Cannot send qmicli commands after installing libqmi-utils udhcpc

Raspberry Pi Network HATs
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1

Hi I am trying to connect to the internet with my Twillio Super SIM to my Quectel UC20-G which is on a SixFab Base Hat. It seems to be going successfully but after installing

sudo apt update && sudo apt install libqmi-utils udhcpc

I run into an issue running the following command

sudo qmicli -d /dev/cdc-wdm0 --dms-set-operating-mode='online'

Which comes back with the following error:
[02 Dec 2021, 16:40:48] -Warning ** Error reading from istream: Resource temporarily unavailable
error: couldn't create client for the 'dms' service: CID allocation failed in the CTL client: Transaction timed out

I tried just “get-operation-mode” but same response

I ran
uname -r

5.10.63-v7+

lsusb -t

/:  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 2: Dev 5, If 3, Class=Vendor Specific Class, Driver=option, 480M
            |__ Port 2: Dev 5, If 1, Class=Vendor Specific Class, Driver=option, 480M
            |__ Port 2: Dev 5, If 4, Class=Vendor Specific Class, Driver=qmi_wwan, 480M
            |__ Port 2: Dev 5, If 2, Class=Vendor Specific Class, Driver=option, 480M
            |__ Port 2: Dev 5, If 0, Class=Vendor Specific Class, Driver=option, 480M
            |__ Port 1: Dev 7, If 0, Class=Vendor Specific Class, Driver=lan78xx, 480M
        |__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 3: Dev 6, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 3: Dev 6, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M

Any help would be appreciated!

2

Hi @simondpalmer ,

When you run the qmicli command, are you completely sure there are no other qmicli commands still running or ModemManager not running at the same time?

3

I ended up just purchasing the EC25-G with a twilio Super SIM following your tutorial and I’m up and running now. I’ll try and use this UC20 on a future application. Thanks!

4

This is not a solution. I’m running the same problem using libqmi-utils and not able to set operating mode.
If there are other commands still running, how can I detect them and how to stop them?