Public bug reported:

# issue:
 * wwan card DW5816e[413c:81cc] couldn't be recognized by modemmanager 
1.4.12-1ubuntu1 on xenial.
  - but works well on on Yakkety.

# investgation:
 * in failed case, mmcli -L shows nothing on Xenial with DW5816. Then tried 
install followed packages from Yakkety ppa on Xenial and wwan card works on 1st 
boot but failed after 2nd boot sometimes.
  - libmbim-glib4_1.14.0-1_amd64.deb
  - libmbim-glib-dev_1.14.0-1_amd64.deb
  - libmbim-proxy_1.14.0-1_amd64.deb
  - libmbim-utils_1.14.0-1_amd64.deb
  - libqmi-glib5_1.16.0-1_amd64.deb
  - libqmi-proxy_1.16.0-1_amd64.deb

 * different from ModemManager --debug
   - In passed case, it received message from /dev/cdc-wdm1 after send "Read 
max control message size from descriptors file: 4096" , but not happens to 
failed case. So, it prints "[mm-port-probe.c:261] 
mm_port_probe_set_result_qcdm(): (tty/ttyS4) port is not QCDM-capable" in 
failed case.
     - passed case: http://paste.ubuntu.com/24664908/
     - failed case: http://paste.ubuntu.com/24664910/

# Plan:
 * let the newer version packages could also works well on Xenial.
 * find out needed patches on newer version packages.
 * packport needed patches to older version packages on Xenial.

# environment information:

 * modinfo cdc_mbim for original kernel module: 
http://paste.ubuntu.com/24662359/
  - the code /driver/net/usb/cdc_mbim.c is the same between xenial kernel 4.4.0 
and yakkety kernel 4.8.0.

 * uname -r: 4.4.0-73-generic

 * lsusb -v: http://paste.ubuntu.com/24662332/

** Affects: modemmanager (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to modemmanager in Ubuntu.
https://bugs.launchpad.net/bugs/1693756

Title:
  [Xenial][ DW5816e] to support qmi over mbim which needed for FCC
  authentication.

Status in modemmanager package in Ubuntu:
  New

Bug description:
  # issue:
   * wwan card DW5816e[413c:81cc] couldn't be recognized by modemmanager 
1.4.12-1ubuntu1 on xenial.
    - but works well on on Yakkety.

  # investgation:
   * in failed case, mmcli -L shows nothing on Xenial with DW5816. Then tried 
install followed packages from Yakkety ppa on Xenial and wwan card works on 1st 
boot but failed after 2nd boot sometimes.
    - libmbim-glib4_1.14.0-1_amd64.deb
    - libmbim-glib-dev_1.14.0-1_amd64.deb
    - libmbim-proxy_1.14.0-1_amd64.deb
    - libmbim-utils_1.14.0-1_amd64.deb
    - libqmi-glib5_1.16.0-1_amd64.deb
    - libqmi-proxy_1.16.0-1_amd64.deb

   * different from ModemManager --debug
     - In passed case, it received message from /dev/cdc-wdm1 after send "Read 
max control message size from descriptors file: 4096" , but not happens to 
failed case. So, it prints "[mm-port-probe.c:261] 
mm_port_probe_set_result_qcdm(): (tty/ttyS4) port is not QCDM-capable" in 
failed case.
       - passed case: http://paste.ubuntu.com/24664908/
       - failed case: http://paste.ubuntu.com/24664910/

  # Plan:
   * let the newer version packages could also works well on Xenial.
   * find out needed patches on newer version packages.
   * packport needed patches to older version packages on Xenial.

  # environment information:

   * modinfo cdc_mbim for original kernel module: 
http://paste.ubuntu.com/24662359/
    - the code /driver/net/usb/cdc_mbim.c is the same between xenial kernel 
4.4.0 and yakkety kernel 4.8.0.

   * uname -r: 4.4.0-73-generic

   * lsusb -v: http://paste.ubuntu.com/24662332/

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/1693756/+subscriptions

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