无线网络运行正常，没有任何问题。
使用以太网电缆连接路由器不起作用。
是否配置
enp2s0 Link encap:Ethernet HWaddr 22:e6:8b:31:98:31
inet6 addr: fe80::20e6:8bff:fe31:9831/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:658 errors:0 dropped:1 overruns:0 frame:0
TX packets:560 errors:0 dropped:0 overruns:0 carrier:2
collisions:0 txqueuelen:1000
RX bytes:56297 (56.2 KB) TX bytes:96178 (96.1 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:4197 errors:0 dropped:0 overruns:0 frame:0
TX packets:4197 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:287630 (287.6 KB) TX bytes:287630 (287.6 KB)
wlp3s0 Link encap:Ethernet HWaddr 9c:b7:0d:19:a3:ab
inet addr:192.168.1.40 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::e632:820e:ddd6:f24b/64 Scope:Link
inet6 addr: fe80::8684:5bf3:f9f4:f878/64 Scope:Link
inet6 addr: fe80::a2e9:6579:4c22:3881/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3895 errors:0 dropped:0 overruns:0 frame:0
TX packets:3588 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2488346 (2.4 MB) TX bytes:629810 (629.8 KB)
lspci-v
02:00.0 Ethernet controller: Qualcomm Atheros AR8152 v2.0 Fast Ethernet (rev c1)
Subsystem: Toshiba America Info Systems AR8152 v2.0 Fast Ethernet
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at f0100000 (64-bit, non-prefetchable) [size=256K]
I/O ports at 2000 [size=128]
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [58] Express Endpoint, MSI 00
Capabilities: [6c] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [180] Device Serial Number ff-00-00-00-00-00-00-ff
Kernel driver in use: atl1c
Kernel modules: atl1c
03:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: Lite-On Communications Inc AR9285 Wireless Network Adapter (PCI-Express)
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f0000000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [60] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 00-15-17-ff-ff-24-14-12
Capabilities: [170] Power Budgeting <?>
Kernel driver in use: ath9k
Kernel modules: ath9k
消息
[ 2.453972] atl1c 0000:02:00.0 enp2s0: renamed from eth0
[ 27.218201] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[ 27.218981] atl1c 0000:02:00.0: atl1c: enp2s0 NIC Link is Up<100 Mbps Full Duplex>
[ 45.731461] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[ 45.731866] atl1c 0000:02:00.0: atl1c: enp2s0 NIC Link is Up<100 Mbps Full Duplex>
我不知道为什么它不起作用。我试过关闭 Wi-Fi，但结果还是一样。还试过忽略 IPv6。更改接口文件等。有什么想法吗？
更新 1：
是否配置
enp2s0 Link encap:Ethernet HWaddr 22:e6:8b:31:98:31
inet addr:192.168.1.40 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::9396:5afa:a5d6:d18b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:110 errors:0 dropped:1 overruns:0 frame:0
TX packets:613 errors:0 dropped:0 overruns:0 carrier:6
collisions:0 txqueuelen:1000
RX bytes:16315 (16.3 KB) TX bytes:66491 (66.4 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:3868 errors:0 dropped:0 overruns:0 frame:0
TX packets:3868 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:276562 (276.5 KB) TX bytes:276562 (276.5 KB)
我用这个改变了接口文件：
auto enp2s0
iface enp2s0 inet static
address 192.168.1.40
netmask 255.255.255.0
gateway 192.168.1.1
仍然没有网络！
更新2：
route -n (使用同一路由器的 Wi-Fi)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 600 0 0 wlp3s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp3s0
192.168.1.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp3s0
路由 -n（以太网又名问题）
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 100 0 0 enp2s0
192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 enp2s0