network manager using all of cpu

[Lucas Dixon]

Binary package hint: gnome-panel

After going to sleep while connected to a wireless network, when waking up the machine in a location without that network available, the gnome NetworkManager starts to use 100% of a cpu, and claims to still be connected to the old network. This is in Ubuntu 7.10, Gutsy Gibbon. For some reason there is no associated package for this... ?

ProblemType: Bug
Architecture: i386
Date: Tue Oct 23 20:55:37 2007
DistroRelease: Ubuntu 7.10
ExecutablePath: /usr/bin/gnome-panel
Package: gnome-panel 1:2.20.0.1-0ubuntu6
PackageArchitecture: i386
ProcCmdline: gnome-panel --sm-client-id default1
ProcCwd: /home/ldixon
ProcEnviron:
 PATH=/home/ldixon/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-panel
Uname: Linux luki 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux

[Thomas Reuss (thomas-reuss)]

Similar problem here:
I am using a WPA2 wireless network. When I put my notebook to suspend/hibernate, NetworkManager will freeze the system when waking up again.
As a workaround, it helps to restart NetworkManager via "/etc/dbus-1/events.d/25NetworkManager restart"

[Håvard Gulldahl (havard)]

I'm seeing the same thing, only my desktop system has not been asleep, just inactive for some time.

The applet claims to be connected to a wlan with an ESSID of '(unknown)'. There are no available networks in the network list, and the cpu is spinning at 93%-99%. My network uses WPA2 authentication.

FWIW, I've seen the same error both on KDE (KNetworkManager -- upgraded from Feisty) and Gnome (freshly installed).

Is there any way to provide something (e.g logs) that will help track this down?

[deepdraft (dimitar.nedev)]

I have the same problem. NetworkManager eats up most of the CPU and after some time the system becomes quite slow.
If I kill it with killall -9 NetworkManager and start it again it is OK. But this has happened to me several times already!

I am running Kubuntu 7.10 (with all updates up to today 2007-11-23) on a Dell Latitude D510. My wireless card is Intel PRO/Wireless 2200BG and my LAN adapter is Broadcom 440x.

I have found several similar bugs in Launchpad and it seems that they are all related to NetworkManager problems after system suspend and/or wireless.
Well it seems none of them was seriously evaluated so far. Here is a small list:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/164178
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/158338
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/154254
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/162383