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Tasklist

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 B├Ąchler (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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