The issue seems to be happening sporadically.
*WARNING: CPU: 1 PID: 0 at /linux-4.10.0/net/sched/sch_generic.c:316 dev_watchdog+0x22c/0x230NETDEV WATCHDOG: wwp0s (qmi_wwan): transmit queue 0 timed out* My current issue is somewhat similar to this one where the transmit queue is timing out ( qmi_wwan) https://lists.freedesktop.org/archives/libqmi-devel/2015-October/001310.html I will try out with *1.12.x *and check. Thanks, Ratnavel On Mon, Jul 13, 2020 at 8:39 PM Aleksander Morgado <aleksan...@aleksander.es> wrote: > Hey, > > > > > ModemManager - 1.10.8 ( Ubuntu 16.06.4) running on a Sierra Wireless > EM74xx modem > > > > Couldn't load extended signal information: No way to load extended > signal information > > ModemManager[1222]: <warn> Couldn't load extended signal information: > Couldn't peek QMI port > > ModemManager[1222]: <warn> Reloading stats failed: QMI operation > failed: Transaction timed out > > > > After this error, the ModemManager doesn't recover until a modem reset > is performed. The modem is in a kind of locked state. > > > > The IP is still existing and restarting the ModemManager or the system > is not helping out. > > > > What does the above error mean and is Modem Reset the only option to > bring the modem out of this state ? > > > > The above error means that the query to reload statistics didn't > finish properly because the response from the modem was not received. > That, by itself, may not be a problem, but what you're experiencing > surely seems like a problem in the QMI communication overall. Without > a ModemManager debug log it's hard to say what the actual problem is, > though. > > My suggestion is to upgrade ModemManager to at least 1.12.x and retry > running the daemon with --debug. You can use my 16.04 PPA here, which > doesn't have the latest MM version, but at least is newer than the one > you're using: > https://launchpad.net/~aleksander-m/+archive/ubuntu/modemmanager-xenial > > > -- > Aleksander > https://aleksander.es >
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