Re: Does anyone understand NetworkManager?

[David Abrahams <dave boost-consulting com>]

Darren Albers <dalbers <at> gmail.com> writes:

> 
> On 8/18/06, David Abrahams <dave <at> boost-consulting.com> wrote:
> > David Abrahams <dave <at> boost-consulting.com> writes:
> >
> > >> I note that when I disconnect a network cable I see the following:
> > >>
> > >>   ** (nm-applet:6496): WARNING **: <WARNING>
> > >>      nm_dbus_send_with_callback_replied (): Error: couldn't find
> > >>      pending call 0x829ed88 in tracking table.
> 
> > and finally,
> >
> > 1. it seems as though I can always reconnect reliably by doing
> >
> >       sudo /etc/init.d/dbus restart
> >
> > 2. I have two access points on this network with the same SSID.
> >    Sometimes it will connect to the one that's further away, so the
> >    reception is weak.  That happens under Windows, too, FWIW.
> 
> Is there anything dbus related in /var/log/syslog that might show the
> problem?  It is very interesting that you have to restart dbus to
> connect.

Nothing very definitive.  I see:

Aug 19 07:53:26 localhost NetworkManager: <debug info>^I[1155988406.181995]
nm_dbus_signal_filter (): NetworkManagerInfo triggered update of wireless
network 'peloton'
Aug 19 07:53:37 localhost kernel: [17182542.860000] eth1: no IPv6 routers present

but that's during a connection attempt that /works/!
Are you aware that NetworkManager runs under dbus on ubuntu?

  One last step. NetworkManager from CVS tries to start
  itself from a script in /etc/init.d. For some reason,
  this does not work very well. Instead, NetworkManager
  on Ubuntu works better when it is started directly by dbus.


http://www.ubuntuforums.org/showthread.php?p=1375266#post1375266

Some more data: if there's an unencrypted network around, I can always connect
to that.  If I subsequently try to connect to my encrypted network, it works. 
To my untrained eye, it looks like when things don't work, NM isn't actually
listening for the PSK, because things stop right about here:

Aug 19 07:51:47 localhost NetworkManager: <information>^IActivation (eth1) New
wireless user key requested for network 'peloton'.
Aug 19 07:51:47 localhost NetworkManager: <information>^IActivation (eth1) Stage
2 of 5 (Device Configure) complete.
Aug 19 07:51:47 localhost kernel: [17182432.988000] ADDRCONF(NETDEV_UP): eth1:
link is not ready

--
David Abrahams
Boost Consulting
http://www.boost-consulting.com