From: Xiaofan C. <xia...@gm...> - 2018-09-18 05:20:08
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On Wed, Sep 12, 2018 at 4:08 PM Dmitry Donskoy <ad...@da...> wrote: > > Thanks! I tried to do this, but the log is not something I can > understand... Can you have a look please, is there something that can > lead to a conclusion? Please reply to the mailing list. Thanks. >From the debug log, the device is kicked out by Windows. So this further conclues that the device is the problem. 00000150 35.34378433 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000151 39.12704086 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000152 39.12715149 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000153 39.12784195 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 ********************* 00000001 0.00000000 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000002 0.21539547 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000001 7.32802153 libusb0-sys:[DriverEntry] [loading-driver] v1.2.6.0 00000002 7.32823467 libusb0-sys:dbg [debug_show_devices] [AttachedDevice #0] \Driver\DwDevGuard 00000003 7.32829523 libusb0-sys:[add_device] device #1 created for usb\vid_0d9f&pid_0004&rev_0002 00000004 7.32833958 libusb0-sys:[reg_get_properties] using default device interface guid. 00000005 7.32834959 libusb0-sys:dbg [reg_get_properties] reg-key-name=\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\USB\VID_0D9F&PID_0004\004-0D9F-000\Device Parameters 00000006 7.32835770 libusb0-sys:wrn [add_device] [FILTER-MODE-MISMATCH] device is reporting itself as normal when there are already attached device(s). 00000007 7.32835865 usb\vid_0d9f&pid_0004&rev_0002 00000008 7.32851362 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=1 00000009 7.32854319 libusb0-sys:[add_device] updated interface registry with LUsb0 direct-access symbolic link. id=0001 00000010 7.32855082 libusb0-sys:dbg [add_device] [normal-mode] id=#1 usb\vid_0d9f&pid_0004&rev_0002 00000011 7.32855320 libusb0-sys:[add_device] complete status=00000000 00000012 7.32896185 libusb0-sys:[dispatch_pnp] IRP_MN_START_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000013 7.32927561 libusb0-sys:dbg [on_start_complete] is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000014 7.32929039 libusb0-sys:dbg [on_start_complete] applying active configuration for usb\vid_0d9f&pid_0004&rev_0002 00000015 7.32929945 libusb0-sys:[set_configuration] setting configuration index 0 timeout=5000libusb0-sys:[get_descriptor] buffer size: 18 type: 0001 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000016 7.33450222 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000017 7.33451462 libusb0-sys:[get_descriptor] buffer size: 9 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000018 7.33951044 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000019 7.33952093 libusb0-sys:[get_descriptor] buffer size: 34 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000020 7.34749603 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000021 7.34750175 libusb0-sys:[set_configuration] found interface 0 00000022 7.35051012 libusb0-sys:dbg [set_configuration] #1 usb\vid_0d9f&pid_0004&rev_0002 passing configuration request to target-device.libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000023 7.35052967 libusb0-sys:[update_pipe_info] interface 0 00000024 7.35053492 libusb0-sys:[update_pipe_info] EP81h maximum-packet-size=8 maximum-transfer-size=4194304 00000025 7.35053825 libusb0-sys:wrn [update_pipe_info] overriding EP81h maximum-transfer-size=65536 00000026 7.35073996 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000003 9.67733288 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000004 10.04938507 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000027 11.10794640 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000028 11.10802174 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000029 11.10856533 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000030 11.10861778 libusb0-sys:[dispatch_pnp] deleting device #1 usb\vid_0d9f&pid_0004&rev_0002 00000031 11.10872364 libusb0-sys:[unload] [unloading-driver] v1.2.6.0 00000032 14.32586193 libusb0-sys:[DriverEntry] [loading-driver] v1.2.6.0 00000033 14.32618713 libusb0-sys:dbg [debug_show_devices] [AttachedDevice #0] \Driver\DwDevGuard 00000034 14.32625580 libusb0-sys:[add_device] device #1 created for usb\vid_0d9f&pid_0004&rev_0002 00000035 14.32630062 libusb0-sys:[reg_get_properties] using default device interface guid. 00000036 14.32631016 libusb0-sys:dbg [reg_get_properties] reg-key-name=\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\USB\VID_0D9F&PID_0004\004-0D9F-000\Device Parameters 00000037 14.32631969 libusb0-sys:wrn [add_device] [FILTER-MODE-MISMATCH] device is reporting itself as normal when there are already attached device(s). 00000038 14.32631969 usb\vid_0d9f&pid_0004&rev_0002 00000039 14.32650757 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=1 00000040 14.32653809 libusb0-sys:[add_device] updated interface registry with LUsb0 direct-access symbolic link. id=0001 00000041 14.32654476 libusb0-sys:dbg [add_device] [normal-mode] id=#1 usb\vid_0d9f&pid_0004&rev_0002 00000042 14.32654858 libusb0-sys:[add_device] complete status=00000000 00000043 14.32714176 libusb0-sys:[dispatch_pnp] IRP_MN_START_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000044 14.32746792 libusb0-sys:dbg [on_start_complete] is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000045 14.32747459 libusb0-sys:dbg [on_start_complete] applying active configuration for usb\vid_0d9f&pid_0004&rev_0002 00000046 14.32748318 libusb0-sys:[set_configuration] setting configuration index 0 timeout=5000libusb0-sys:[get_descriptor] buffer size: 18 type: 0001 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000047 14.33349800 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000048 14.33350563 libusb0-sys:[get_descriptor] buffer size: 9 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000049 14.33849907 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000050 14.33851051 libusb0-sys:[get_descriptor] buffer size: 34 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000051 14.34648705 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000052 14.34649372 libusb0-sys:[set_configuration] found interface 0 00000053 14.34950447 libusb0-sys:dbg [set_configuration] #1 usb\vid_0d9f&pid_0004&rev_0002 passing configuration request to target-device.libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000054 14.34951687 libusb0-sys:[update_pipe_info] interface 0 00000055 14.34952068 libusb0-sys:[update_pipe_info] EP81h maximum-packet-size=8 maximum-transfer-size=4194304 00000056 14.34952354 libusb0-sys:wrn [update_pipe_info] overriding EP81h maximum-transfer-size=65536 00000057 14.34974384 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000058 18.10996437 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000059 18.11004066 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000060 18.11078644 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000061 18.11085510 libusb0-sys:[dispatch_pnp] deleting device #1 usb\vid_0d9f&pid_0004&rev_0002 00000062 18.11095238 libusb0-sys:[unload] [unloading-driver] v1.2.6.0 00000005 19.68000603 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000006 20.05203819 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000063 21.31895828 libusb0-sys:[DriverEntry] [loading-driver] v1.2.6.0 00000064 21.31919289 libusb0-sys:dbg [debug_show_devices] [AttachedDevice #0] \Driver\DwDevGuard 00000065 21.31926537 libusb0-sys:[add_device] device #1 created for usb\vid_0d9f&pid_0004&rev_0002 00000066 21.31930733 libusb0-sys:[reg_get_properties] using default device interface guid. 00000067 21.31931686 libusb0-sys:dbg [reg_get_properties] reg-key-name=\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\USB\VID_0D9F&PID_0004\004-0D9F-000\Device Parameters 00000068 21.31932640 libusb0-sys:wrn [add_device] [FILTER-MODE-MISMATCH] device is reporting itself as normal when there are already attached device(s). 00000069 21.31932640 usb\vid_0d9f&pid_0004&rev_0002 00000070 21.31948280 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=1 00000071 21.31951332 libusb0-sys:[add_device] updated interface registry with LUsb0 direct-access symbolic link. id=0001 00000072 21.31952095 libusb0-sys:dbg [add_device] [normal-mode] id=#1 usb\vid_0d9f&pid_0004&rev_0002 00000073 21.31952286 libusb0-sys:[add_device] complete status=00000000 00000074 21.32005310 libusb0-sys:[dispatch_pnp] IRP_MN_START_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000075 21.32035446 libusb0-sys:dbg [on_start_complete] is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000076 21.32035828 libusb0-sys:dbg [on_start_complete] applying active configuration for usb\vid_0d9f&pid_0004&rev_0002 00000077 21.32036781 libusb0-sys:[set_configuration] setting configuration index 0 timeout=5000libusb0-sys:[get_descriptor] buffer size: 18 type: 0001 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000078 21.32552147 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000079 21.32553291 libusb0-sys:[get_descriptor] buffer size: 9 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000080 21.33049393 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000081 21.33050346 libusb0-sys:[get_descriptor] buffer size: 34 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000082 21.33850098 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000083 21.33851814 libusb0-sys:[set_configuration] found interface 0 00000084 21.34150505 libusb0-sys:dbg [set_configuration] #1 usb\vid_0d9f&pid_0004&rev_0002 passing configuration request to target-device.libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000085 21.34151649 libusb0-sys:[update_pipe_info] interface 0 00000086 21.34152222 libusb0-sys:[update_pipe_info] EP81h maximum-packet-size=8 maximum-transfer-size=4194304 00000087 21.34152794 libusb0-sys:wrn [update_pipe_info] overriding EP81h maximum-transfer-size=65536 00000088 21.34180069 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000089 25.10994148 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000090 25.11001968 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000091 25.11064339 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000092 25.11069679 libusb0-sys:[dispatch_pnp] deleting device #1 usb\vid_0d9f&pid_0004&rev_0002 00000093 25.11077499 libusb0-sys:[unload] [unloading-driver] v1.2.6.0 00000094 28.32068634 libusb0-sys:[DriverEntry] [loading-driver] v1.2.6.0 00000095 28.32087708 libusb0-sys:dbg [debug_show_devices] [AttachedDevice #0] \Driver\DwDevGuard 00000096 28.32093620 libusb0-sys:[add_device] device #1 created for usb\vid_0d9f&pid_0004&rev_0002 00000097 28.32099152 libusb0-sys:[reg_get_properties] using default device interface guid. 00000098 28.32100105 libusb0-sys:dbg [reg_get_properties] reg-key-name=\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\USB\VID_0D9F&PID_0004\004-0D9F-000\Device Parameters 00000099 28.32101059 libusb0-sys:wrn [add_device] [FILTER-MODE-MISMATCH] device is reporting itself as normal when there are already attached device(s). 00000100 28.32101059 usb\vid_0d9f&pid_0004&rev_0002 00000101 28.32119560 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=1 00000102 28.32122803 libusb0-sys:[add_device] updated interface registry with LUsb0 direct-access symbolic link. id=0001 00000103 28.32125473 libusb0-sys:dbg [add_device] [normal-mode] id=#1 usb\vid_0d9f&pid_0004&rev_0002 00000104 28.32125854 libusb0-sys:[add_device] complete status=00000000 00000105 28.32207680 libusb0-sys:[dispatch_pnp] IRP_MN_START_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000106 28.32253647 libusb0-sys:dbg [on_start_complete] is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000107 28.32254219 libusb0-sys:dbg [on_start_complete] applying active configuration for usb\vid_0d9f&pid_0004&rev_0002 00000108 28.32260895 libusb0-sys:[set_configuration] setting configuration index 0 timeout=5000libusb0-sys:[get_descriptor] buffer size: 18 type: 0001 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000109 28.32851028 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000110 28.32852173 libusb0-sys:[get_descriptor] buffer size: 9 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000111 28.33350182 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000112 28.33350754 libusb0-sys:[get_descriptor] buffer size: 34 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000113 28.34148979 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000114 28.34149742 libusb0-sys:[set_configuration] found interface 0 00000115 28.34451294 libusb0-sys:dbg [set_configuration] #1 usb\vid_0d9f&pid_0004&rev_0002 passing configuration request to target-device.libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000116 28.34452820 libusb0-sys:[update_pipe_info] interface 0 00000117 28.34453583 libusb0-sys:[update_pipe_info] EP81h maximum-packet-size=8 maximum-transfer-size=4194304 00000118 28.34453964 libusb0-sys:wrn [update_pipe_info] overriding EP81h maximum-transfer-size=65536 00000119 28.34478760 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000007 29.68789864 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000008 30.05833435 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000120 32.10197449 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000121 32.10205078 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000122 32.10254288 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000123 32.10257339 libusb0-sys:[dispatch_pnp] deleting device #1 usb\vid_0d9f&pid_0004&rev_0002 00000124 32.10263062 libusb0-sys:[unload] [unloading-driver] v1.2.6.0 00000125 35.32081223 libusb0-sys:[DriverEntry] [loading-driver] v1.2.6.0 00000126 35.32102203 libusb0-sys:dbg [debug_show_devices] [AttachedDevice #0] \Driver\DwDevGuard 00000127 35.32108307 libusb0-sys:[add_device] device #1 created for usb\vid_0d9f&pid_0004&rev_0002 00000128 35.32114029 libusb0-sys:[reg_get_properties] using default device interface guid. 00000129 35.32114792 libusb0-sys:dbg [reg_get_properties] reg-key-name=\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\USB\VID_0D9F&PID_0004\004-0D9F-000\Device Parameters 00000130 35.32115936 libusb0-sys:wrn [add_device] [FILTER-MODE-MISMATCH] device is reporting itself as normal when there are already attached device(s). 00000131 35.32115936 usb\vid_0d9f&pid_0004&rev_0002 00000132 35.32132339 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=1 00000133 35.32136154 libusb0-sys:[add_device] updated interface registry with LUsb0 direct-access symbolic link. id=0001 00000134 35.32136917 libusb0-sys:dbg [add_device] [normal-mode] id=#1 usb\vid_0d9f&pid_0004&rev_0002 00000135 35.32137299 libusb0-sys:[add_device] complete status=00000000 00000136 35.32196808 libusb0-sys:[dispatch_pnp] IRP_MN_START_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000137 35.32229233 libusb0-sys:dbg [on_start_complete] is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000138 35.32229996 libusb0-sys:dbg [on_start_complete] applying active configuration for usb\vid_0d9f&pid_0004&rev_0002 00000139 35.32233429 libusb0-sys:[set_configuration] setting configuration index 0 timeout=5000libusb0-sys:[get_descriptor] buffer size: 18 type: 0001 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000140 35.32750702 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000141 35.32751465 libusb0-sys:[get_descriptor] buffer size: 9 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000142 35.33249664 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000143 35.33250427 libusb0-sys:[get_descriptor] buffer size: 34 type: 0002 recipient: 0000 index: 0000 language id: 0000 timeout: 5000 00000144 35.34049225 libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000145 35.34049606 libusb0-sys:[set_configuration] found interface 0 00000146 35.34352112 libusb0-sys:dbg [set_configuration] #1 usb\vid_0d9f&pid_0004&rev_0002 passing configuration request to target-device.libusb0-sys:dbg [call_usbd_ex] status = 00000000h 00000147 35.34353256 libusb0-sys:[update_pipe_info] interface 0 00000148 35.34353638 libusb0-sys:[update_pipe_info] EP81h maximum-packet-size=8 maximum-transfer-size=4194304 00000149 35.34354019 libusb0-sys:wrn [update_pipe_info] overriding EP81h maximum-transfer-size=65536 00000150 35.34378433 libusb0-sys:dbg [dispatch_pnp] IRP_MN_QUERY_CAPABILITIES: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000151 39.12704086 libusb0-sys:[dispatch_pnp] IRP_MN_SURPRISE_REMOVAL: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000152 39.12715149 libusb0-sys:[set_filter_interface_key] updated interface registry with LUsb0 direct-access symbolic link. id=-1 00000153 39.12784195 libusb0-sys:[dispatch_pnp] IRP_MN_REMOVE_DEVICE: is-filter=N usb\vid_0d9f&pid_0004&rev_0002 00000154 39.12790680 libusb0-sys:[dispatch_pnp] deleting device #1 usb\vid_0d9f&pid_0004&rev_0002 00000155 39.12796783 libusb0-sys:[unload] [unloading-driver] v1.2.6.0 00000009 39.69624710 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000010 40.06841278 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000011 49.69895554 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000012 50.07113647 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000013 59.98564148 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000014 60.48570633 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000015 69.71500397 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000016 70.08701324 [2128] UserNotificationThread::action() m_State=1 provMode=1 00000017 79.72379303 [2128] provisioned=0, prevAMTState=AMT Awaiting provisioning, newAMTState=AMT Awaiting provisioning 00000018 80.48637390 [2128] UserNotificationThread::action() m_State=1 provMode=1 -- Xiaofan |