** Also affects: oem-priority/xenial
Importance: Undecided
Status: New
** No longer affects: oem-priority/xenial
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https://bugs.launchpad.net/bugs/1693756
Title:
[Xenial][ DW5816e] to support qmi over mbim which needed for FCC
authentication.
Status in ModemManager:
New
Status in OEM Priority Project:
In Progress
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/
FCC authentication reference:
* http://lists.infradead.org/pipermail/lede-dev/2016-August/002332.html
*
https://lists.freedesktop.org/archives/libmbim-devel/2016-April/thread.html#704
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