Ubuntu
linux package

Huawei E620/EM770 not working: Network Manager switches 3G modem radio off at boot

Bug #700627 reported by Giuseppe Morale
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Undecided
Unassigned

Bug Description

Binary package hint: network-manager

I have an Asus laptop with integrated 3G modem, which works perfectly fine in Windows7.
I am running Ubuntu 11.04 Alpha 1 64bit fully updated with kernel 2.6.37-12-generic.
network-manager version: 0.8.3+git.20101219t181118.e919218-0ubuntu1
At boot NetworkManager disables WWAN by radio killswitch unprompted and right after enabling it.
Attached there is a copy of the portion of syslog.
It is not possible to enable the hardware radio once the system has booted and therefore establishing a connection with said modem is not available, or it is available but in fact it is not possible because of no radio, no signal, no registration to network etc.
The hardware is Haewei E620 according to lsusb, and Haewei EM770 according to AT+GMM
Acpi4asus has implemented a patch for the radio issue of the aforementioned hardware and it was merged into mainline:
http://dev.iksaif.net/issues/108.
The file /sys/devices/platform/asus_laptop/wwan still reports status 1.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: network-manager 0.8.3+git.20101219t181118.e919218-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic x86_64
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Jan 9 11:20:13 2011
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
IpRoute:
 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.2 metric 2
 169.254.0.0/16 dev wlan0 scope link metric 1000
 default via 192.168.0.1 dev wlan0 proto static
Keyfiles: Error: [Errno 2] No such file or directory
ProcEnviron:
 LANGUAGE=en_GB.UTF-8:en
 LANG=en_GB.UTF-8
 LC_MESSAGES=en_AG.utf8
 SHELL=/bin/bash
SourcePackage: network-manager

Revision history for this message
Giuseppe Morale (giuseppe-morale) wrote :
Revision history for this message
Mathieu Trudel-Lapierre (cyphermox) wrote :

Before trying to connect the mobile session, can you please check the following two items?

 - Verify that /var/lib/NetworkManager/NetworkManager.state does not show "false" somewhere.
 - Verify that the output of "rfkill list" does not list items as blocked ('yes' at the end of a line)

Thanks in advance!

summary: - Network Manager switches 3G modem radio off at boot
+ Huawei E620/EM770 not working: Network Manager switches 3G modem radio
+ off at boot
Changed in network-manager (Ubuntu):
status: New → Incomplete
Revision history for this message
Pr0ph3t (sakrestia-prophet) wrote :

Hi, the file NetworkManager.state has WWAN=true, but at startup on nm-applet mobile broadband is not enabled. The WWAN modem is not listed in the rfkill list, only WIFI and Bluetooth are.

Regards

Revision history for this message
Giuseppe Morale (giuseppe-morale) wrote :

With the help of Corentin Chary at acpi4asus I've managed to start the radio at boot by adding the line:
asus_laptop.wwan_status=1

as a kernel command in GRUB. This switches the radio on at boot and leaves it on ready for connection.

Thanks

Changed in network-manager (Ubuntu):
status: Incomplete → In Progress
assignee: nobody → Giuseppe Morale (giuseppe-morale)
Revision history for this message
Giuseppe Morale (giuseppe-morale) wrote :

Also I used a newer asus-laptop.c and not the standard one which comes with the kernel. I downloaded the file from http://git.iksaif.net/?p=acpi4asus.git;a=shortlog;h=refs/heads/asus-laptop for this specific hardware and followed the instructions at http://dev.iksaif.net/projects/acpi4asus/wiki/Backport_module to load it. Thanks to the guys at acpi4asus for their great work and support.

Revision history for this message
Mathieu Trudel-Lapierre (cyphermox) wrote :

Great, that's good news. Since this proves it's an issue at the kernel driver level, reassigning to the 'linux' package.

This might need convincing the acpi4asus people to submit their latests work to the kernel, not sure of all the details there though ;)

Revision history for this message
Mathieu Trudel-Lapierre (cyphermox) wrote :

Also, Giuseppe, please don't assign the bug to yourself unless you're a developer and plan to actively work on integrating the fixes.

affects: network-manager (Ubuntu) → linux (Ubuntu)
Changed in linux (Ubuntu):
assignee: Giuseppe Morale (giuseppe-morale) → nobody
status: In Progress → New
Revision history for this message
Jeremy Foshee (jeremyfoshee) wrote :

Hi Giuseppe,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

tags: added: needs-upstream-testing
tags: added: kj-triage
Changed in linux (Ubuntu):
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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