Ethernet Controllers

Internal Ethernet controller

A variety of Ethernet controllers is integrated into almost all models starting with the introduction of the A, T and X series.

The Ethernet controller is located on either a MiniPCI card, Communications Daughter Card (CDC), or integrated on the systemboard.

3COM Fast Ethernet (10/100)

MiniPCI cards featuring this chip:

• 3Com 10/100 Ethernet Mini-PCI Adapter with 56K Modem

Intel Fast Ethernet (10/100)

CDC and MiniPCI cards featuring this chip:

• Ethernet Daughter Card (EDC)
• Intel 10/100 Ethernet Mini-PCI Adapter with 56K Modem
• Intel PRO/100 SP Mobile Combo Adapter
• Mini-PCI Ethernet card
• Xircom 10/100 EtherJet Mini PCI Adapter with 56K Modem

In addition, this chip is integrated into select systemboards of the following machines:
Intel 82550GY

• R30

Intel 82558

• SelectaBase PC Card Enabler with Advanced EtherJet
• ThinkPad Port Replicator with Advanced EtherJet

Intel 82562ET

• R31, R32
• T30
• X30

Intel 82562EZ

• R40, R50e, R50, R51
• T40
• X31

Driver: e100 (The 'e100' driver is the suggested driver, but 'eepro100' should also work.)

Intel Gigabit (10/100/1000)

Chipset: Intel PRO/1000 MT Mobile Ethernet
Driver: e1000

This chip is integrated into select systemboards of the following machines:
Intel 82540EP

• R50, R50p, R51
• T40, T40p, T41, T41p, T42, T42p
• X31, X32

Intel 82541GI

• X40

Intel 82573L (PCI-Express)

• T60, T60p
• X60, X60s

Note: There appear to be serious latency problems with the e1000 driver with 2.6.13 > kernels >= 2.6.17. To fix, try compiling version e1000-7.3.20 from the e1000 sourceforge project
Note: This chip supports Auto-MDIX, meaning you will never need a crossover ethernet cable.
Note: The first signs of explicit support for this chip in 2.6 kernels is with 2.6.12-rc2.
Note: Red Hat Enterprise Linux 3.0 (2.4 kernel based) begins 82573L support with Update 7.
Note: Some users report issues: Problem_with_e1000:_EEPROM_Checksum_Is_Not_Valid
Note: Some users have reported latency problems with e1000 driver. It seems, that switching off Interupt Throttle Rate (ITR) helps.
Note: Additional configuration options from Intel
Note: Another possibility is to use "RxIntDelay=5".

For Gentoo users - compile e1000 as a kernel module and add 'options e1000 InterruptThrottleRate=0,0' to /etc/modules.d/e1000

I had serious performance problems on Ubuntu Edgy (ca. 400 kb/s File transfer rate). I compiled version e1000-7.3.20 from http://sourceforge.net/projects/e1000/ and this solved my problem. All other hints above did not improve the file transfer performance (they did improve the ping latency) for me.

Broadcom Fast Ethernet (10/100)

Driver: tg3 or bcm5700

This chip is integrated into select systemboards of the following machines:
Broadcom BCM5901

• G40, G41
• R40e

Broadcom BCM5751F

• R51e

Broadcom Gigabit (10/100/1000)

Chipset: Broadcom BCM5751M
Driver: tg3 or bcm5700

This chip is integrated into select systemboards of the following machines:

• R52, R60
• G41
• T43, T43p
• X41, X41 Tablet
• Z60m, Z60t
• Z61m, Z61p

Note: There are some problems with the driver since kernel 2.6.17 (at least on a Z61p, Z61m). After an ifdown && ifup it doesn't work anymore. A possible workaround is to build the tg3-driver as a module and reload it when this problem occours. (Adding pre-up modprobe tg3 and post-down rmmod tg3 to the corresponding section in /etc/network/interfaces works fine.) Rebooting the machine would also be possible. This is fixed in kenel 2.6.19-rc5.

The T43 with a stock Linus 2.6.18.1 kernel does not have any problems.