Hi,
> could you please attach the full debug logs, so we can have a complete > picture of what's going on? > Thanks a lot, the full syslog is here: https://pastebin.com/6X5K0gXU > Moreover, what's the PID of your modem? > >From lsusb: Bus 001 Device 076: ID 1bc7:1201 Telit Bus 001 Device 075: ID 1bc7:1201 Telit They are both LE910s, the one I'm using (ttyUSB3 in the above syslog) is an LE910 EUG (Euro / Aus). The other which I don't have a SIM card in is an LE910 SVG (North America). > By default LE910 uses QMI protocol (cdc-wdmX device, instead of ttyUSB). > Perhaps missing support from the kernel? Here are the CDC-related ones: grep CDC .config CONFIG_USB_NET_CDCETHER=y # CONFIG_USB_NET_CDC_EEM is not set CONFIG_USB_NET_CDC_NCM=y # CONFIG_USB_NET_CDC_MBIM is not set CONFIG_USB_NET_CDC_SUBSET=y # CONFIG_DRM_TILCDC is not set # CONFIG_USB_CDC_COMPOSITE is not set Also QMI-related: grep QMI .config # CONFIG_MSM_TEST_QMI_CLIENT is not set CONFIG_USB_NET_QMI_WWAN=y CONFIG_MSM_QMI_INTERFACE=y # CONFIG_MEM_SHARE_QMI_SERVICE is not set CONFIG_QMI_ENCDEC=y # CONFIG_QMI_ENCDEC_DEBUG is not set Many thanks for any hints, Kelvin.
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