VMMDev: vmmDevHeartbeatFlatlinedTimer: Guest seems to be unresponsive. Last heartbeat received 5 seconds ago
日志显示如上
主要是因为“声音->启动声音->控制芯片”选择了“Intel HD 音频”,系统默认了,将芯片选择“ICH AC97”即可。
https://www.mmdowns.com/virtualbox-slow.html