USB Modem w/ Jetson Orin Nano

[sappington.wesley]

Hey all!

I’m trying to get a USB modem connected to give my Jetson Orin Nano the ability to connect to cellular data.

I’ve successfully managed to get comms running w/ the USB modem. but I can’t connect due to what seems to be a kernel related error.

jetson@ubuntu:~$ sudo wvdial
--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT 115200
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Sun Mar  9 22:40:32 2025
--> Pid of pppd: 6301
--> Disconnecting at Sun Mar  9 22:40:33 2025
--> The PPP daemon has died: No ppp module error (exit code = 4)
--> man pppd explains pppd error codes in more detail.
--> I guess that's it for now, exiting
--> The PPP daemon has died. (exit code = 4)

Any thoughts on how to fix this? (Ideally without tearing apart my Kernel?)

Thanks!

-W

[DaneLLL]

Hi,
Please check if additional kernel configs have to be enabled for the component. And refer to developer guide to rebuild kernel image:

Kernel Customization — NVIDIA Jetson Linux Developer Guide

[sappington.wesley]

Wait, I see what you mean now! But two questions:

1. The very first step of the docs involves running the source_sync.sh script, which seems easier than downloading from source manually. Where do I find/get this script?
2. What configuration/kernel setting would I need to include to get the functionality I need? Specifically, I believe I need the library usb_wwan.h

Thanks so much for the reply!

[DaneLLL]

Hi,
If you have host PC which ever flashed the Orin Nano developer kit thorough SDKManager. Or have run the manual commands:

Quick Start — NVIDIA Jetson Linux Developer Guide

The script will be in

Linux_for_Tegra/source/source_sync.sh

We are uncertain which configs have to be enabled. This would need other users to share experience.