Having the similar issue with Ericsson H5321gw in Toshiba Z830. SIM registers to network, but than fails to connect most of the tries(like 1success to 30 failures). I tried the solution in 2), after reboot I connected from the first try, but after that I have not be able to get connection. I see the driver used in my case is cdc_acm - cna this be the reason?
-- 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/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: Confirmed Status in “modemmanager” package in Ubuntu: Invalid Status in “linux” package in Debian: Fix Committed 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." 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://web.archiveorange.com/archive/v/dbmrrKybrWTJ0XZGsB3B http://lists.debian.org/debian-kernel/2013/03/msg00611.html See also bug #1102343. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1169117/+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
