无法使用USB控制器。
只要存在USB控制器，虚拟机无法启动。
部分报错日志信息如下（更具体的见附件）：
2018-11-13T22:30:00.673+08:00| vcpu-0| I125: ----------------------------------------
2018-11-13T22:30:00.816+08:00| vcpu-0| I125: VNET: MACVNetConnectToNetwork 'Ethernet0' notify available.
2018-11-13T22:30:00.817+08:00| vcpu-0| I125: HGFSPublish: publishing 2 shares
2018-11-13T22:30:00.821+08:00| vcpu-0| I125: PolicyVMXFindPolicyKey: policy file does not exist.
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Vix: [mainDispatch.c:4233]: VMAutomation_ReportPowerOpFinished: statevar=0, newAppState=1872, success=1 additionalError=0
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Vix: [mainDispatch.c:4150]: VMAutomationReportPowerStateChange: Reporting power state change (opcode=0, err=0).
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Vix: [mainDispatch.c:4150]: VMAutomationReportPowerStateChange: Reporting power state change (opcode=2, err=0).
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Transitioned vmx/execState/val to poweredOn
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Tools: Adding Tools inactivity timer.
2018-11-13T22:30:00.827+08:00| vmx| I125: VUsbUpdateVigorFieldsAndAutoconnect: New set of 4 USB devices
2018-11-13T22:30:00.827+08:00| vmx| I125: USB: Found device [name:Realtek\ USB2.0-CRW vid:0bda pid:0129 path:1/0/0/2 speed:high family:vendor instanceId:USB\\VID_0BDA&PID_0129\\20100201396000000 serialnum:20100201396000000 arbRuntimeKey:1 version:3]
2018-11-13T22:30:00.827+08:00| vmx| I125: USB: Found device [name:Chicony\ HD\ Webcam vid:04f2 pid:b68b path:1/0/0/13 speed:high family:video instanceId:USB\\VID_04F2&PID_B68B\\01.00.00 serialnum:01.00.00 arbRuntimeKey:4 version:3]
2018-11-13T22:30:00.827+08:00| vcpu-1| I125: Intel VT: FlexPriority disabled.
2018-11-13T22:30:00.827+08:00| vcpu-2| I125: Intel VT: FlexPriority disabled.
2018-11-13T22:30:00.827+08:00| vmx| I125: USB: Found device [name:Intel\ 英特尔(R)\ 无线\ Bluetooth(R) vid:8087 pid:0aaa path:1/0/0/14 speed:full family:wireless,bluetooth instanceId:USB\\VID_8087&PID_0AAA\\5&37EF7D9B&0&14 arbRuntimeKey:5 version:3]
2018-11-13T22:30:00.827+08:00| vcpu-1| I125: Intel VT: VPID enabled.
2018-11-13T22:30:00.827+08:00| vcpu-2| I125: Intel VT: VPID enabled.
2018-11-13T22:30:00.827+08:00| vmx| I125: USB: Found device [name:Virtual\ Bluetooth\ Adapter vid:0e0f pid:0008 speed:full family:wireless,bluetooth deviceType:virtual-bluetooth info:0000001 version:3]
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Intel VT: FlexPriority disabled.
2018-11-13T22:30:00.827+08:00| vcpu-3| I125: Intel VT: FlexPriority disabled.
2018-11-13T22:30:00.827+08:00| vcpu-0| I125: Intel VT: VPID enabled.
2018-11-13T22:30:00.827+08:00| vcpu-3| I125: Intel VT: VPID enabled.
2018-11-13T22:30:00.829+08:00| vmx| A100: ConfigDB: Setting sata0:1.fileName = "auto detect"
2018-11-13T22:30:00.836+08:00| vcpu-2| I125: Intel VT enabled.
2018-11-13T22:30:00.836+08:00| vcpu-1| I125: Intel VT enabled.
2018-11-13T22:30:00.837+08:00| vcpu-0| I125: Intel VT enabled.
2018-11-13T22:30:00.837+08:00| vcpu-3| I125: Intel VT enabled.
2018-11-13T22:30:00.978+08:00| mks| I125: MKSControlMgr: connected
2018-11-13T22:30:01.384+08:00| vmx| I125: VUsbUpdateVigorFieldsAndAutoconnect: New set of 4 USB devices
2018-11-13T22:30:01.384+08:00| vmx| I125: USB: Found device [name:Realtek\ USB2.0-CRW vid:0bda pid:0129 path:1/0/0/2 speed:high family:vendor instanceId:USB\\VID_0BDA&PID_0129\\20100201396000000 serialnum:20100201396000000 arbRuntimeKey:1 version:3]
2018-11-13T22:30:01.384+08:00| vmx| I125: USB: Found device [name:Chicony\ HD\ Webcam vid:04f2 pid:b68b path:1/0/0/13 speed:high family:video instanceId:USB\\VID_04F2&PID_B68B\\01.00.00 serialnum:01.00.00 arbRuntimeKey:4 version:3]
2018-11-13T22:30:01.384+08:00| vmx| I125: USB: Found device [name:Intel\ 英特尔(R)\ 无线\ Bluetooth(R) vid:8087 pid:0aaa path:1/0/0/14 speed:full family:wireless,bluetooth instanceId:USB\\VID_8087&PID_0AAA\\5&37EF7D9B&0&14 arbRuntimeKey:5 version:3]
2018-11-13T22:30:01.384+08:00| vmx| I125: USB: Found device [name:Virtual\ Bluetooth\ Adapter vid:0e0f pid:0008 speed:full family:wireless,bluetooth deviceType:virtual-bluetooth info:0000001 version:3]
2018-11-13T22:31:00.829+08:00| vmx| I125: GuestRpcSendTimedOut: message to toolbox-dnd timed out.