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器件型号：SK-AM64B 工具与软件：
大家好-我正在使用通过 USB 设备端口(USB-A)连接的 Quectel 评估板(手持 EG25-G 模块)、并且我间歇性地看到设备脱落。 它似乎与任何特定的交通无关-是否存在任何已知的问题或经验与此类项目?
下面是此类压降和重新连接的示例。
10-02_12:52:19:506] /usr/share/udhcpc/default.script: Adding DNS 192.168.111.2 [10-02_12:52:19:506] /usr/share/udhcpc/default.script: Adding DNS 192.168.112.2 Dropped protocol specifier '.udhcpc' from 'wwu1i4.udhcpc'. Using 'wwu1i4' (ifindex=14). [ 2996.560810] usb usb1-port1: disabled by hub (EMI?), re-enabling... [ 2996.567066] usb 1-1: USB disconnect, device number 10 [ 2996.574078] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [ 2996.586019] option 1-1:1.0: device disconnected [ 2996.597919] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1 [ 2996.606327] option 1-1:1.1: device disconnected [ 2996.612856] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2 [ 2996.627858] option 1-1:1.2: device disconnected [ 2996.635698] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3 [ 2996.648711] option 1-1:1.3: device disconnected [ 2996.654574] qmi_wwan_q 1-1:1.4 wwu1i4: unregister 'qmi_wwan_q' usb-xhci-hcd.6.auto-1, WWAN/QMI Raw IP device [10-02_12:52:24:232] QmiWwanThread poll err/hup/inval [10-02_12:52:24:232] poll fd = 7, events = 0x0018 [10-02_12:52:24:233] QmiWwanThread exit [10-02_12:52:24:233] ip addr flush dev wwu1i4 Device "wwu1i4" does not exist. [10-02_12:52:24:269] ip link set dev wwu1i4 down Cannot find device "wwu1i4" [10-02_12:52:24:307] qmi_main exit [ 2996.964907] usb 1-1: new high-speed USB device number 11 using xhci-hcd [ 2997.137321] option 1-1:1.0: GSM modem (1-port) converter detected [ 2997.144127] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 2997.156181] option 1-1:1.1: GSM modem (1-port) converter detected [ 2997.163051] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1 [ 2997.173263] option 1-1:1.2: GSM modem (1-port) converter detected [ 2997.181254] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2 [ 2997.188797] option 1-1:1.3: GSM modem (1-port) converter detected [ 2997.195623] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3 [ 2997.209427] qmi_wwan_q 1-1:1.4: cdc-wdm0: USB WDM device [ 2997.215925] qmi_wwan_q 1-1:1.4: Quectel EG25-G work on RawIP mode [ 2997.224233] qmi_wwan_q 1-1:1.4: rx_urb_size = 1520 [ 2997.230559] qmi_wwan_q 1-1:1.4 wwan0: register 'qmi_wwan_q' at usb-xhci-hcd.6.auto-1, WWAN/QMI Raw IP device, 9e:09:1f:6e:ce:b2 [ 2997.431314] qmi_wwan_q 1-1:1.4 wwu1i4: renamed from wwan0
