On Wed, 2 Jan 2008, Stephen John Smoogen wrote:

> On Jan 2, 2008 4:29 PM, Peter Ruprecht <ruprech@(protected):
> >
> > Hi,
> >
> > Has anyone tried RHEL5 with a Sun Ultra-40 workstation? I just upgraded
> > one from RHEL4 but now the onboard network interfaces aren't being seen.
> > The U40 has an nvidia chipset and ethernet, and the forcedeth driver
> > seemed to work fine with it under RHEL4.
> >
> > Now, however, even lspci doesn't show any sign of ethernet interfaces.
> > I'm pretty confident that the hardware didn't suddenly stop working, as
> > the LAN is still enabled in the BIOS and the link light comes on when I
> > plug in the ethernet cable. I'm using the latest BIOS from Sun.
> >
> > I installed the latest kernel (2.6.18-53.1.4) via thumb drive, but that
> > seems not to have helped at all. Nor has a full "yum update", which I
> > could complete after adding a 3com PCI ethernet card.
> >
> > There's at least one existing bugzilla (420361) suggesting problems
> > with nvidia components and RHEL5, but in that case the issue seemed to
> > be with nv_sata.
> >
> > Any ideas what to look at next? I can post whatever logs or other info
> > might be useful. I'll open a bug if there doesn't seem to be some
> > obvious thing I'm missing.
> >
>
> I am guessing it is an APIC issue as not seeing hardware on the PCI
> bus is awfully funny.
>
> The first thing to try is the brute force thing with the kernel options
>
> noapic nolapic
>
> and see if that works. After that.. it seems that people have had to
> use the Nvidia propietary driver for the 2.6.15+ kernels.
>

OK, figured it out. There was this line in /etc/modprobe.conf

install forcedeth /bin/true

that seemed to be preventing the forcedeth driver from loading properly.

-Peter Ruprecht

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