Ubuntu
network-manager package

  1. Bug #124706
  2. Comment #5

Comment 5 for bug 124706

Revision history for this message
Jens Gersdorf (jens-gersdorf) wrote : Re: NM sometimes drops connection before associating, logfile says assertion `dev != NULL' failed

I encountered this bug in Gutsy Gibbon.

When I just boot my notebook, I often see the following happen:

* 1.) Trying to connect to WLAN, but then I'm being asked for the WPA Key, although this key is already stored in the key chain.
In the logfile, I see the following:
....
Dec 16 11:29:09 jens-laptop NetworkManager: <info> Activation (eth1/wireless): access point 'DSLWLANXQRZ' is encrypted, and a key exists. No new key needed.
....
Dec 16 11:29:36 jens-laptop NetworkManager: <info> Activation (eth1/wireless): disconnected during association, asking for new key.
Dec 16 11:29:36 jens-laptop NetworkManager: <info> Activation (eth1) New wireless user key requested for network 'DSLWLANXQRZ'.
....

* 2.) I cancel the dialog asking me for a new key.
...
Dec 16 11:30:26 jens-laptop NetworkManager: <info> Activation (eth1) New wireless user key request for network 'DSLWLANXQRZ' was canceled.
...

* 3.) I try again to connect to the network. For some milliseconds I think it is now working, but then again I am disconnected. For some reason NetworkManager thinks the connection is no longer valid???
....
Dec 16 11:30:29 jens-laptop NetworkManager: <info> Activation (eth1/wireless): access point 'DSLWLANXQRZ' is encrypted, and a key exists. No new key needed.
...
Dec 16 11:30:50 jens-laptop NetworkManager: <info> Activation (eth1/wireless) Stage 2 of 5 (Device Configure) successful. Connected to access point 'DSLWLANXQRZ'.
....
Dec 16 11:31:07 jens-laptop NetworkManager: <info> Activation (eth1) successful, device activated.
Dec 16 11:31:07 jens-laptop NetworkManager: <debug> [1197801067.245940] nm_dbus_signal_filter(): NetworkManagerInfo triggered update of wireless network 'DSLWLANXQRZ'
Dec 16 11:31:07 jens-laptop NetworkManager: <info> SWITCH: terminating current connection 'eth1' because it's no longer valid.
Dec 16 11:31:07 jens-laptop NetworkManager: <info> Deactivating device eth1.
Dec 16 11:31:08 jens-laptop NetworkManager: nm_device_is_802_3_ethernet: assertion `dev != NULL' failed
Dec 16 11:31:08 jens-laptop NetworkManager: nm_device_is_802_11_wireless: assertion `dev != NULL' failed

* 4.) Again I force the NetworkManager to connect to my WLAN, and now everything works fine.

Network Manager is using the following driver on my notebook.
Dec 16 11:28:38 jens-laptop NetworkManager: <info> eth1: Device is fully-supported using driver 'ipw3945'.

Find attached the complete log of NetworkManager.