View Full Version : [ubuntu] Realtek RTL8101E/RTL8102E doesn't detect 1000Mbps

January 5th, 2010, 02:44 PM

I'm trying to configure the following network card to work with a 1000Mbps switch:

04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 01)

I think the problem is the network card module. When I run
ethtool eth0 nothing of 100Mbps is showed:

root@anubis:/home/alasarr# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
Link detected: yes

I've installed the latest driver that I've found but the problem persist:

This driver was updated 2009/11/17 so It's not very old

Any ideas??

Thanks Alberto

January 5th, 2010, 02:53 PM
is it posible the card was not gigabit??

March 2nd, 2012, 02:22 PM
I am having the same problem. It seems that RTL8101E/RTL8102E is only a 10/100 adapter: