I've recently installed Linux Mint 18.1 and I'm very new to it.Everything is fine with wifi, but I cannot access the internet via ethernet cable. When I try to connect, Chromium just says that there is no internet connection.Output of sudo ifconfig -a:enp5s0    Link encap:Ethernet  HWaddr 1c:75:08:26:90:db        inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0      inet6 addr: fe80::1e75:8ff:fe26:90db/64 Scope:Link      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1      RX packets:7381 errors:0 dropped:0 overruns:0 frame:0      TX packets:7203 errors:0 dropped:0 overruns:0 carrier:0      collisions:0 txqueuelen:1000       RX bytes:1278143 (1.2 MB)  TX bytes:789190 (789.1 KB)      Interrupt:18 lo        Link encap:Local Loopback        inet addr:127.0.0.1  Mask:255.0.0.0      inet6 addr: ::1/128 Scope:Host      UP LOOPBACK RUNNING  MTU:65536  Metric:1      RX packets:2 errors:0 dropped:0 overruns:0 frame:0      TX packets:2 errors:0 dropped:0 overruns:0 carrier:0      collisions:0 txqueuelen:1       RX bytes:98 (98.0 B)  TX bytes:98 (98.0 B)wlp4s0    Link encap:Ethernet  HWaddr 00:26:c6:da:7e:30        UP BROADCAST MULTICAST  MTU:1500  Metric:1      RX packets:0 errors:0 dropped:0 overruns:0 frame:0      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0      collisions:0 txqueuelen:1000       RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)output of iwconfig:lo        no wireless extensions.enp5s0    no wireless extensions.wlp4s0    IEEE 802.11abgn  ESSID:off/any            Mode:Managed  Access Point: Not-Associated   Tx-Power=15 dBm             Retry short limit:7   RTS thr:off   Fragment thr:off          Power Management:offRelevant output of lspci:04:00.0 Network controller: Intel Corporation WiFi Link 510005:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)I tried adding the following lines to /etc/network/interfaces:auto enp5s0iface enp5s0 inet dhcpbut it doesn't work. I still can't connect to the internet. Output of dmesg | tail -n 20 after plugging in the network cable:[   41.903417] ACPI Warning: \_SB_.PCI0.PEGP.VGA_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)[   41.903485] ACPI Warning: \_SB_.PCI0.PEGP.VGA_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)[   41.903552] ACPI Warning: \_SB_.PCI0.PEGP.VGA_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)[   41.904761] ACPI Warning: \_SB_.PCI0.PEGP.VGA_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)[   42.023873] iwlwifi 0000:04:00.0: RF_KILL bit toggled to enable radio.[   42.025694] iwlwifi 0000:04:00.0: L1 Enabled - LTR Disabled[   42.033148] iwlwifi 0000:04:00.0: L1 Enabled - LTR Disabled[   42.033265] iwlwifi 0000:04:00.0: Radio type=0x1-0x2-0x0[   43.350521] iwlwifi 0000:04:00.0: L1 Enabled - LTR Disabled[   43.354652] iwlwifi 0000:04:00.0: L1 Enabled - LTR Disabled[   43.354750] iwlwifi 0000:04:00.0: Radio type=0x1-0x2-0x0[   43.395109] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready[   43.489583] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready[ 2299.040250] CE: hpet increased min_delta_ns to 20115 nsec[ 4705.704005] tg3 0000:05:00.0 enp5s0: Link is down[ 4713.523072] tg3 0000:05:00.0 enp5s0: Link is up at 1000 Mbps, full duplex[ 4713.523093] tg3 0000:05:00.0 enp5s0: Flow control is off for TX and off for RX[ 4779.820050] tg3 0000:05:00.0 enp5s0: Link is down[ 4786.441835] tg3 0000:05:00.0 enp5s0: Link is up at 1000 Mbps, full duplex[ 4786.441856] tg3 0000:05:00.0 enp5s0: Flow control is off for TX and off for RXoutput of ping -c2 8.8.8.8PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.--- 8.8.8.8 ping statistics ---2 packets transmitted, 0 received, 100% packet loss, time 1007msEDIToutput of sudo iptables -vLChain INPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target     prot opt in     out     source               destination         Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target     prot opt in     out     source               destination         Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes) pkts bytes target     prot opt in     out     source               destination ONE MORE EDIToutput from ipconfig on Windows (it's russian language, sorry)  IP  Windows PPP Internet:   DNS-  . . . . . :   IPv4-. . . . . . . . . . . . : 192.168.57.121     . . . . . . . . . . : 255.255.255.255    . . . . . . . . . : 0.0.0.0Ethernet adapter Tunngle:    . . . . . . . . :   .   DNS-  . . . . . :Ethernet adapter     2:   DNS-  . . . . . :    IPv6-  . . . : fe80::d5fe:d1a2:2e54:eeeb%16    IPv4- . . . . : 169.254.238.235     . . . . . . . . . . : 255.255.0.0    . . . . . . . . . :       2:    . . . . . . . . :   .   DNS-  . . . . . :  isatap.{7B8FAF91-9786-4E2C-A66F-3387471FD72B}:    . . . . . . . . :   .   DNS-  . . . . . :  isatap.{FD3701FE-07FF-4726-ACD9-38B926C34CF5}:    . . . . . . . . :   .   DNS-  . . . . . :
Linux Mint and wired connection problem
networking;ethernet
It turns out you need to run PPPoE to connect to the Internet. The easiest way to do that is to run pppoeconf and follow the prompts.If instead you want to instead configure it by hand, it'd be something like this (taken from a working config I have):/etc/network/interfacesauto enp5s0-pppiface enp5s0-ppp inet ppp        pre-up ip link set enp5s0 up mtu 1508 # if your ISP supports        provider your-isp/etc/ppp/pap-secretsObviously, use your actual ISP-provided username and password instead of the placeholders here. The * specifies which remote this applies to, easiest to use * if you've only got one remote.your-username * your-password/etc/ppp/peers/your-ispNote this one is a little different than my filemy config has static IP addresses, so there is a local-ip: line instead of noipdefault.noipdefaultnoauthpersistmaxfail 0mtu 1500mru 1500noktunedefaultrouteifname enp5s0-pppnoaccomp default-asyncmapplugin rp-pppoe.so enp5s0user your-username