Eth0 doesn't show after upgrade to 2.6.38.4or5 kernel (Arch)
 

Hi,
I've recently upgraded Arch kernel on my laptop to 2.6.38.4 and after reboot I found out that eth0 is missing in ifconfig -a (it only showed lo and wlan0). The same issue is in 2.6.38.5 that came out just couple of days ago. Any idea what can be causing this? What info should I add?

Output of lspci:
02:0e.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)

Greetingz!

Sounds like you're either a) not loading a module for the NIC card, or b) you don't have compiled-in support for said NIC card.

Boot off the old kernel and do an "lsmod | sort -u | tee -a ~/modules_old".
Boot off the new kernel and do "lsmod | sort -u | tee -a ~/modules_new", followed by a "diff ~/modules_old ~/modules_new"

At that point, try "insmod modulename" and see if you get lucky. :)