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R5F1 forcedeth reports invalid MAC addr on GeForce6100SM-M
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Author:  RexJolliff [ Sat Jul 07, 2007 8:27 pm ]
Post subject:  R5F1 forcedeth reports invalid MAC addr on GeForce6100SM-M

I am building a low profile machine to use as a MythTV machine and I chose the EliteGroup GeForce6100SM-M motherboard. WHile working on getting a USB ethernet adapter to work, I would seem to lose the wired ethernet configuration on each reboot. It turns out that the device name was being reassigned by udev on each reboot because the MAC address was invalid (or at least the kernel thought it was) and was being replaced by a random MAC address. This appears to be due to a bug in the driver where it does not correctly identify that the MAC address is stored in the NVRAM in reverse order.

The 'fix' I found was to edit the persistant_net rules file to assign any card with the nForce network chipset to the name eth0. This will not work for machines with more than one interface of this type, but it will work for me until someone fixes the driver.

Edit /etc/udev/rules.d/z25_persistent-net.rules
[you will find multiple entries for the interface, remove all but one, and
make it look like this.]

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="forcedeth", NAME="eth0"

Now back to more fruitless attempts at making the wireless work...

Rex

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