0

I installed Ubuntu 16.0 on a Dell 7010 desktop, but the network card only connects at 100mbps. I installed a second TPlink network card and that also works only at 100mbps.

The same network cards works at 1000mbps on windows 7 but not on Ubuntu.

My network cards are:

  • Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
  • Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)

Any advice please.

  • Most times when you see that it's connecting at less than the optimal speed, it's a cabling issue. Are you using cat 5e or cat 6 cables? Is the switch/hub/router/modem that it connects to gigabit? Otherwise, auto-negotiation can sometimes go wrong... but most times... it's cabling. – heynnema Jul 2 '19 at 0:20
  • It is a gigabit switch and cat 5 cabling. i have tried different cabling. Same pc works at 1000mbps with windows – Rohan Wijeratne Jul 2 '19 at 0:24
  • Thanks heynnema, It did turn up to be a strange cabling issue. Tried in another part of the building and it works at 1000mbps. I was confused why it worked with windows and not ubuntu. Resolved the mystry – Rohan Wijeratne Jul 2 '19 at 1:57
  • I put together a quick answer for you. Please remember to accept it if the advice was helpful. Thanks! – heynnema Jul 2 '19 at 2:50
0

From the comments...

Most times when you see that it's connecting at less than the optimal speed, it's a cabling issue. Are you using cat 5e or cat 6 cables? Is the switch/hub/router/modem that it connects to gigabit? Otherwise, auto-negotiation can sometimes go wrong... but most times... it's cabling.

Update #1:

It did turn up to be a strange cabling issue. Tried in another part of the building and it works at 1000mbps. I was confused why it worked with windows and not ubuntu. Resolved the mystry

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.