What: /sys/bus/platform/devices//wwan_reset Date: April 2026 KernelVersion: 7.2 Contact: Jackbb Wu Description: Writing to this file triggers a Platform Level Device Reset (PLDR) of the Dell DW5826e WWAN module via an ACPI _DSM method. This can be used to recover the modem when it is in a frozen state and unable to respond to USB commands.