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+---
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+tags: [macOS, troubleshooting, audio, music]
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+created: 2026-06-21
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+---
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+
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+# macOS coreaudiod 死锁修复
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+
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+## 现象
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+
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+- [[Mac常用软件|Music.app（音乐）]] 无法打开
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+- 点击图标后应用长时间无响应，窗口不显示
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+- 其他需要音频的应用（Safari 播放音视频等）也可能受影响
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+
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+## 根因
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+
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+**`coreaudiod`（Core Audio 守护进程）内部线程循环死锁。**
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+
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+macOS 26.5.1 上，`coreaudiod` 的音频处理线程之间出现循环等待：
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+
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+```
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+coreaudiod thread A → waiting for thread B → waiting for thread A（deadlock）
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+```
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+
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+任何需要音频的应用启动时都会卡在音频初始化，导致永久挂起。
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+
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+## 诊断方法
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+
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+### 1. 检查 hang 报告
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+
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+```bash
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+ls -lt /Library/Logs/DiagnosticReports/ | grep -i music
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+```
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+
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+hang 报告文件名示例：`Music_2026-06-21-133137_ShenLiangdeMacBook-Air.hang`
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+
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+### 2. 查看 hang 详情
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+
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+```bash
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+# 检查死锁信息
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+head -100 /Library/Logs/DiagnosticReports/Music_*.hang | strings | grep -i deadlock
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+```
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+
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+关键输出：`Deadlock: coreaudiod [...] -> coreaudiod [...] -> coreaudiod [...]`
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+
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+### 3. 确认 coreaudiod 状态
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+
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+```bash
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+pgrep -l coreaudiod # 查看 PID
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+ps aux | grep coreaudiod
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+```
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+
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+## 修复方法
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+
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+### 方法一：GUI 授权重启（推荐）
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+
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+```bash
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+osascript -e 'do shell script "killall coreaudiod" with administrator privileges'
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+```
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+
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+会弹出系统密码授权对话框，输入密码后 coreaudiod 被终止，launchd 自动重启。
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+
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+### 方法二：命令行 sudo
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+
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+```bash
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+sudo killall coreaudiod
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+```
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+
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+### 修复后验证
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+
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+```bash
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+pgrep -l coreaudiod # 确认 PID 已变化（已重启）
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+open -a Music # 测试启动
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+```
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+
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+## 历史记录
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+
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+| 日期 | 机器 | macOS 版本 | 详情 |
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+|------|------|------------|------|
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+| 2026-06-21 | MacBook Air M5 (Mac17,3) | 26.5.1 | coreaudiod PID 183 死锁，osascript 授权重启后恢复，新 PID 17057 |
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