wifi rescan problem (nm-applet) system won't restart

[regmee]

This wifi problem has been the biggest pain with Ubuntu so far.
Its been quite a while that I have been living with this problem of nm-applet
where the applet starts a re-scan just like that. Now all of a sudden the applet
freezes and if I don't do anything for a long time I can't even open up new
applications. I can just close the opened apps.

I come across this thread:
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/154549

When I do a reboot after the applet starts the re-scan then it works sometimes.
But when I do a reboot after the applet FREEZES it wouldn't even restart.

More often restart gets stuck at:

    * stopping GNOME display manager ...
    * stopping Avahi mDNS/DNS-SD Daemon avahi-daemon
        Failed to kill daemon: Timer Expired

    * stopping DHCP D-Bus daemon dhc [failed]
    .....
    .....

    * stopping samba daemon (may b different) [ok]
    * stopping wifi-radar daemon

Nothing happens after this. When I press CTRL+ALT+DEL the same sequence repeats
from GNOME display manager ... till the wifi-radar

I don't really understand why the applet does a re-scan when a windows machine
in the same room is doing just fine. I can't say for sure, but the problem seems
to be due to the DHCP daemon [failed].

I have included my /var/log/syslog also.

It really breaks my heart when I have to power down my machine using the power
button :(( .........

- regmee

[Andrew Starr-Bochicchio (andrewsomething)]

Thanks for your report. What version of Ubuntu are you using? When the applet first freezes, can you use CTRL+ALT+Backspace to restart your x-session or does that not work either?

[regmee (regmi-amit)]

I am using Ubuntu 7.10 Gutsy Gibbon. CTRL+AlT+Backspace also won't help.

[regmee (regmi-amit)]

a closer look reveals that it's the "Avahi mDNS/DNS-SD Daemon" that's not getting stopped.

* stopping GNOME display manager ...
    * stopping Avahi mDNS/DNS-SD Daemon avahi-daemon
        Failed to kill daemon: Timer Expired [failed]

    * stopping DHCP D-Bus daemon dhc [OK]
    .....
    .....

    * stopping samba daemon (may b different) [ok]

[Basilio Kublik (sourcercito)]

Hi there
do you still experience this issue with the current version of the application?, could you please try to reproduce this using the live environment of the Desktop CD of the development release - Hardy Heron.

Thanks in advance

[Pedro Villavicencio (pedro)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!.