FS#30374 - [linux] 3.4.3 Sierra Wireless 3G USB Modem stopped working with recent kernel

Attached to Project: Arch Linux
Opened by Heinrich Siebmanns (Harvey) - Wednesday, 20 June 2012, 07:54 GMT
Last edited by Andrea Scarpino (BaSh) - Saturday, 28 July 2012, 09:13 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture All
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
I have a Fujitsu Lifebook E751vPro with an integrated 3G USB Modem. This used to work flawlessly with kde, networkmanager, modemmanager and kdeplasma-applets-networkmanagement. Now I upgraded my laptop with pacman -Syu and mobile broadband connections don't show up anymore in kdeplasma-applets-networkmanagement. I have all testing repos enabled.

on my x86_64 system installed:

linux 3.4.3-1

kdeplasma-applets-networkmanagement 1:0.9.0.2-1
networkmanager 0.9.4.0-6
networkmanager-dispatcher-openntpd 1.0-3
networkmanager-dispatcher-sshd 1.0-2
networkmanager-openvpn 0.9.4.0-1
modemmanager 0.5.2.0-2
mobile-broadband-provider-info 20120614-1

For additional info see: https://bbs.archlinux.org/viewtopic.php?id=143506
This task depends upon

Closed by  Andrea Scarpino (BaSh)
Saturday, 28 July 2012, 09:13 GMT
Reason for closing:  Fixed
Additional comments about closing:  linux 3.4.5
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 08:36 GMT
Still valid with todays update to kdeplasma-applets-networkmanagement 1:0.9.0.3-1. No ideas?
Comment by Jelle van der Waa (jelly) - Thursday, 21 June 2012, 08:46 GMT
Pin down if its a kernel issue or not
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 09:42 GMT
Sigh. But how can I? It simply stopped working and I thought I'd let someone know (Of course I oped that it would be repaired that way)
I searched the web and the arch forums, believe me. Besides the cited part of the changelog to kernel 3.4.3 I found nothing related to my problem AFAICT. And they talked about an Aircard 320U++ while mine is one of these:
https://www.sierrawireless.com/productsandservices/AirPrime/Wireless_Modules/High-speed/MC8305.aspx

I will provide additional infos gladly, but I'm no coder, I'm a user. Without any additional help I am at an end here.
Comment by Jelle van der Waa (jelly) - Thursday, 21 June 2012, 09:55 GMT
You could downgrade your kernel and check if it works
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 10:18 GMT
jelly,
thanks for opening my eyes for the obvious. To my shame I have to admit that I didn't even think of this...
So I downgraded to 3.3.8 and guess what? It works again. This definitely is a kernel bug. This said, how can I manage to drive their attenton to it without killing me for posting on the wrong list/ to the wrong person?
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 10:34 GMT
I tried to contact the guy that was mentioned in the commit to 3.4.3. Hope he will here my voice...
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 12:01 GMT
I am in touch with the right person, it seems. Will report any news.
Comment by Heinrich Siebmanns (Harvey) - Thursday, 21 June 2012, 12:45 GMT
Wow, that was fast! Already fixed and hopefully will go into the next release. You can circumvent this by blacklisting module qmi_wwan which gets bound to the third modem interface accidently.
Comment by Heinrich Siebmanns (Harvey) - Saturday, 28 July 2012, 09:10 GMT
Fiexed with kernel 3.4.5 and 3.5

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