82566DM 100MB Auto-Negotiation with 16.4 and 16.5

webadmin@intel.com — Tue, 12 Feb 2013 03:26:51 GMT

I recently reloaded an older PC (Intel DQ965GFEKR - 82566DM), and decided to use the 16.5 package upon reinstall. I noticed that network transfers to and from this PC were slower than usual, and I found that it was negotiating at 100Mb/Full Duplex. I tested another PC (Intel DQ67SW - 82579LM) with the same cable/switch etc. and it auto-negotiates at 1Gb/Full-Duplex.

After trying a few things this is what I've found:

- LAN driver packages 16.4 and 16.5 both auto-negotiate at 100mb/Full Duplex since they both use the same driver (e1exxxx.sys 9.14.180.0)

- LAN driver package 16.3 auto-negotiates at 1Gb/Full Duplex (e1exxxx.sys 9.13.41.0)

- The results are the same whether I install the PROSet software or just bare drivers.

- If I force 1Gb / Full Duplex, the network connection disconnects.

- I've tried Windows XP x86 (SP3), Windows XP x64 (SP2), Windows Vista Business x86 (SP1), and Windows 7 Pro x86/x64 (SP1), all with the same

result (16.3 - 1Gb, 16.4/16.5 - 100Mb)

- BIOS version on the DQ965GFEKR is 6100, and I also tried 6077.

- I've tried another PC with the same motherboard (DQ965GFEKR - 82566DM) and it produced the same result as well.

Here are a few screenshots of Win7 Pro x86 with 16.3 and 16.5: http://imgur.com/a/8SzTV

I'm not sure whether other ethernet controllers that use this particular driver are affected. In any case, I'm running with the 16.3 package right now and all is well

Has anybody else noticed this issue with either this or another supported ethernet component supported by this driver?

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82566DM 100MB Auto-Negotiation with 16.4 and 16.5