HOWTO enable Broadcom BCM57780 ethernet chip
 

I recently got myself a shiny new toy, a 14" notebook, and installed
Gentoo (naturally). The biggest struggle was getting the Broadcom
BCM57780 ethernet chip recognized. For the benefit of anybody else who
runs into problems, here is the step-by-step solution...

as root...
cd /usr/src/linux
make menuconfig
Device Drivers --->[*] Network device support --->
-*- PHY Device support and infrastructure --->
<*> Drivers for Broadcom PHYs[*] Ethernet (1000 Mbit) --->
<*> Broadcom Tigon3 support

save .config, rebuild kernel, and reboot. Ethernet works fine.

--
Walter Dnes <waltdnes@waltdnes.org>