我最近全新安装了 Ubuntu，没有双启动，所以一切都被删除了，但现在我无法连接到互联网，即使使用有线连接也是如此。在“连接信息”上，它显示它是“活动网络连接”，但我无法上网。以下是我在网上找到的一些命令的结果：
ifconfig
eth0 Link encap:Ethernet HWaddr 00:23:54:2a:b5:fd
inet addr:10.42.0.1 Bcast:10.42.0.255 Mask:255.255.255.0
inet6 addr: fe80::223:54ff:fe2a:b5fd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:138 errors:0 dropped:5 overruns:0 frame:0
TX packets:1730 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15637 (15.6 KB) TX bytes:337255 (337.2 KB)
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:6386 errors:0 dropped:0 overruns:0 frame:0
TX packets:6386 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:502340 (502.3 KB) TX bytes:502340 (502.3 KB)
----------------------------------------------
sudo lshw -C network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:0c:00.0
logical name: eth0
version: 02
serial: 00:23:54:2a:b5:fd
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half ip=10.42.0.1 latency=0 link=yes multicast=yes port=MII speed=10Mbit/s
resources: irq:28 ioport:e800(size=256) memory:fcfff000-fcffffff memory:fcfe0000-fcfeffff memory:fea00000-fea0ffff
------------------------------------------------
sudo ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:23:54:2a:b5:fd
inet addr:10.42.0.1 Bcast:10.42.0.255 Mask:255.255.255.0
inet6 addr: fe80::223:54ff:fe2a:b5fd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:410 errors:0 dropped:12 overruns:0 frame:0
TX packets:1799 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:43699 (43.6 KB) TX bytes:345354 (345.3 KB)
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:7716 errors:0 dropped:0 overruns:0 frame:0
TX packets:7716 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:613180 (613.1 KB) TX bytes:613180 (613.1 KB)
--------------------------------------------------
lspci -nnk | grep -i net -A2
0c:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 02)
Subsystem: Lenovo Device [17aa:2108]
Kernel driver in use: r8169
---------------------------------------------------
cat/etc/network/interfaces
bash: cat/etc/network/interfaces: No such file or directory
---------------------------------------------------
cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
-----------------------------------------------------
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.42.0.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
--------------------------------------------
cat /var/lib/NetworkManager/NetworkManager.state
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
------------------------------------------
sudo ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: No
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
----------------------------------
cat syslog
cat: syslog: No such file or directory
请帮助我，非常感谢
答案1
请注意，您的以太网有一个 IP 地址，即非常不常见的 10.42.0.1。这表明以太网设置为与网络上的另一台计算机共享；相反，它应该设置为从路由器、交换机或其他接入点请求并接收 IP 地址。
请单击网络管理器图标，选择“编辑连接”，突出显示以太网连接并选择“编辑”。选择 IPv4 设置并确保其设置为“自动（DHCP）”。
从终端重新启动网络管理器：
sudo service network-manager restart
有改善吗？