In my laptop system with one wifi card (ipw2200) and one ethernet card (both built in), I think the problem is caused by changing interface names: After system boot, the network devices are named eth2 and eth3, eth0 and eth1 don't exist. Network Manager works. After a suspend, the devices are called eth0 and eth1, so Network Manager doesn't find them anymore. I can still configure the renamed devices using ifconfig and iwconfig. Restarting Network Manager doesn't have any effect. The packages network-manager and network-manager-gnome don't contain init scripts at all, btw. Therefore I can restart Network Manager only by killing and restarting the processes manually. The problem may be related to Udev, I suppose.
-- NetworkManager can't find interface on resume from suspend https://launchpad.net/bugs/45696 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
