Comment 45 for bug 1539634

This hit me 1 hour ago after i had a pwer down because i forgot to link the power cable. After reboot i had no network at all. I had no symbol in the header bar. "rfkill list all" shows all blocked. manually starting "service network-manager restart" not wirked with an exception. After searching alsmost one hour for the problem i looked in

> cat /var/log/syslog

and search then for the logged error in google with

ubuntu networkmanager general protection

this bug. Now with

> ifconfig wlan0 up

and

> ifconfig eth0 up

and

> dhclient

it worked. Then i did an

> apt-get update and apt-get upgrade

while that the networkmanager comes back to life and the symbol comes back to life.