Unable to make Internet connection with Option Globetrotter Fusion+ on Ubuntu 9.10

[Radoslaw]

This bug report is related to the bug report #425312. While that bug is about proper detecting of the modem with network-manager, you can find a lot of debugging of Internet connection reporting there, including syslog, network-manager and modem-manager debug logs. This bug report is continuation of debugging the modem connection issue.

[Radoslaw (radraw)]

Some things that can be said about current status of the connection issue after some testing:

1. It is not possible to connect using network-manager trhough Gnome nm-applet.

2. It is possible to connect from command line using pon, poff (see comments at bug #425312).

3. It is possible to connect with network-manager after downgrading nozomi driver to that from 2.6.28 kernel version

After some further testing it seems that the 2.6.28 version of nozomi driver is the last one that is working with network-manager, so it seems that the connection problem started after the following commit to the kernel driver:

 2009-01-02 Alan Cox tty: kref nozomi

(you can find it at: http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.32.y.git;a=history;f=drivers/char/nozomi.c;h=d3400b20444f4f726b7de49e6ff88a5aa78cc938;hb=a1092bf3809c7ec7b730d0cca3bdba964a813147)

The problem seems to be related to multiple open and close of nozomi tty port operations performed when using network-manager connection. I found that the attached patch allows to make Internet connection with network-manager work but when you don't use current ppa repository for network-manager and modem-manager (to make the modem appear in nm-applet you have to use some workaround for #425312 bug - restart modem-manager after inserting the modem card). Usually the connection doesn't work with first attempt, mostly with the second one, but it is the same like it worked with Ubuntu 9.04 (2.6.28 kernel).

This patch is experimental code that tries to bring back some former bechavior of nozomi kernel driver. Though it makes some resoult, it is not provided here as a fix.

[Radoslaw (radraw)]

Testing again with latest version of network-manager from PPA repository shows that Internet connections works (after applying the previously attached nozomi patch).

There is also Linux kernel bug registered at http://bugzilla.kernel.org/show_bug.cgi?id=13024 concerning the same issue and it seems that exactly the same fix for nozomi driver has been already proposed there.

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in linux.

When reporting bugs in the future please use apport, either via the appropriate application's "Help -> Report a Problem" menu or using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Stefan Bader (smb)]

For confirmation of the current status:

- Does Lucid work now? It should have gotten the patch mentioned and have that released.
- For Karmic, would the kernel at http://people.canonical.com/~smb/bug505330/ work? I applied the patch there and build those.

[Stefan Bader (smb)]

Feedback on the test kernel for Karmic should arrive soon. It won't get fixed after end of this week.

[Jeremy Foshee (jeremyfoshee)]

Radek,
      Can you comment on if this is resolved for the current crack of the day for Lucid based on Stefan's comments above? I'd like to update the status on this particular bug.

Thanks!

-JFo

[Radoslaw (radraw)]

I'm sorry, but I already don't have access to the modem, maybe somebody also could test it, and provide some feedback ?

[Franz Dietzmann (tdk-le)]

I am the original poster of # 425312. As I needed the connection, I switched back to jaunty for the time being. Today I just installed the lucid-daily and the card now is recognized and I can connect to my network. So for me, the problem is solved in Lucid.
This is for a Option Fusion+ with Qualcomm MSM6275 Chip.

[Jeremy Foshee (jeremyfoshee)]

Franz,
      Thank you for confirming that this is fixed for you in latest Lucid. I'll mark this bug as fix committed. Should anyone still encounter this issue, please set the status accordingly.

Thanks!

~JFo

[Stefan Bader (smb)]

Ok, as it is working in Lucid and we have closed down on Karmic normal updates, I mark this won't fix.