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Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794694837)
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Home › Forums › Apple Silicon, Terminal & Developer Tools › Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794694837) › Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794694837)
Rachel KimWindowServer spikes on wake are a symptom, not the cause—the panic backtrace IOPlatformPluginFamily::getPlatform() -> AppleThunderboltNHI::interruptOccurred() indicates the display driver (AppleMuxControl/AGDC) is blocked waiting for the NHI to signal link training completion on the DisplayPort MST hub. Strip all login items (osascript -e 'tell application "System Events" to get the name of every login item') and disable WindowServer hardware acceleration for Safari (defaults write com.apple.Safari WebKitEnableGPUAcceleration -bool false) to reduce the GPU reset pressure during the critical 2-second wake window. If the panic ceases, the dock’s MST hub firmware is violating the kIOFBConnectFlags handshake; a Thunderbolt 4 certified cable (active 0.8m/40Gbps) often resolves the signal integrity failure triggering the NHI watchdog.