Dan Irwin <[email protected]> writes: > Hello, > > I have a dell 3g "wwan" 5560 card in my laptop, which is detected, but does > not connect to the Internet. The card appears as wwan0 to my system. > > ModemManager seems to open ttyACM1 and ttyACM2 (but not ttyACM0), and > dhclient is started on wwan0. > > After sending DHCPDISCOVER 4 times, NetworkManager seems to give up. > > I'm not sure what is meant to happen here. I assume the card negotiates > with the network, and present's an ethernet interface (and presumably a > dhcp server) to the OS. However, something somewhere is broken. > > This configuration appears to work in Windows 7, and I think it also worked > in Fedora 17, but I'm not 100% sure. > > Short of re-installing F17, is there anything obvious I should look for?
I believe the Dell 5560 is a re-branded Ericsson F5321? If this is a new laptop, or you have recently upgraded the wwan firmware, then you may have hit the "NCM/MBIM problem". Do you have this parameter, and is it set to yes?: bjorn@nemi:~$ grep . /sys/module/cdc_ncm/parameters/prefer_mbim Y If so, then the problem may be solved by echo N >/sys/module/cdc_ncm/parameters/prefer_mbim followed by unbinding the modem from cdc_mbim and rebinding it to cdc_ncm. Which should happen automatically if you "unplug" and replug it (I know it's an internal module, but this might still be possible using rfkill). Or just unload the drivers and reload them to test: modprobe -r cdc_mbim modprobe cdc_ncm prefer_mbim=N If this works, then you may want to add a config workaround until MM support for MBIM is ready. Put something like this into a new /etc/modprobe.d/avoid-mbim.conf file: options cdc_ncm prefer_mbim=N (Note that you probably do want to remove this again when the MBIM support is available, because that will enable MM to better manage your modem). > I can provide logs, if needed. That would be good to confirm my wild guesses. Preferably including enough kernel logs to see which drivers are binding to the device. Bjørn _______________________________________________ networkmanager-list mailing list [email protected] https://mail.gnome.org/mailman/listinfo/networkmanager-list
