On Tue, 2017-03-28 at 18:33 +0200, Bjørn Mork wrote: > Einar Jón <tolvupos...@gmail.com> writes: > > On 23 March 2017 at 02:42, Dan Williams <d...@redhat.com> wrote: > > > > > > RE PolicyMismatch: we're not quite sure what that error > > > represents; > > > we've determined that in some cases it means IPv4 vs. IPv6 > > > mismatch and > > > profiles in the modem, but that doesn't seem to always be the > > > case. > > > > I'm not sure what is causing it, but it's quite easy to reproduce > > by > > messing with the kernel module (e.g. reloading it): > > $ sudo rmmod qmi_wwan > > $ sudo modprobe qmi_wwan > > My best guess is that you experience some mismatch between an > auto-connected bearer and the bearer you try to connect. But it's a > wild guess. Try messing with the preconfigured profiles, changing > between IP, IPV6 and IPV4V6 contexts and see if you can prevent the > issue that way.
Are the QMI "autoconnect" settings actually the EPS Default Bearer, or are they different? Maybe qmicli --wds-set-autoconnect-settings=disabled would do the trick, but I don't know for sure. Dan > > > I have a couple of other ways to reset the modem, but no easy ones: > > 1) The Quectel manual says that the command > > AT+QRST=1,0 > > will reset the modem immediately, but I don't know how to send AT > > commands to the modem. > > There's no /dev/ttyUSB*, although the device is connected via USB: > > $ mmcli -m 0 | grep devices > > System | device: > > '/sys/devices/pci0000:00/0000:00:17.0/0000:01:00.0/0000:02:08.3/usb > > 2/2-3' > > > > 2) There's also a Control Signal Pin PERST# on the UC20 Mini PCIe > > board: > > - You can reset the module by driving the PERST# to a low level > > voltage of more than 150ms and then release it. > > Messing with the pins seems a bit drastic... > > > > 3) Rebooting the linux machine also seems to work, but this kills > > our uptime. > > > You could try a USB reset. There is a utility for that in the latest > (yet unreleased) usbutils: > https://github.com/gregkh/usbutils/blob/master/usbreset.c > > This will reset the USB device controller, but not necessarily reboot > the modem. So I am not sure it makes any difference in your > case. But > worth trying if you haven't already. > > > > Bjørn _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
