Having done some further investigation, I believe this is a udev issue, not a network manager issue.
Having issued the command udevadm control --log-priority=debug I then inserted first the K3770 and then the K3520-Z. I've subsequently been looking at the very copious debug output from udev in syslog. For both dongles udev is successfully finding a rule and invoking usb_modeswitch but although the mode switch is successful for the K3770, it is unsuccessful for the K3520-Z. The way in which isb_modeswitch is being invoked by udev differs substantially for the two dongles. This surprises me given that the manual method for switching them is fairly similar. I shall spend some more time trying to make greater sense of the udev debug output to see if I can identify the cause of the difference in the invocation of usb_modeswitch. Meanwhile if anyone would like me to upload the extracts from syslog for the K-3770 and the K3520-Z, let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1175093 Title: K3520-Z mode not switched automatically To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1175093/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
