[Beowulf] 3com isa and other ethernet adapter : no link

Gerry Creager N5JXS gerry.creager at tamu.edu
Fri Sep 3 23:51:58 EDT 2004


I've had significant problems in 2 flavors (SuSE and Redhat/Fedora) of 
Linux with the Asus nVidia on-board hardware.

Go into the bios.  Disable the on-board ethernet hardware.  Use the PCI 
card.  Should work fine from there.  While you're at it, disable the 
sound and other unneeded periperals.

Windows has the info on the Asus/nVidia API, which isn't readily or 
frequently released to the Linux world.

Alexandre Abbes wrote:
> Hello,
> I have a mysterious problem:
> I own 3 machines, 2 of theme have 3com 3c509B ethernet isa adapter, and the third has a 3com 3c905 pci ethernet adapter (and another included in the mptherboard which is an asus nvidia nforce one).
> 
> If I try to link the to machines with 3c509 isa adapter, I have no problem, machines can talk through the cable.
> 
> But If I try to link one of these two machines with the third, connecting it to the 3com 3c905 pci or to the nvidia adaper, I cannot get any link. As a matter of fact, the green led of the pci adapter or the nvidia one does not light up when I plug the crossed cable in.
> 
> This happens only if I boot on linux (the machine with 3com isa adapter and the other). But if I boot my machine with isa athernet adapter with window$98, then I get the link.
> 
> Other problem, which is related to the latter : I have an ADSL bewan ethernet modem, which does not get any link with the 3com is adapters, but works well with the 3com pci or nvidia adapter. On window$98 I always get the link. Then if I make a soft reboot, I keep it, and I can get my adsl connection to the internet.
> 
> 
> I have disabled the plugnplay option with the 3com tool on the 3c509B. I know I don't have any interrupt problem, since I can get the line with another machine.
> 
> If anybody has an idea for help, I thank him/her to tell me what he/she thinks of this mystery.
> 
> Alexandre Abbes
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Network Engineering -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
Page: 979.228.0173
Office: 903A Eller Bldg, TAMU, College Station, TX 77843

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