Hello All,

There are a few threads in the archives about people having trouble
with the 82574L Intel Ethernet controller. I have a SuperMicro
S8SIL-F board with two of these chips. I couldn't get either of them
to work reliably.

To fix it, I went into the BIOS, set things back to default, then
changed the ACPI version to 3.0. Now things work OK.

This is under Fedora 13, x86_64, with kernel rpm
kernel-2.6.33.6-147.2.4.fc13.x86_64

I was using the Intel Ethernet driver, which worked fine, but this is
much more convenient. I hope that someone else can learn from what
I've been going through.

Have a nice day!

Mark Jeanmougin
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On 08/03/2010 04:00 PM, Mark W. Jeanmougin wrote:
> To fix it, I went into the BIOS, set things back to default, then
> changed the ACPI version to 3.0. Now things work OK.

Actually, that's not the fix. I thought this 'fixed' it too, but you'll
have a broken network in a few hours.

The fix is to disable PCI-E ASPM. In the BIOS there is an option for
Active State Power Management, and you need to set it to disabled.

There is a hardware flaw in the 82574L that prevents ASPM from working.

Reference this thread:
https://sourceforge.net/tracker/?func=detail&aid=2908463&group_id=42302&atid=44744 9
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On Tue, Aug 3, 2010 at 21:23, Michael Cronenworth <mike@cchtml.com> wrote:
> *On 08/03/2010 04:00 PM, Mark W. Jeanmougin wrote:
>> To fix it, I went into the BIOS, set things back to default, then
>> changed the ACPI version to 3.0. *Now things work OK.
>
> Actually, that's not the fix. I thought this 'fixed' it too, but you'll
> have a broken network in a few hours.

Yup!

> The fix is to disable PCI-E ASPM. In the BIOS there is an option for
> Active State Power Management, and you need to set it to disabled.

That didn't work for me.

> There is a hardware flaw in the 82574L that prevents ASPM from working.
>
> Reference this thread:
> https://sourceforge.net/tracker/?func=detail&aid=2908463&group_id=42302&atid=44744 9

Thanks for the link!

I was able to add "pcie_aspm=off" as a kernel parameter. Now, things
seem to work again. We'll see how long this lasts before something
else breaks.

As a side note, the NIC doesn't properly activate on boot. I get a
message saying that there is no link present, check cable. A simple
"ifup eth0" gets packets moving again. This NIC seems to leave much
to be desired.

MJ
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