Network Manager - wired connection

Question

Hello.
At my dormitory I'm trying to automatize connecting to a local network. So far I've been
connecting to the network using this sequnce of commands:
$ sudo ifconfig eth0 up
$ sudo wpa_supplicant -Dwired -ieth0 -c /etc/kolejnet.conf -B
$ sudo dhcpcd eth0 up
It's kind of anoying.
I'm trying to get my Network Manager working but it seems that somewhere is a problem
but I don't know what it is. This is how is my file "/etc/NetworkManager/system-connections
/kolejnet" supposed to look like:
[802-3-ethernet]
duplex=full
mac-address=f0:de:f1:8:1a:a1
[connection]
id=kolejnet
uuid=3146f80e-9643-4de3-a037-6ef7e8adc888
type=802-3-ethernet
timestamp=1317798337
[ipv6]
method=auto
[802-1x]
eap=ttls;
identity="my username"
anonymous-identity=pizet
ca-cert=/etc/ssl/certs/vpn-sisal.pem
phase2-auth=pap
password="my password"
[ipv4]
method=auto
If everything is in here correct, what could the problem be?

Answer 1

The title says "have internet until ...", so apparently you have something else running to handle the connection. You can hope that NetworkManager will somehow find and kill this other network management tool, but a saner approach is to stop/kill it yourself before you start NM.
Note that I don't know much about steam, so there might be a better solution that allows you to continue to use your current tool (instead of NM).
And you should turn to the journal if you want to see log messages for NM.