Peter Schüller, thank you for reporting this and helping make Ubuntu better. 
Could you please execute the following command only once, as it will 
automatically gather debugging information, in a terminal: 
apport-collect 1819362

** Changed in: linux-signed-hwe (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux-signed-hwe (Ubuntu)
       Status: New => Incomplete

** Package changed: linux-signed-hwe (Ubuntu) => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1819362

Title:
  HUAWEI E3531 HSPA+ USB Stick "please report the device ID to the Linux
  USB developers"

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a HUAWEI E3531 HSPA+ USB Stick

  When I plug it in, journalctl shows me

  Mär 10 19:21:20 pshp usb_modeswitch[3556]: usb_modeswitch: switched to 
12d1:14dc on 1/9
  Mär 10 19:21:20 pshp kernel: scsi 1:0:0:0: Direct-Access     HUAWEI   TF CARD 
Storage  2.31 PQ: 0 ANSI: 2
  Mär 10 19:21:20 pshp kernel: sd 1:0:0:0: Attached scsi generic sg0 type 0
  Mär 10 19:21:20 pshp kernel: sd 1:0:0:0: [sda] Attached SCSI removable disk
  Mär 10 19:21:21 pshp usb_modeswitch_dispatcher[3556]: Unable to open bind 
list file: No such file or directory
  Mär 10 19:21:21 pshp usb_modeswitch[3556]: usb_modeswitch: add device ID 
12d1:14dc to driver option
  Mär 10 19:21:21 pshp usb_modeswitch[3556]: usb_modeswitch: please report the 
device ID to the Linux USB developers!
  Mär 10 19:21:22 pshp ModemManager[860]: <info>  Couldn't check support for 
device at '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-1': not supported by any 
plugin

  And the modem does not work (no ttyUSBX appears)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.18.0-15-generic 4.18.0-15.16~18.04.1
  ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
  Uname: Linux 4.18.0-15-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Mar 10 19:17:23 2019
  EcryptfsInUse: Yes
  SourcePackage: linux-signed-hwe
  UpgradeStatus: Upgraded to bionic on 2018-07-01 (252 days ago)

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