Change speed eth0

Hi all! I have trouble changing the speed of the network interface, supports up to 1000Mbps, also I have a Cisco Switch that supports up to 1 gigabit is not configurable, but automatically when it detects equipment gives the maximum speed of his card. My problem is the OMV server only assigned to 100Mbps, change the parameters from the network configuration but put off negotiating and 1000 only gives me speed up to 10Mbps, Any ideas?

Yes, @ryecoaaron , I tried different cable, port on switch, but nothing works, since installing the server, only once I had 1000 Mbps, if it is functional I have a switch cisco SR2024, it is a good device but is not configurable. Thank you

I tried too,

ethtool -s eth0 speed 1000 duplex full
ethtool -s eth0 speed 1000 duplex full autoneg off
ethtool -s eth0 speed 1000

But nothing works, I really need the 1000 Mbps because I have many heavy transfers

You know how can I see this info about network adapter? The server is a Lenovo Thinkcentre M92, If I remember correctly is Realtek but I'm not sure, if I install the backport kernel no risk to losing the settings?

for some reason I can't use lspci, either install it. Now I install blackport Kernel, upgrade OMV to 1.10, but when I change de speed the server answer: Cannot advertise speed 1000.

I put the old hard drive with W7, the adapter is Intel, and I have the same problem in windows, after the negociation the switch assign only 100Mbps, can you advise me a model of card to purchase? Thank you

I don't have another switch to 1Gbps, but connect it to another computer gigabit (the switch gives him 1Gbps) and doesn't work, just 100Mbps too. I tried to install 32bits version of OMV, as mentioned in this thread, but doesn't work. So I think the only solution tu tried is changing the network device. You think maybe is a plugin cause the problem?

Yes I will try a new Intel adapter, Thank you @ryecoaaron for your help

Hi again! Yesterday arrive my new network device, was the TP-Link TG-3468 and automatically the switch assigned 1000 Mbps, attached some screenshots of the first transfer test and tellme you if all goes as it should, for now I'm happy.

P.S. I dont know why the transfer still continue in the graph, I just copy the folder lasted 7:44 min

@ryecoaaron you think this is normal? since I made the first transfer the speed network still open, and a process of smbd still use very much CPU, screenshot attached.

P.S. In graph transfer I don't know why maximum speed up to 2.1 Gbps, my switch is just to 1000 Mbps, I reboot, poweroff, poweroff client, and still transfer something, may its an error of graph?

I dont know how or why now the speed network down to normally and the smbd process stoped. May it is these stuff of devil. Now we have a powerfull NAS server. Thanks guys.