3C905B - 3c59x

[Jeffrey Ross]

I have an older PIII system loaded with Fedora Core 4.  I have been 
trying unsuccessfully to enable the ethernet interface as 100Mb Full 
duplex and have had no luck at doing so. 

What I have done so far:

1) Let autonegotiate run its course, I get 10Mb half duplex
2) run ethtool -s eth0 speed 100 duplex full.  still 10Mb half duplex 
even though ethtool tells me otherwise
3) set the switch port to 100Mb Full duplex and restart the machine, no 
connectivity at all
4) modified the /etc/modprobe.conf file to read the following: alias 
eth0 3c59x options=0x204 and ran depmod -ae reloaded but still 10Mb half 
duplex.

What I have noticed is after the machine completes its POST I immediate 
have a link on the ethernet port at 10meg half duplex.  Attached is the 
output from lspci -v

The interface works reliably at 10meg half duplex, suggestions?

thanks, Jeff

00:0e.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] 
(rev 6c)
        Subsystem: 3Com Corporation 3C905C-TX Fast Etherlink for PC 
Management NIC
        Flags: bus master, medium devsel, latency 80, IRQ 11
        I/O ports at 1080 [size=128]
        Memory at f4000000 (32-bit, non-prefetchable) [size=128]
        [virtual] Expansion ROM at 20000000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2