As a workaround, I downgraded usb-modeswitch and usb-modeswitch-data to the saucy versions:
usb-modeswitch_1.2.3+repack0-1ubuntu3_amd64.deb usb-modeswitch-data_20120815-2_all.deb I've attached the usb_modeswitch log from this, which worked. ** Attachment added: "usb_modeswitch.saucy.log" https://bugs.launchpad.net/ubuntu/+source/usb-modeswitch/+bug/1319105/+attachment/4111562/+files/usb_modeswitch.saucy.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to usb-modeswitch in Ubuntu. https://bugs.launchpad.net/bugs/1319105 Title: Cisco AM10 no longer switches mode Status in “usb-modeswitch” package in Ubuntu: New Bug description: My Cisco AM10 "valet connector" WiFi adaptor This worked under Saucy but broke when I upgraded to Trusty. I've attached usb_modeswitch.log obtained from turning debugging on. From before the upgrade, I didn't ever run in debugging mode but syslog entries looked like: syslog.7.gz:May 7 10:08:34 nyantiger usb_modeswitch: switching device 1307:1169 on 003/025 syslog.7.gz:May 7 10:08:36 nyantiger usb_modeswitch: switched to 13b1:0031 on 003/025 Now there's just: syslog:May 13 10:37:24 nyantiger usb_modeswitch: switch device 1307:1169 on 003/010 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: usb-modeswitch 2.1.1+repack0-1ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 Date: Tue May 13 12:02:54 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2014-02-02 (100 days ago) InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131017) ProcEnviron: LANGUAGE=en_CA:en TERM=screen PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: usb-modeswitch UpgradeStatus: Upgraded to trusty on 2014-05-13 (0 days ago) mtime.conffile..etc.usb.modeswitch.conf: 2014-05-13T11:51:17.900534 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/usb-modeswitch/+bug/1319105/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

