Hi Sebastien, Thanks for your review, there are some reasons to take the bumping version patch.
1. to verify which patches in libqmi is needed , it need a known worked modemmanager and libmbim (yakkety version) help, and there are version check both in configure and build dependency. 2. looks the bumping version action was took by upstream when a big change like this qmi-over-mbim. So, people might expect qmi-over-mbim should not be there before such version. So, I was confused about should I keep the bumped version there to keep this expectation synced. All patches were picked up by git bisect method in the environment setting of point 1, then install all backported packages together for a sanity check in final. And the decision to keep the version bumping was made based on point 2. In another side about why not just take whole new version: by roughly diff of libqmi, changed no. of lines of backport patches to xenial libqmi-glib1-1.12.6-1 1791 changed no. of lines of xenial libqmi-glib1-1.12.6-1 to yakkety libqmi 1.16.0-1 142332 And just taking new version would introduce more changes in libmbim and modemmanager which not related to qmi-over-mbim for DW5816 by just take yakkety libqmi 1.16.0-1. So, the idea is fewer changes might have higher SRU possibility. -- 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: 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/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
