在我的 ubuntu 16.04 机器上发布此问题之前大约 3 小时，以太网和 Wifi 网络都已断开连接。我在发布之前尝试阅读以下内容：
sudo service network-manager restart--> 不工作sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf_orig并且sudo service network-manager restart——>不起作用- 在 /etc/NetworkManager/NetworkManager.conf 中更改 managed=true 并重新启动网络管理器 --> 不起作用
不过，我确实注意到，在“系统设置 > 网络”中，有线网络显示电缆已拔出。但我已插入电缆，这是我检查的第一件事。即使我的有线网络已关闭，为什么 Wifi 会关闭？物理以太网端口和 wifi 适配器是否可能已损坏？ 我甚至尝试更新我的 realtek 驱动程序这里。
请帮助我解决这个问题。如果我遗漏了什么，请指出。
一些可能有用的细节： nmcli 开发
DEVICE TYPE STATE CONNECTION
docker0 bridge connected docker0
cdc-wdm1 gsm connected Airtel Default
wlp2s0 wifi disconnected --
enp1s0 ethernet unavailable --
vmnet1 ethernet unmanaged --
vmnet8 ethernet unmanaged --
lo loopback unmanaged --
猫/等/网络/接口
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
sudo lshw-c 网
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 07
serial: 74:86:7a:72:14:d2
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.041.00-NAPI duplex=half latency=0 link=no multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:25 ioport:3000(size=256) memory:c2404000-c2404fff memory:c2400000-c2403fff
*-network
description: Wireless interface
product: BCM43142 802.11b/g/n
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 01
serial: 9c:2a:70:bb:35:03
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:17 memory:c2500000-c2507fff
*-network
description: Ethernet interface
physical id: 2
logical name: wwp0s20u2i3
serial: 86:3a:2a:87:fd:5f
capabilities: ethernet physical
configuration: broadcast=yes driver=qmi_wwan driverversion=22-Aug-2005 firmware=WWAN/QMI device ip=100.89.254.112 link=yes multicast=yes
命令ifconfig输出：
enp1s0 Link encap:Ethernet HWaddr 74:86:7a:72:14:d2
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:25 Base address:0x4000
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:45733 errors:0 dropped:0 overruns:0 frame:0
TX packets:45733 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:26725902 (26.7 MB) TX bytes:26725902 (26.7 MB)
vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01
inet addr:172.16.64.1 Bcast:172.16.64.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:1376 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08
inet addr:172.16.161.1 Bcast:172.16.161.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:1376 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlp2s0 Link encap:Ethernet HWaddr 9c:2a:70:bb:35:03
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:388
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:17
wwp0s20u2i3 Link encap:Ethernet HWaddr 86:3a:2a:87:fd:5f
inet addr:100.89.254.112 Bcast:100.89.254.115 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23212 errors:0 dropped:0 overruns:0 frame:0
TX packets:24048 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14332307 (14.3 MB) TX bytes:3278231 (3.2 MB)
串行通信
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM77 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)