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I recently upgraded to Ubuntu 16.04 and have been having issues connecting to the internet. I can use it for a few minutes and then all of a sudden pages stop loading and I get the "server not found" message on Firefox. Ubuntu still shows it's connected to the internet, though. If I disconnect and reconnect the cable, or even just click on "wired connection 1" in the menu, it reconnects and the internet works again for a short time. I have to do this every few minutes. Does anyone know what the problem could be? Or how to solve it?

I've tried reinstalling ubuntu from fresh but the issue is still there. I've also had a bunch of other problems (graphics), but I'm hoping I'll be able to fix them once my internet is 100% working.

If it's of any help my rig is:

  • Ubuntu 16.04 (alongside Windows 10)
  • Intel i7 6700 CPU
  • Gigabyte H170M-D3H motherboard
  • ASUS Nvidia GeForce GTX 750 ti GPU

Any help would be greatly appreciated. I've pretty much tried everything I can find on the net.

David Foerster
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Chris
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3 Answers3

7

I found a workaround for anyone who might be having the same issue. No idea what the actual problem is but it seems as though setting the IPv6 settings "Method" section to "ignore" has resolved it.

Chris
  • 799
3

Not sure if this will work. I also had this problem till I changed my Internet DNS servers to 8.8.8.8,8.8.4.4. Changed it for the IPv4 and it started working very well. Make sure you enter the values properly.

devilz
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0

I got similar issue. "dmesg" shows some error on my Laptop:

[ 1755.216938] alx 0000:01:00.0 enp1s0: fatal interrupt 0x400, resetting
[ 1755.219706] alx 0000:01:00.0 enp1s0: NIC Up: 100 Mbps Full
[ 1991.252316] alx 0000:01:00.0 enp1s0: fatal interrupt 0x400, resetting
[ 1991.255396] alx 0000:01:00.0 enp1s0: NIC Up: 100 Mbps Full
[ 2045.330022] alx 0000:01:00.0 enp1s0: fatal interrupt 0x400, resetting
[ 2045.332851] alx 0000:01:00.0 enp1s0: NIC Up: 100 Mbps Full
[ 2095.727968] alx 0000:01:00.0 enp1s0: fatal interrupt 0x400, resetting
[ 2095.730059] alx 0000:01:00.0 enp1s0: NIC Up: 100 Mbps Full

I workaround this by change the "MTU" to 9000 (see https://bugzilla.kernel.org/show_bug.cgi?id=70761)

Lok Lam Cheng
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