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yesterday all was fine and Dandy until the internet service went out due to a storm. After my isp got their stuff together all my other devices had internet except for my ubuntu desktop. I booted it off and back on. nothing. I checked the output of 'ifconfig -a' and the only interface shown was the loopback. I made sure that my bios settings were correct and couldn't even find the network adapter in 'lspci -v'

If it means anything my motherboard is a 990fxa-ud3 from gigabyte. any help would be greatly appreciated

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  • Could you give me the output of lspci | awk '/net/ {print $1}' | xargs -i% lspci -ks %?
    – Bram Koert
    May 24, 2016 at 12:50
  • I get no output running that line
    – user249794
    May 24, 2016 at 13:00
  • Could you try booting from a live media and seeing if your network adapter gets recognized there?
    – Bram Koert
    May 24, 2016 at 13:03
  • I did that yesterday and it was unable to find it. I even installed another instance of the os on another hard drive
    – user249794
    May 24, 2016 at 13:18
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    You might wanna check your BIOS settings. Maybe it has become disabled for some reason or another. At this point it isn't a Ubuntu issue, but something hardware related. If changing BIOS settings doesn't help, contact your administrator or hardware vendor.
    – Bram Koert
    May 24, 2016 at 13:34

1 Answer 1

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You may have to manually add the interfaces to /etc/network/interfaces. To see what network interfaces your system has detected look at /etc/udev/rules.d/70-persistent-net.rules. Any interfaces detected will be identified by NAME= Add the interface names to /etc/network/interfaces like this:

auto eth1   # eth1 is an example name
iface eth1 inet dhcp

Then use ifup to bring up the new interface

$ sudo ifup eth1
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  • there doesn't appear to be anything in 70-persistent-net.rules
    – user249794
    May 24, 2016 at 12:57
  • no file /etc/udev/rules.d/70-persistent-net.rules
    – Ievgen
    May 29, 2020 at 16:50

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