Posts tagged "linux":

GPS Modem Troubleshooting Report

On a Panasonic Toughbook CF-31-5 running Xubuntu 26.04 LTS, the Sierra Wireless modem stopped exposing the QMI control device /dev/cdc-wdm0. The system still showed /dev/ttyUSB* serial devices initially, but GPS/QMI tooling failed because commands targeting /dev/cdc-wdm0 could no longer run.