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This "modem key" worked out of the box for me in ubuntu 15.10.
However now, in 16.04, the "usb mode switch" is not done automatically
(both is the modem is plugged at boot or after).
I suppose it's an udev regression. So there is no kernel problem for me.
(first answered it in #1527914, also maybe related to #1431179)
WORKAROUND: After plugging in the device (lsusb):
Bus 002 Device 010: ID 12d1:1f01 Huawei Technologies Co., Ltd. E353/E3131 (Mass
storage mode)
Execute at a terminal:
usb_modeswitch -J -v 0x12d1 -p 0x1f01
and now the device works as expected and can be selected in network manager. As
per lsusb:
Bus 002 Device 011: ID 12d1:14dc Huawei Technologies Co., Ltd.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: udev 229-3ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CurrentDesktop: MATE
Date: Sun Mar 27 03:08:34 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-03-25 (1 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Beta amd64
(20160323.1)
MachineType: LENOVO 20BWS02G00
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic
root=UUID=3dd4b932-06dd-4c0b-8f63-1ee6b90969ed ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/27/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET56WW (1.21 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BWS02G00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET56WW(1.21):bd01/27/2016:svnLENOVO:pn20BWS02G00:pvrThinkPadT450s:rvnLENOVO:rn20BWS02G00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BWS02G00
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
** Affects: usb-modeswitch (Ubuntu)
Importance: Medium
Status: Triaged
** Tags: amd64 apport-bug latest-bios-1.21 regression-release xenial
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Huawei E3372 is not switched to modem mode automatically
https://bugs.launchpad.net/bugs/1562431
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