While testing a configuration, there was a segmentation fault. After that the Lte connection does not work. Nevertheless uqmi shows signal info but kernel log reports nothing and in /var/log/messages there are no AT commands. Ifup Lte command and rebooting does not resolve the problem.
I am wondering if there is any other way to bring up the interface and establish connection other than disconnecting the power. I had the same problem before, and disconnecting the power solved the problem. Now omnia is at a remote area and I am unable to disconnect the power for several days.
# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
"type": "hdr",
"rssi": -125,
"ecio": 5,
"io": -106,
"type": "lte",
"rssi": -84,
"rsrq": -8,
"rsrp": -114,
"snr": 84
}
dmesg | grep usb
[ 8.340620] usb 1-1: new high-speed USB device number 2 using orion-ehci
[ 8.685826] xhci-hcd f10f0000.usb3: xHCI Host Controller
[ 8.691179] xhci-hcd f10f0000.usb3: new USB bus registered, assigned bus number 2
[ 8.698772] xhci-hcd f10f0000.usb3: hcc params 0x0a000990 hci version 0x100 quirks 0x00010010
[ 8.707342] xhci-hcd f10f0000.usb3: irq 46, io mem 0xf10f0000
[ 8.721178] xhci-hcd f10f0000.usb3: xHCI Host Controller
[ 8.726506] xhci-hcd f10f0000.usb3: new USB bus registered, assigned bus number 3
[ 8.734045] usb usb3: We don't know the algorithms for LPM for this host, disabling LPM.
[ 8.750222] xhci-hcd f10f8000.usb3: xHCI Host Controller
[ 8.755571] xhci-hcd f10f8000.usb3: new USB bus registered, assigned bus number 4
[ 8.763167] xhci-hcd f10f8000.usb3: hcc params 0x0a000990 hci version 0x100 quirks 0x00010010
[ 8.771739] xhci-hcd f10f8000.usb3: irq 47, io mem 0xf10f8000
[ 8.785544] xhci-hcd f10f8000.usb3: xHCI Host Controller
[ 8.790877] xhci-hcd f10f8000.usb3: new USB bus registered, assigned bus number 5
[ 8.798405] usb usb5: We don't know the algorithms for LPM for this host, disabling LPM.
[ 8.815846] usbcore: registered new interface driver usb-storage
[ 9.060660] usb 3-1: new SuperSpeed USB device number 2 using xhci-hcd
[ 9.081735] usb-storage 3-1:1.0: USB Mass Storage device detected
[ 9.087949] scsi host2: usb-storage 3-1:1.0
[ 16.490491] usbcore: registered new interface driver cdc_wdm
[ 16.737916] usbcore: registered new interface driver ums-alauda
[ 16.744781] usbcore: registered new interface driver ums-cypress
[ 16.751774] usbcore: registered new interface driver ums-datafab
[ 16.758618] usbcore: registered new interface driver ums-freecom
[ 16.765561] usbcore: registered new interface driver ums-isd200
[ 16.772501] usbcore: registered new interface driver ums-jumpshot
[ 16.779440] usbcore: registered new interface driver ums-karma
[ 16.786608] usbcore: registered new interface driver ums-sddr09
[ 16.793491] usbcore: registered new interface driver ums-sddr55
[ 16.800492] usbcore: registered new interface driver ums-usbat
[ 16.812658] usbcore: registered new interface driver usbserial
[ 16.818537] usbcore: registered new interface driver usbserial_generic
[ 16.825128] usbserial: USB Serial support registered for generic
[ 16.858927] usbcore: registered new interface driver cdc_ether
[ 16.878160] qmi_wwan 1-1:1.4 wwan0: register 'qmi_wwan' at usb-f1058000.usb-1, WWAN/QMI device, 72:7d:59:79:91:b6
[ 16.888589] usbcore: registered new interface driver qmi_wwan
[ 16.895823] usbcore: registered new interface driver rndis_host
[ 17.023843] usbcore: registered new interface driver option
[ 17.029477] usbserial: USB Serial support registered for GSM modem (1-port)
[ 17.037358] usbcore: registered new interface driver qcserial
[ 17.043176] usbserial: USB Serial support registered for Qualcomm USB modem
[ 17.063086] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB0
[ 17.077596] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB1
[ 17.091632] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB2
[ 17.105408] usb 1-1: Qualcomm USB modem converter now attached to ttyUSB3