# Setting up EM9291 Module **URL:** \ **Category:** IoT Modules\ **Tags:** faq, driver\ **Created:** [October 7, 2025, 5:14am UTC](https://forum.sierrawireless.com/t/setting-up-em9291-module/35558 "2025-10-07T05:14:04Z")\ **Posts on this page:** 1\ **Showing post:** 18
**Author:** ![arti.rajput](https://avatars.discourse-cdn.com/v4/letter/a/c67d28/32.png) [@arti.rajput](https://forum.sierrawireless.com/u/arti.rajput)\ **Post date:** [October 31, 2025, 4:42am UTC](https://forum.sierrawireless.com/t/setting-up-em9291-module/35558/18 "2025-10-31T04:42:14Z")
If I use the qmi driver from the semtech website. I do not see any wwan0 device. I can only see the wwan interface with mbim driver CDC\_MBIM driver. Also if I use both the drivers I get similar issues: > [@EM7421 failed in NETDEV WATCHDOG: wwan0 (cdc\_mbim): transmit queue 0 timed out](https://forum.sierrawireless.com/t/em7421-failed-in-netdev-watchdog-wwan0-cdc-mbim-transmit-queue-0-timed-out/24230): > > Noticed crash in driver in EM7421 module. It works fine for few days before noticing crash in dmesg logs. watchdog timeout with the transmit queue timed out, and the modem stops responding to AT channel too. Only recovery is router reboot. [425494.194583] ------------[cut here]------------ [425494.194590] NETDEV WATCHDOG: wwan0 (cdc\_mbim): transmit queue 0 timed out [425494.194630] WARNING: CPU: 2 PID: 0 at net/sched/sch\_generic.c:447 dev\_watchdog+0x27f/0x290 [425494.194631] Modules linke… > [@EM7565 and MC7430 USB3 crash](https://forum.sierrawireless.com/t/em7565-and-mc7430-usb3-crash/18177): > > I am running an EM7565 running SWI9X50C\_01.09.04.00 on OpenWrt with kernel 4.19.80 connected to an IPQ4019 on USB3 via mPCIe + adaptor. Getting the following crash. It seems to happen after an arbitrary amount of time, could be anywhere from a half an hour of use to a few days. I am just hoping for some suggestions on how to continue investigating, because I do not know the cause of this problem. Currently I am using ModemManager 10.8, libqmi 1.24.0 and libmbim 1.20, but I have tried variou… Thanks, Arti --- _[View the full topic](https://forum.sierrawireless.com/t/setting-up-em9291-module/35558)._