freedesktop upstream[1] rejected the backport operation and suggest user to add another maintainer's ppa instead: https://launchpad.net/~aleksander-m/+archive/ubuntu/modemmanager-xenial
[1] https://bugs.freedesktop.org/show_bug.cgi?id=101386 ** Bug watch added: freedesktop.org Bugzilla #101386 https://bugs.freedesktop.org/show_bug.cgi?id=101386 -- You received this bug notification because you are a member of Desktop 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: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/modemmanager/+bug/1693756/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp