LTE HAT can't connect to the internet

blynkgdp · September 24, 2020, 5:57am

Hi there,

I’m using Raspberry Pi 3 B+ with Sixfab’s 3G/4G&LTE Base HAT, and when I reach the following command I get this error.

pi@MYHOSTNAME:~/files/quectel-CM $ sudo ./quectel-CM -s telesom
[07-25_13:31:01:222] Quectel_QConnectManager_Linux_V1.5.9
[07-25_13:31:01:224] network interface ‘’ or qmidev ‘’ is not exist
[07-25_13:31:01:224] qmidevice_detect failed

I checked other questions similar to this in this forum but they are just suggesting to replace the USB which I did (I even replaced the HAT) but none of that really works. Feel free to for any information you may deem useful.

Thanks in advance

ensar · September 24, 2020, 10:48am

Hi @blynkgdp,

Please share the output of:
uname -r
lsusb -t

You could also try to connect to the internet by following the tutorial here:

https://docs.sixfab.com/page/setting-up-a-data-connection-over-qmi-interface-using-libqmi

michael.harris · September 25, 2020, 1:14am

I hope it is OK to jump into this thread. I get the nearly the same error (different linux) as @blynkgdp with this command:

sudo ./files/quectel-CM/quectel-CM -s internet
  [09-24_15:31:41:938] Quectel_QConnectManager_Linux_V1.6.0.12
  [09-24_15:31:41:942] network interface ‘’ or qmidev ‘’ is not exist
  [09-24_15:31:41:942] qmidevice_detect failed
  [09-24_15:31:41:942] qmidevice_detect failed

SETUP
RPi Hat, Telit LE910C1 *does the Telit have a different software install?
debian version 9.13 (command: cat /etc/debian_version)

The error comes after following the QMI Interface with Base HAT instructions and running the last command sudo ./quectel-CM -s internet (and I tried iot.simon and IoT.simon for my APN as well).

Output for uname -r is 4.19.66-v7+
Output for 'lsusb -t' is as follows:

/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
    |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/3p, 480M
         |__ Port 1: Dev 5, If 0, Class=Vendor Specific Class, Driver=lan78xx, 480M
         |__ Port 2: Dev 4, If 0, Class=Vendor Specific Class, Driver=option, 480M
         |__ Port 2: Dev 4, If 1, Class=Vendor Specific Class, Driver=, 480M
         |__ Port 2: Dev 4, If 2, Class=Vendor Specific Class, Driver=qmi_wwan, 480M
         |__ Port 2: Dev 4, If 3, Class=Vendor Specific Class, Driver=option, 480M
         |__ Port 2: Dev 4, If 4, Class=Vendor Specific Class, Driver=option, 480M
         |__ Port 2: Dev 4, If 5, Class=Vendor Specific Class, Driver=option, 480M
         |__ Port 2: Dev 4, If 6, Class=Vendor Specific Class, Driver=option, 480M

After trying to complete the tutorial suggested by @ensar, I get stuck on the following:

sudo qmicli -d /dev/cdc-wdm0 --wda-get-data-format
returns:

[24 Sep 2020, 21:10:35] -Warning ** Error reading from istream: Resource temporarily unavailable
error: couldn’t create client for the ‘wda’ service: CID allocation failed in the CTL client: Transaction timed out

And of course I still get the same original error with sudo ./files/quectel-CM/quectel-CM -s internet (not a suprise?).

Thank you.

blynkgdp · September 26, 2020, 5:40am

Hi @ensar

Thanks for your quick reply.

The command uname -r outputs:
5.4.51-v7+

and lsusb -t outputs:

/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/3p, 480M
            |__ Port 1: Dev 4, If 0, Class=Vendor Specific Class, Driver=lan78xx, 480M

I hope you find something useful in there, and I will make sure to follow the tutorial you suggested as well and let you know of the results

michael.harris · September 27, 2020, 10:28pm

After a fully clean install of Rasberry Pi OS, the QMI interface using libqmi has worked for me. Now to see if my other hat was the interference.

ensar · September 28, 2020, 11:05am

Hi @blynkgdp,

Module drivers are missing or not installed. First, clean install Raspberry Pi OS and then check the qmi_wwan driver. If this doesn’t solve your problem, please follow the driver installation steps in Quectel WCDMA & LTE Linux USB Driver User Guide.

blynkgdp · September 29, 2020, 7:45am

Hi again @ensar,

I did a clean install but the lsusb -t command outputs the same thing, and I couldn’t figure out how to install the drivers following the guide you suggested, so I was wondering if you could help me with that, maybe giving me steps to follow/commands to execute or something.

Thanks in advance

blynkgdp · September 30, 2020, 5:26am

This it the output of the lsusb -t command:

/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/3p, 480M
            |__ Port 1: Dev 4, If 0, Class=Vendor Specific Class, Driver=lan78xx, 480M

and the dmesg | grep tty outputs:

[0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_headphones=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=ttyS0,115200 console=tty1 root=PARTUUID=5866eca7-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles
[ 0.000310] printk: console [tty1] enabled
[ 2.338481] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2

ensar · October 1, 2020, 8:39am

Please make sure you plug the mini PCle module into HAT.

blynkgdp · October 3, 2020, 6:01am

This is my current setup

But I’m still getting the same outputs and can’t connect to the internet