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The only way I can fix it is to change to wicd, then it does it again, so I'll change back and forth between wicd and network-manager. any ideas on what's causing this? I have a full duplex rtl8169, I had this problem before I tried installing the proprietary drivers. I also used

sudo ethtool -s eth2 speed 1000 duplex full autoneg on

to make sure everything was setup at its maximum potential. I am still having this issue, and I never had this problem with windows.

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  • Does this also happen on your local LAN? How long ago did you try this on Window$?
    – Fabby
    Nov 30, 2014 at 2:04
  • it doesn't seem to be happening on my local lan, and i've been on ubuntu for weeks and it has been doing it, and all the other windows computers in the house are working at max speed
    – Alexander Miller
    Dec 3, 2014 at 21:39
  • Weird... Can you turn off autoneg?
    – Fabby
    Dec 3, 2014 at 22:00
  • Now I did, should I reboot afterwards?
    – Alexander Miller
    Dec 4, 2014 at 0:07
  • No, a sudo service networking restart should be enough...
    – Fabby
    Dec 4, 2014 at 0:08

2 Answers 2

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Go to a terminal using Ctrl+Alt+Tand type:

gksudo gedit /etc/network/interfaces

in your eth2 section add:

iface eth2 inet ...
    ...
    ...
    up sleep 5; ethtool -s eth2 -s eth2 speed 100 duplex full

(note the 100, not 1000: internally on the LAN, 100 is slow but towards the Internet 100 is fast) If that works reliably for some time (a week), upgrade it to 1000!

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  • I used a different method before I saw this, and it seems to be working for the time being, if I have more trouble I will try this one.
    – Alexander Miller
    Dec 4, 2014 at 1:28
  • 1
    So I ultimately just gave up. I grabbed a half duplex 10/100 card from work and called it a day. Thank you for all the help, I can't thank you enough, I love this community
    – Alexander Miller
    Dec 5, 2014 at 3:06
  • accepting my answer and upvoting is better then a thank you as my reputation will go up! ;-)
    – Fabby
    Dec 5, 2014 at 11:15
  • 1
    I don't have enough reputation to upvote right now, sadly
    – Alexander Miller
    Dec 6, 2014 at 0:30
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So after messing around I figured out how to fix my issue, 

gksudo gedit /etc/rc.local

I entered

ethtool -s eth0 autoneg off speed 100 duplex full

above the exit 0 and this seemed to fix it at least for now.

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