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SirThomas · 20-08-2019, 22:28

A strange one, but maybe someone has an idea as to what's going on here...

So; Gigabit network setup; Modem, router, switch, cabling of Cat6 standard.

Just recently my main PC has been getting auto-negotiated at 100 full duplex. It's always been gigabit previously (and annoyingly you can never force gig duplex on a NIC card).

Reinstalled/uninstalled drivers and swapped ethernet leads - But to no avail. Seems bizarre that the NIC card would suddenly only work in a lower speed. I've tested the switch port with other gig devices and it's fine. I even ran a straight run of ethernet from PC to main router, bypassing switches.

Anyone seen this occur before, any ideas for a fix? I almost suspect Windows 10, as it's been updating recently!

Killer E2200 NIC/AC87u/GS116E If it matters.

Tom

20-08-2019, 22:28	#1
SirThomas cf.addict Join Date: May 2010 Location: PO9 - Havant Services: Vodafone 80x20 Backup, MixTV & V6, Vivid 350, Hub3 & RT-AC87u Posts: 126	100meg on Gigabit setup... A strange one, but maybe someone has an idea as to what's going on here... So; Gigabit network setup; Modem, router, switch, cabling of Cat6 standard. Just recently my main PC has been getting auto-negotiated at 100 full duplex. It's always been gigabit previously (and annoyingly you can never force gig duplex on a NIC card). Reinstalled/uninstalled drivers and swapped ethernet leads - But to no avail. Seems bizarre that the NIC card would suddenly only work in a lower speed. I've tested the switch port with other gig devices and it's fine. I even ran a straight run of ethernet from PC to main router, bypassing switches. Anyone seen this occur before, any ideas for a fix? I almost suspect Windows 10, as it's been updating recently! Killer E2200 NIC/AC87u/GS116E If it matters. *Tom*