I was not able to use the "sudo service network-manager restart" fix because I do not have a 'network-manager' script in /etc/init.d/. I only have a 'networking' script and calling 'restart' on that locks up the system hard. I am able to use the "sudo killall NetworkManager" workaround.
I started experiencing this same problem immediately after upgrading to saucy. Happens like clockwork every time my netbook wakes from suspend.
Hardware: MSI WIND U230
Ubuntu version: 13.10
Network driver: rt2800pci
I found a workaround on this thread: askubuntu. com/questions/ 362933/ network- disabled- on-some- wake-ups- on-saucy- laptop
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I was not able to use the "sudo service network-manager restart" fix because I do not have a 'network-manager' script in /etc/init.d/. I only have a 'networking' script and calling 'restart' on that locks up the system hard. I am able to use the "sudo killall NetworkManager" workaround.