[ipxe-devel] Intel 82579lm => Bad performance with AMT enabled

Michael Brown mbrown at fensystems.co.uk
Mon Oct 28 18:37:57 UTC 2013


On 28/10/13 14:23, Bovey Christian wrote:
> We tried to found a solution, doing lots of tests (You can see result in
> the forum : http://forum.ipxe.org/showthread.php?tid=6796). We found
> that auto-negotiation fails to detect correct speed and force link to
> 10Mbit/s.
>
> As suggested by robinsmidrod, we built a new kernel (ipxe.pxe) with
> debug enabled (DEBUG=intel:3).
>
> The four pictures attached to this mail shows boot results using various
> configuration :

Interestingly, the 82579LM is reporting that it has negotiated 1000Mbps 
full-duplex in all four cases (according to the "link status" value).

Michael



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