My computer recently shutdown while I was out of batteries, and after I recharged it, the wireless and wired connections don't work anymore.
The wireless network is detected, connected to, and then shuts off after a few seconds. The wired network does the same thing. I didn't install updates or anything, now I just can't connect.
I've tried doing
sudo restart network-manager which brings back the connections for a few seconds until they die again. I did
sudo ifconfig eth0 up to make sure
eth0 was up. What should I do?