我最近安装了 Linux Mint 18.1，而且对它还很陌生。 wifi 一切正常，但我无法通过以太网电缆访问互联网。当我尝试连接时，Chromium 只是说没有互联网连接。
输出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)
输出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:off
相关输出lspci：
04:00.0 Network controller: Intel Corporation WiFi Link 5100
05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)
我尝试将以下行添加到/etc/network/interfaces：
auto enp5s0
iface enp5s0 inet dhcp
但它不起作用。我仍然无法连接到互联网。
dmesg | tail -n 20插上网线后输出：
[ 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 RX
的输出ping -c2 8.8.8.8
PING 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 1007ms
编辑
的输出sudo iptables -vL
Chain 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
再编辑一次
Windows 上的输出ipconfig（抱歉，是俄语）
Настройка протокола IP для Windows
Адаптер PPP Internet:
DNS-суффикс подключения . . . . . :
IPv4-адрес. . . . . . . . . . . . : 192.168.57.121
Маска подсети . . . . . . . . . . : 255.255.255.255
Основной шлюз. . . . . . . . . : 0.0.0.0
Ethernet adapter Tunngle:
Состояние среды. . . . . . . . : Среда передачи недоступна.
DNS-суффикс подключения . . . . . :
Ethernet adapter Подключение по локальной сети 2:
DNS-суффикс подключения . . . . . :
Локальный IPv6-адрес канала . . . : fe80::d5fe:d1a2:2e54:eeeb%16
Автонастройка IPv4-адреса . . . . : 169.254.238.235
Маска подсети . . . . . . . . . . : 255.255.0.0
Основной шлюз. . . . . . . . . :
Адаптер беспроводной локальной сети Беспроводное сетевое соединение 2:
Состояние среды. . . . . . . . : Среда передачи недоступна.
DNS-суффикс подключения . . . . . :
Туннельный адаптер isatap.{7B8FAF91-9786-4E2C-A66F-3387471FD72B}:
Состояние среды. . . . . . . . : Среда передачи недоступна.
DNS-суффикс подключения . . . . . :
Туннельный адаптер isatap.{FD3701FE-07FF-4726-ACD9-38B926C34CF5}:
Состояние среды. . . . . . . . : Среда передачи недоступна.
DNS-суффикс подключения . . . . . :
答案1
事实证明，您需要运行 PPPoE 才能连接到 Internet。最简单的方法是运行pppoeconf并按照提示操作。
如果您想手动配置它，它会是这样的（取自我的工作配置）：
/etc/网络/接口
auto enp5s0-ppp
iface enp5s0-ppp inet ppp
pre-up ip link set enp5s0 up mtu 1508 # if your ISP supports
provider your-isp
/etc/ppp/pap 秘密
显然，请使用您实际的 ISP 提供的用户名和密码，而不是此处的占位符。指定适用于哪个遥控器，如果您只有一个遥控器，则*最容易使用。*
"your-username" * "your-password"
/etc/ppp/peers/your-isp
请注意，这个文件与我的文件略有不同 - 我的配置具有静态 IP 地址，因此有一行local-ip:而不是noipdefault.
noipdefault
noauth
persist
maxfail 0
mtu 1500
mru 1500
noktune
defaultroute
ifname enp5s0-ppp
noaccomp
default-asyncmap
plugin rp-pppoe.so enp5s0
user "your-username"