这个问题很容易理解。我似乎无法连接到有线网络,只能连接 wifi。在网络管理器菜单下,以太网显示为灰色,下面显示已断开连接(也是灰色)。当网络管理器不起作用时,我尝试了 dhcpcd,但也没用。
跑步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@0000:02:00.0
logical name: enp2s0
version: 15
serial: 58:20:b1:68:ff:f4
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.043.02-NAPI duplex=half latency=0 link=no multicast=yes port=twisted pair speed=10Mbit/s
resources: irq:43 ioport:4000(size=256) memory:c4204000-c4204fff
memory:c4200000-c4203fff
*-network
description: Wireless interface
product: Wireless 7265
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlp5s0
version: 61
serial: 5c:e0:c5:32:7f:85
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-51-generic firmware=17.352738.0 ip=10.219.184.99 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:50 memory:c4000000-c4001fff
其中网络接口是第一个。然后运行sudo ifconfig -a
:
enp2s0 Link encap:Ethernet HWaddr 58:20:b1:68:ff:f4
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)
Interrupt:43 Base address:0xe000
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:483 errors:0 dropped:0 overruns:0 frame:0
TX packets:483 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:61916 (61.9 KB) TX bytes:61916 (61.9 KB)
wlp5s0 Link encap:Ethernet HWaddr 5c:e0:c5:32:7f:85
inet addr:10.219.184.99 Bcast:10.219.255.255 Mask:255.255.0.0
inet6 addr: fe80::4d41:3774:5f38:aa9e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12807 errors:0 dropped:0 overruns:0 frame:0
TX packets:6470 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15817301 (15.8 MB) TX bytes:949784 (949.7 KB)
我们可以看到enp2s0是以太网设备
下一步运行sudo ethtool enp2s0
:
Settings for enp2s0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: no
注意Link detected: no
。我已插入以太网电缆,它似乎应该说是。
为了完整起见,lspci
:
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:04.0 Signal processing controller: Intel Corporation Broadwell-U Camarillo Device (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
00:1c.5 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #6 (rev e3)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
04:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 950M] (rev a2)
05:00.0 Network controller: Intel Corporation Wireless 7265 (rev 61)
我尝试了“/etc/network/interfaces”,但最终还是将其保留为 auto lo iface lo inet loopback
这其实并不重要,因为我的/etc/NetworkManager/NetworkManager.conf
文件看起来像这样:
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
我尝试将 managed 设置为 true 并添加enp2s0
到/etc/Network/interfaces
文件中,然后重新启动 NetworkManager (sudo service network-manager start/stop/reset
)
我尝试使用 dhcpcd,得到以下结果:
no interfaces have a carrier
forked to background, child pid 4994
我可以 ping 通 localhost,可以使用无线,DNS 也很好,但有线连接就是不行。而且网卡本身可以与 Windows 等其他已安装的操作系统配合使用,所以我怀疑这不是硬件问题。
现在我把它交给 StackExchange 大神们。请帮忙 :(
答案1
如果您可以暂时使用 WiFi 或手动下载包,您可以尝试安装 DKMS 包:
sudo apt-get update
sudo apt-get install r8168-dkms
sudo modprobe r8168
- 重新启动计算机
要手动下载:
- 去http://packages.ubuntu.com/xenial/all/r8168-dkms/download
- 选择镜像并下载
r8168-dkms_8.041.00-1_all.deb
软件包 - 将包复制
r8168-dkms_8.041.00-1_all.deb
到目标机器 sudo dpkg -i r8168-dkms_8.041.00-1_all.deb
sudo modprobe r8168
- 重新启动计算机