devices: Using AudioObjectGetPropertyDataSize and AudioObjectGetPropertyData with kAudioHardwarePropertyDevices, I can enumerate 14+ devices, including AirPods, USB DACs, and BlackHole. This suggests the lower-level audio stack is functional. I have tried: Resetting CoreAudio with sudo killall coreaudiod Rebuilding and re-signing the app Clearing TCC with tccutil reset Microphone Running on Apple Silicon and testing Rosetta/native detection via sysctl.proc_translated Using a fallback mechanism that logs device info from HAL and rotates logs for submission via Feedback Assistant I have submitted logs and a reproducible test case via Feedback Assitant : FB#: FB19024508]
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0
219
Jul ’25
Xcode 14.1 delete key creates single quotes
I'm having a problem with Mac Ventura 13 using Xcode 14.1 Delete key issue. When I press delete a pair of single quotes is created. Xcode shows a coding error with the option to fix the problem. Sometimes several sets of double single quotes are created after pressing the Delete key. The error message fix option has been the best way to delete single quotes. I've tried reinstalling Xcode but the issue persists. Any suggestions?
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768
Oct ’22
Simulator version12.3 showing errors
When I run the app in the Simulator 12.3, I get the following errors but Xcode 12.3 is not showing any problems with the code. I get the same errors with any selected device. Is this a Simulator bug, an issue with Xcode or SwiftUI issue, etc?     "<NSLayoutConstraint:0x600002fe1f40 'BIBTrailingCBLeading' H:[UIModernBarButton:0x15b627e90]-(6)-[UIModernBarButton:0x15b626920'Recent Data']   (active)>",     "<NSLayoutConstraint:0x600002fe1f90 'CBTrailingTrailing' UIModernBarButton:0x15b626920'Recent Data'.trailing <= UIButtonBarButton:0x15b625f50.trailing   (active)>",     "<NSLayoutConstraint:0x600002fe2da0 'UINavstaticbuttonhorizposition' UIModernBarButton:0x15b627e90.leading == UILayoutGuide:0x60000359e920'UIViewLayoutMarginsGuide'.leading   (active)>",     "<NSLayoutConstraint:0x600002fe2df0 'UINavItemContentGuide-leading' H:[UIButtonBarButton:0x15b625f50]-(0)-[UILayoutGuide:0x60000359e840'UINavigationBarItemContentLayoutGuide']   (active)>",     "<NSLayoutConstraint:0x600002fe5db0 'UINavItemContentGuide-trailing' UILayoutGuide:0x60000359e840'UINavigationBarItemContentLayoutGuide'.trailing == UINavigationBarContentView:0x15b61b5d0.trailing   (active)>",     "<NSLayoutConstraint:0x600002fe3570 'UIView-Encapsulated-Layout-Width' UINavigationBarContentView:0x15b61b5d0.width == 0   (active)>",     "<NSLayoutConstraint:0x600002fe6170 'UIView-leftMargin-guide-constraint' H:|-(0)-[UILayoutGuide:0x60000359e920'UIViewLayoutMarginsGuide']  (active, names: '|':UINavigationBarContentView:0x15b61b5d0 )>"
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815
Dec ’20