[CentOS] Troubles with NetworkManager

ABBAS KHAN bashukhan at gmail.com
Sun Sep 7 15:42:35 UTC 2008


NetworkManager used to work fine for me but during the last few
installations its a big hurdle in the wireless connectivity.
I'm using Madwifi and its interface is correctly listed and working but I
cannot connect to any wifi AP without NetworkManager. I've two interfaces:
eth0 and wifi0. Starting NetworkManager doesn't show any notification icon
in the top right in gnome and I believe its only activating the ath0 instead
of wireless interface wifi0 but still I am unable to see any of the
notification icon in the gnome as I was used to in past for any of the NICs.
The error which I recieve upon logging into the gnome is:

"The NetworkManager applet could not find some required resources. It cannot
conitnue".

But still, there are no errors in the syslogs besides the below ones
particularly *"localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down*".

Thanks in advance for the helpout.





[root at localhost abbask]# grep -A 2 -B2 NetworkManager /var/log/messages |
tail -60
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 1 of 5 (Device Prepare) started...
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 2 of 5 (Device Configure) scheduled...
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 1 of 5 (Device Prepare) complete.
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 2 of 5 (Device Configure) starting...
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 2 of 5 (Device Configure) successful.
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 3 of 5 (IP Configure Start) scheduled.
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 2 of 5 (Device Configure) complete.
Jan 15 05:35:31 localhost NetworkManager: <information> Activation (eth0)
Stage 3 of 5 (IP Configure Start) started...
Jan 15 05:35:31 localhost dhclient: wifi0: unknown hardware address type 801
Jan 15 05:35:31 localhost dhclient: wifi0: unknown hardware address type 801
--
Jan 15 05:35:31 localhost NET[6581]: /sbin/dhclient-script : updated
/etc/resolv.conf
Jan 15 05:35:31 localhost dhclient: bound to 13.13.13.4 -- renewal in 1581
seconds.
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Beginning DHCP transaction.
Jan 15 05:35:32 localhost dhclient: wifi0: unknown hardware address type 801
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 3 of 5 (IP Configure Start) complete.
Jan 15 05:35:32 localhost NetworkManager: <information> DHCP daemon state is
now 12 (successfully started) for interface eth0
Jan 15 05:35:32 localhost NetworkManager: <information> DHCP daemon state is
now 1 (starting) for interface eth0
Jan 15 05:35:32 localhost dhclient: wifi0: unknown hardware address type 801
Jan 15 05:35:32 localhost avahi-daemon[5154]: New relevant interface
eth0.IPv6 for mDNS.
--
Jan 15 05:35:32 localhost dhclient: DHCPREQUEST on eth0 to
255.255.255.255port 67
Jan 15 05:35:32 localhost dhclient: DHCPACK from 13.13.13.3
Jan 15 05:35:32 localhost NetworkManager: <information> DHCP daemon state is
now 4 (reboot) for interface eth0
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 4 of 5 (IP Configure Get) scheduled...
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 4 of 5 (IP Configure Get) started...
Jan 15 05:35:32 localhost dhclient: bound to 13.13.13.4 -- renewal in 1438
seconds.
Jan 15 05:35:32 localhost dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.host_name
--
Jan 15 05:35:32 localhost dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_domain
Jan 15 05:35:32 localhost dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_servers
Jan 15 05:35:32 localhost NetworkManager: <information> Retrieved the
following IP4 configuration from the DHCP daemon:
Jan 15 05:35:32 localhost NetworkManager: <information>   address 13.13.13.4
Jan 15 05:35:32 localhost NetworkManager: <information>   netmask
255.255.255.0
Jan 15 05:35:32 localhost NetworkManager: <information>   broadcast
13.13.13.255
Jan 15 05:35:32 localhost NetworkManager: <information>   gateway 13.13.13.3
Jan 15 05:35:32 localhost NetworkManager: <information>   nameserver
13.13.13.3
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 5 of 5 (IP Configure Commit) scheduled...
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 4 of 5 (IP Configure Get) complete.
Jan 15 05:35:32 localhost NetworkManager: <information> Activation (eth0)
Stage 5 of 5 (IP Configure Commit) started...
Jan 15 05:35:32 localhost avahi-daemon[5154]: Withdrawing address record for
13.13.13.4 on eth0.
Jan 15 05:35:32 localhost avahi-daemon[5154]: Leaving mDNS multicast group
on interface eth0.IPv4 with address 13.13.13.4.
--
Jan 15 05:35:33 localhost dnsmasq[5162]: reading /etc/resolv.conf
Jan 15 05:35:33 localhost dnsmasq[5162]: using nameserver 13.13.13.3#53
Jan 15 05:35:33 localhost NetworkManager: <information> Activation (eth0)
successful, device activated.
Jan 15 05:35:33 localhost NetworkManager: <information> Activation (eth0)
Finish handler scheduled.
Jan 15 05:35:33 localhost NetworkManager: <information> Activation (eth0)
Stage 5 of 5 (IP Configure Commit) complete.
Jan 15 05:35:35 localhost avahi-daemon[5154]: New relevant interface
eth0.IPv6 for mDNS.
Jan 15 05:35:35 localhost avahi-daemon[5154]: Joining mDNS multicast group
on interface eth0.IPv6 with address fe80::21c:c0ff:fe4f:f2cf.
--
Jan 15 05:35:35 localhost dnsmasq[5162]: using nameserver 13.13.13.3#53
Jan 15 05:35:35 localhost avahi-daemon[5154]: Registering new address record
for fe80::21c:c0ff:fe4f:f2cf on eth0.
Jan 15 05:37:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:39:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:41:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:43:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:45:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:47:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
Jan 15 05:49:11 localhost NetworkManager: <WARNING>
nm_device_802_11_wireless_scan (): could not trigger wireless scan on device
ath0: Network is down
[root at localhost abbask]#
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