At this time, I think it is better to introduce MBIM support in Ubuntu as the support in Modemmanager is already there. See bug #1102343 and #1123302.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1169117 Title: REGRESSION: MBIM kernel suppport should be disabled until userspace support available (breaks Ericsson H5321 etc.) Status in The Linux Kernel: Fix Released Status in “linux” package in Ubuntu: Triaged Status in “modemmanager” package in Ubuntu: Invalid Status in “linux” package in Debian: Invalid Bug description: "commit bd329e1 ("net: cdc_ncm: do not bind to NCM compatible MBIM devices") introduced a new policy, preferring MBIM for dual NCM/MBIM functions if the cdc_mbim driver was enabled. This caused a regression for users wanting to use NCM." For background on this change please see Bug #1102343. This could be solved in different ways: 1) Remove "cdc_mbim.ko" from packages like linux-image-extra-3.8.0-XX-YY. Easy, but makes it harder for people to experiment with MBIM and add userspace support 2) Set the kernel parameter "prefer_mbim" to false for "cdc_ncm" module. This could be done by adding a file "/etc/modprobe.d/avoid-mbim.conf" with content: options cdc_ncm prefer_mbim=N This will allow people wanting to test MBIM easy access by removing or editing the file. Then the question is if this file should stay in modemmanager package or maybe in the kernel package? The required code for this option to exist seems to be in Ubuntu Raring packages in commit 04188f3010f64ddf2c75c3f4953eee9bdb4f5cc1. 3) Debian has solved it by patching the kernel to reverse the default to be not to use MBIM: http://lists.alioth.debian.org/pipermail/kernel-svn-changes/2013-March/018852.html http://lists.debian.org/debian-kernel/2013/03/msg00611.html WORKAROUND: Add in /etc/modprobe.d/cdc_ncm.conf : options cdc_ncm prefer_mbim=N To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1169117/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp