To answer your question,
here is the output of dmesg command regarding ttyUSB serial ports enumeration
[ 5.304644] usb 2-2: Qualcomm USB modem converter now attached to ttyUSB2
[ 5.305834] usb 2-2: Qualcomm USB modem converter now attached to ttyUSB3
[ 5.307015] usb 2-2: Qualcomm USB modem converter now attached to ttyUSB4
/dev/ttyUSB3 port is enumerated (so i don’t know why at command are not supported by ttyUSB3 instead)
About the mbpl driver, I built it from source on my kernel so i don’t use GOBI
I mooved the kernel files generated :
- qcserial.ko
- qmi_wwan.ko
- usb_wwan.ko
to /lib/modules/4.16.18+/kernel/drivers/net/usb/ and ran the following commands :
depmod 4.16.18+
update-initramfs -c -k 4.16.18+
reboot
I tried to follow the next steps on your thread here Example on establishing data connection by AT!SCACT via MBPL R20 driver
qmicli --device=/dev/cdc-wdm0 --wds-noop --client-no-release-cid
But i have no cdc interface so the command fails
Yet, dmesg tells me a cdc-wdm interface has been registered :
[ 5.323756] usbcore: registered new interface driver cdc_wdm