Estoy usando Ubuntu 12.04, recientemente compré un adaptador de USB a Ethernet.
El comando dmesg muestra el modelo como "Davicom DM9601 USB Ethernet". No puedo usar ethtool para modificar ninguna de sus configuraciones.
jesin@localhost:~$ sudo ethtool eth1
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
Cuando intento cambiar la velocidad del adaptador a 10 Mbps, aparece
jesin@localhost:~$ sudo ethtool -s eth1 speed 10
Cannot advertise speed 10
Ni siquiera puedo cambiar el tipo de puerto.
jesin@localhost:~$ sudo ethtool -s eth1 port tp
Cannot set new settings: Invalid argument
not setting port
Que esta causando este problema ?
Información adicional:
jesin@localhost:~$ sudo ethtool --version
ethtool version 3.1
jesin@localhost:~$ uname -r
3.2.0-39-generic