[server] internet problem

Is there really a nameserver ruing on 192.168.1.1? (Probably it's your wifi router.) Try deleting that entry from resolv.conf and see if you can now resolve names.

Since this is a server I'd suggest a different configuration:

1) Plug it directly into the router with an Etheet cable.

2) Create an entry in /etc/network/interfaces like this:

auto eth0
iface eth0 inet static
    address 192.168.1.100
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4

Please read: https://help.ubuntu.com/lts/servergu...ame-resolution