I tried the command
ethtool -s eth0 speed 1000
, but ethtool eth0 tells me the following (before and after using ethtool -s...):
Settings for eth0:
Supported ports: [ MII ]
Supported link modes: 10baseT/Half 10baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
Advertised auto-negotiation: Yes
Link detected: yes
Did I use the wrong command?
I know definitely thet card and port are able to do gigabit. Could it be that one of it is broken?