Red Hat Bugzilla – Bug 125416
Second NIC not detected on Tyan S2707G2N
Last modified: 2007-11-30 17:10:44 EST
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Description of problem:
I took a system that was running a 2.4 kernel and tried to install
Fedora Core 2 over it (straight install, not an upgrade). The Fedora
Core 2 only detected the Intel 82540EM NIC that is built into the
S2707G2N motherboard. The Intel 82545EM NIC was not detected. After
a while, I gave up on Fedora Core 2 and re-installed RedHat 9 over
Fedora Core 2. After the re-install or RedHat 9 over Fedora, both
NICs were once again detected and functioning perfectly.
(Note - I have actually two systems that are essentially the same. I
have seen this problem on both systems. The only difference between
then is that one has the 3ware 7500-8 adapter, and the other was a
Tyan S2707G2N M/B (with latest BIOS v1.07) [all jumpers in their
512MB DDR266 ECC, Registered RAM (Corsair)
3ware 7500-8 (last firmeware from v7.7.0 release)
Maxtor 40GB UDMA133 IDE drive
52X IDE CD-ROM (Memorex)
The 3ware card is installed in the first PCI-X slot (the one that does
*not* share a PCI bus with the embedded NIC).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install Fedore Core 2 onthe system above
Actual Results: Fedora Code 2 installs, but second NIC is not detected.
Expected Results: Expected that the second NIC would be detected
One thought just occured to me here. The NIC that is not being
detected is on the 64-bit PCI-X bus. The one that is detected is on
the 32-bit PCI bus (the motherboard has three separate PCI busses).
If you look at my other bug (#125412), the 3ware card that is not
being detected was also plugged into a PCI-X slot. Maybe something
changed with the 2.6 kernel such that the PCI-X buses are not being
it could be that acpi is ruining the game, could you try acpi=off ?
Interesting. Turning off the ACPI support does prevent this
problem. It also solves the problem I reported in BZ# 125412.
'Course, it means that I can't get ACPI support running, which is a
bit of a problem for an SMP system as that is the only way that I can
get power management. For the time being, I can work with things
this way, but I would really like to get *both* ACPI *and* my
NIC/3Ware hard running at the same time.
Some other data points from various experiments I ran:
Problem also occurs with a stock 2.4.26 kernel installed on top of a
RedHat 9 installation. Turning off ACPI "fixes" the problem here as
Problem also occurs with a stock 2.6.6 kernel installed on top of a
Fedora Core 2 installation. Turning off ACPI "fixes" the problem
here as well.
*** This bug has been marked as a duplicate of 124572 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.