我无法连接到 Wi-Fi。下拉菜单中缺少 Wi-fi 选项卡，并且系统设置的网络选项卡中也没有提到无线。我只能通过以太网连接。我在带有 realtek 无线网卡的 hp 笔记本电脑上运行 Ubuntu 16.04 LTS。
sudo lshw -c 网络
曾是
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:08:00.0
logical name: eno1
version: 08
serial: 38:63:bb:a6:46:14
size: 10Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-2_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:48 ioport:4000(size=256) memory:c6004000-c6004fff memory:c6000000-c6003fff
*-network
description: Ethernet interface
physical id: 3
logical name: enxfcde56ff0106
serial: fc:de:56:ff:01:06
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.1.102 link=yes multicast=yes
还尝试了无线信息脚本
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
给出了剧本
>
> ########## wireless info START ##########
>
> Report from: 06 Jul 2017 10:59 IST +0530
>
> Booted last: 06 Jul 2017 00:00 IST +0530
>
> Script from: 25 Mar 2017 07:04 UTC +0000
>
> ##### release ###########################
>
> Distributor ID: Ubuntu Description: Ubuntu 16.04.2 LTS Release: 16.04
> Codename: xenial
>
> ##### kernel ############################
>
> Linux 4.8.0-53-generic #56~16.04.1-Ubuntu SMP Tue May 16 01:18:56 UTC
> 2017 x86_64 x86_64 x86_64 GNU/Linux
>
> Parameters: ro, quiet, splash, vt.handoff=7
>
> ##### desktop ###########################
>
> Ubuntu
>
> ##### lspci #############################
>
> 08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
> RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136]
> (rev 08) DeviceName: Realtek PCIe FE Family Controller Subsystem:
> Hewlett-Packard Company RTL8101/2/6E PCI Express Fast/Gigabit Ethernet
> controller [103c:2296]
>
> ##### lsusb #############################
>
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001
> Device 003: ID 0bda:b001 Realtek Semiconductor Corp. Bus 001 Device
> 002: ID 064e:c344 Suyin Corp. Bus 001 Device 010: ID 05c6:f00e
> Qualcomm, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0
> root hub
>
> ##### PCMCIA card info ##################
>
> ##### rfkill ############################
>
> 0: hci0: Bluetooth Soft blocked: no Hard blocked: no
>
> ##### lsmod #############################
>
> hp_wmi 16384 0 sparse_keymap 16384 1 hp_wmi
> mxm_wmi 16384 1 nouveau wmi 16384
> 3 mxm_wmi,nouveau,hp_wmi
>
> ##### interfaces ########################
>
> auto lo iface lo inet loopback
>
> ##### ifconfig ##########################
>
> eno1 Link encap:Ethernet HWaddr <MAC 'eno1' [IF1]>
> 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)
>
> enx<IF from MAC [IF2]> Link encap:Ethernet HWaddr <MAC 'enx<IF from
> MAC [IF2]>' [IF2]>
> inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0
> inet6 addr: fe80::890f:f4f4:5a72:5e4a/64 Scope:Link
> inet6 addr: 2405:204:d482:706c:b13e:6d29:eac:a886/64 Scope:Global
> inet6 addr: 2405:204:d482:706c:58ae:92de:cd4:3538/64 Scope:Global
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:6022 errors:0 dropped:0 overruns:0 frame:0
> TX packets:5721 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:3767364 (3.7 MB) TX bytes:976879 (976.8 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:3896 errors:0 dropped:0 overruns:0 frame:0
> TX packets:3896 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1
> RX bytes:308502 (308.5 KB) TX bytes:308502 (308.5 KB)
>
> ##### iwconfig ##########################
>
> eno1 no wireless extensions.
>
> lo no wireless extensions.
>
> enx<IF from MAC [IF2]> no wireless extensions.
>
> ##### route #############################
>
> 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 enx<IF from MAC [IF2]>
> 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enx<IF from MAC [IF2]>
> 192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 enx<IF from MAC [IF2]>
>
> ##### resolv.conf #######################
>
> nameserver 127.0.1.1
>
> ##### network managers ##################
>
> Installed:
>
> NetworkManager
>
> Running:
>
> root 3745 1 0 10:53 ? 00:00:00
> /usr/sbin/NetworkManager --no-daemon
>
> ##### NetworkManager info ###############
>
> GENERAL.DEVICE: enx<IF from MAC [IF2]>
> GENERAL.TYPE: ethernet GENERAL.NM-TYPE:
> NMDeviceEthernet GENERAL.VENDOR: Qualcomm
> GENERAL.PRODUCT: Mobile Router GENERAL.DRIVER:
> rndis_host GENERAL.DRIVER-VERSION: 22-Aug-2005
> GENERAL.FIRMWARE-VERSION: RNDIS device GENERAL.HWADDR:
> <MAC 'enx<IF from MAC [IF2]>' [IF2]> GENERAL.MTU:
> 1500 GENERAL.STATE: 100 (connected)
> GENERAL.REASON: 0 (No reason given)
> GENERAL.UDI:
> /sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/net/enx<IF from
> MAC [IF2]> GENERAL.IP-IFACE: enx<IF from MAC
> [IF2]> GENERAL.IS-SOFTWARE: no GENERAL.NM-MANAGED:
> yes GENERAL.AUTOCONNECT: yes
> GENERAL.FIRMWARE-MISSING: no GENERAL.NM-PLUGIN-MISSING:
> no GENERAL.PHYS-PORT-ID: -- GENERAL.CONNECTION:
> Wired connection 2 GENERAL.CON-UUID:
> c75a3a87-c6f9-30ff-9e62-c9b94340d834 GENERAL.CON-PATH:
> /org/freedesktop/NetworkManager/ActiveConnection/1 GENERAL.METERED:
> no (guessed) CAPABILITIES.CARRIER-DETECT: yes
> CAPABILITIES.SPEED: unknown
> CAPABILITIES.IS-SOFTWARE: no WIRED-PROPERTIES.CARRIER:
> on CONNECTIONS.AVAILABLE-CONNECTION-PATHS:
> /org/freedesktop/NetworkManager/Settings/{11}
> CONNECTIONS.AVAILABLE-CONNECTIONS[1]:
> c75a3a87-c6f9-30ff-9e62-c9b94340d834 | Wired connection 2
> IP4.ADDRESS[1]: 192.168.1.102/24 IP4.GATEWAY:
> 192.168.1.1 IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000 IP4.DNS[1]: 192.168.1.1 DHCP4.OPTION[1]: requested_routers = 1 DHCP4.OPTION[2]: requested_domain_search = 1 DHCP4.OPTION[3]: requested_time_offset = 1
> DHCP4.OPTION[4]: requested_domain_name = 1
> DHCP4.OPTION[5]:
> requested_rfc3442_classless_static_routes = 1 DHCP4.OPTION[6]:
> requested_broadcast_address = 1 DHCP4.OPTION[7]:
> requested_netbios_scope = 1 DHCP4.OPTION[8]:
> requested_wpad = 1 DHCP4.OPTION[9]: next_server
> = 0.0.0.0 DHCP4.OPTION[10]: expiry = 1499347549 DHCP4.OPTION[11]: requested_interface_mtu = 1
> DHCP4.OPTION[12]: requested_subnet_mask = 1
> DHCP4.OPTION[13]: dhcp_lease_time = 28800
> DHCP4.OPTION[14]: dhcp_message_type = 5
> DHCP4.OPTION[15]: ip_address = 192.168.1.102
> DHCP4.OPTION[16]: requested_static_routes = 1
> DHCP4.OPTION[17]: requested_domain_name_servers
> = 1 DHCP4.OPTION[18]: routers = 192.168.1.1 DHCP4.OPTION[19]: broadcast_address =
> 192.168.1.255 DHCP4.OPTION[20]: requested_ntp_servers = 1 DHCP4.OPTION[21]:
> requested_netbios_name_servers = 1 DHCP4.OPTION[22]:
> domain_name_servers = 192.168.1.1 192.168.1.1 DHCP4.OPTION[23]:
> requested_ms_classless_static_routes = 1 DHCP4.OPTION[24]:
> subnet_mask = 255.255.255.0 DHCP4.OPTION[25]:
> network_number = 192.168.1.0 DHCP4.OPTION[26]:
> requested_host_name = 1 DHCP4.OPTION[27]:
> dhcp_server_identifier = 192.168.1.1 IP6.ADDRESS[1]:
> 2405:204:d482:706c:58ae:92de:cd4:3538/64 IP6.ADDRESS[2]:
> 2405:204:d482:706c:b13e:6d29:eac:a886/64 IP6.ADDRESS[3]:
> fe80::890f:f4f4:5a72:5e4a/64 IP6.GATEWAY:
> fe80::e812:5bff:fedc:76cc
>
> GENERAL.DEVICE: eno1 GENERAL.TYPE:
> ethernet GENERAL.NM-TYPE: NMDeviceEthernet
> GENERAL.VENDOR: Realtek Semiconductor Co.,
> Ltd. GENERAL.PRODUCT: RTL8101/2/6E PCI Express
> Fast/Gigabit Ethernet controller GENERAL.DRIVER:
> r8169 GENERAL.DRIVER-VERSION: 2.3LK-NAPI
> GENERAL.FIRMWARE-VERSION: rtl8106e-2_0.0.1 04/23/13
> GENERAL.HWADDR: <MAC 'eno1' [IF1]>
> GENERAL.MTU: 1500 GENERAL.STATE:
> 20 (unavailable) GENERAL.REASON: 2 (Device is
> now managed) GENERAL.UDI:
> /sys/devices/pci0000:00/0000:00:1c.3/0000:08:00.0/net/eno1
> GENERAL.IP-IFACE: GENERAL.IS-SOFTWARE:
> no GENERAL.NM-MANAGED: yes GENERAL.AUTOCONNECT:
> yes GENERAL.FIRMWARE-MISSING: no
> GENERAL.NM-PLUGIN-MISSING: no GENERAL.PHYS-PORT-ID:
> -- GENERAL.CONNECTION: -- GENERAL.CON-UUID: -- GENERAL.CON-PATH: -- GENERAL.METERED: unknown CAPABILITIES.CARRIER-DETECT: yes
> CAPABILITIES.SPEED: unknown
> CAPABILITIES.IS-SOFTWARE: no WIRED-PROPERTIES.CARRIER:
> off CONNECTIONS.AVAILABLE-CONNECTION-PATHS:
>
> ##### NetworkManager.state ##############
>
> [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true
>
> ##### NetworkManager.conf ###############
>
> [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq
>
> [ifupdown] managed=false
>
> ##### NetworkManager profiles ###########
>
> [[/etc/NetworkManager/system-connections/umi 1]] (600 root)
> [connection] id=umi 1 | type=wifi | permissions=user:umi:; [wifi]
> mac-address=<MAC address> | mac-address-blacklist= | ssid=umi [ipv4]
> method=auto [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/JioFi2_E6BB27]] (600 root)
> [connection] id=JioFi2_E6BB27 | type=wifi | permissions=user:umi:;
> [wifi] mac-address=<MAC address> | mac-address-blacklist= |
> ssid=JioFi2_E6BB27 [ipv4] method=auto [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/MIFRAH_Jio]] (600 root)
> [connection] id=MIFRAH_Jio | type=wifi | permissions=user:umi:; [wifi]
> mac-address=<MAC address> | mac-address-blacklist= | ssid=MIFRAH_Jio
> [ipv4] method=auto [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/MBLAZE-DF800i-5979]] (600
> root) [connection] id=MBLAZE-DF800i-5979 | type=wifi |
> permissions=user:umi:; [wifi] mac-address=<MAC address> |
> mac-address-blacklist= | ssid=MBLAZE-DF800i-5979 [ipv4] method=auto
> [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/JioFi3_6A369D]] (600 root)
> [connection] id=JioFi3_6A369D | type=wifi | permissions=user:umi:;
> [wifi] mac-address=<MAC address> | mac-address-blacklist= |
> ssid=JioFi3_6A369D [ipv4] method=auto [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/Lenovo A7000-a]] (600 root)
> [connection] id=Lenovo A7000-a | type=wifi | permissions=user:umi:;
> [wifi] mac-address=<MAC address> | mac-address-blacklist= |
> ssid=Lenovo A7000-a [ipv4] method=auto [ipv6] method=auto
>
> [[/etc/NetworkManager/system-connections/umi]] (600 root) [connection]
> id=umi | type=wifi | permissions=user:umi:; [wifi] mac-address=<MAC
> address> | mac-address-blacklist= | ssid=umi [ipv4] method=auto [ipv6]
> method=auto
>
> [[/etc/NetworkManager/system-connections/tARgarYeN]] (600 root)
> [connection] id=tARgarYeN | type=wifi | permissions=user:umi:; [wifi]
> mac-address=<MAC address> | mac-address-blacklist= | ssid=tARgarYeN
> [ipv4] method=auto [ipv6] method=auto
>
> ##### iw reg get ########################
>
> Region: Asia/Kolkata (based on set time zone)
>
> country 00: DFS-UNSET (2402 - 2472 @ 40), (6, 20), (N/A) (2457 -
> 2482 @ 20), (6, 20), (N/A), PASSIVE-SCAN (2474 - 2494 @ 20), (6, 20),
> (N/A), NO-OFDM, PASSIVE-SCAN (5170 - 5250 @ 80), (6, 20), (N/A),
> PASSIVE-SCAN (5250 - 5330 @ 80), (6, 20), (0 ms), DFS, PASSIVE-SCAN
> (5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN (5735 - 5835
> @ 80), (6, 20), (N/A), PASSIVE-SCAN (57240 - 63720 @ 2160), (N/A, 0),
> (N/A)
>
> ##### iwlist channels ###################
>
> eno1 no frequency information.
>
> lo no frequency information.
>
> enx<IF from MAC [IF2]> no frequency information.
>
> ##### iwlist scan #######################
>
> eno1 Interface doesn't support scanning.
>
> lo Interface doesn't support scanning.
>
> enx<IF from MAC [IF2]> Interface doesn't support scanning.
>
> ##### module infos ######################
>
> ##### module parameters #################
>
> ##### /etc/modules ######################
>
> ##### modprobe options ##################
>
> [/etc/modprobe.d/blacklist-ath_pci.conf] blacklist ath_pci
>
> [/etc/modprobe.d/blacklist.conf] blacklist evbug blacklist usbmouse
> blacklist usbkbd blacklist eepro100 blacklist de4x5 blacklist eth1394
> blacklist snd_intel8x0m blacklist snd_aw2 blacklist i2c_i801 blacklist
> prism54
>
> blacklist bcm43xx blacklist garmin_gps blacklist asus_acpi blacklist
> snd_pcsp blacklist pcspkr blacklist amd76x_edac
>
> [/etc/modprobe.d/blacklist-rare-network.conf] alias net-pf-3 off alias
> net-pf-6 off alias net-pf-9 off alias net-pf-11 off alias net-pf-12
> off alias net-pf-19 off alias net-pf-21 off alias net-pf-36 off
>
> [/etc/modprobe.d/intel-microcode-blacklist.conf] blacklist microcode
>
> [/etc/modprobe.d/iwlwifi.conf] remove iwlwifi \ (/sbin/lsmod | grep -o
> -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211
>
> [/etc/modprobe.d/mlx4.conf] softdep mlx4_core post: mlx4_en
>
> ##### rc.local ##########################
>
> exit 0
>
> ##### pm-utils ##########################
>
> ##### udev rules ########################
>
> ##### dmesg #############################
>
> [ 695.446408] rndis_host 1-2:1.0 eth0: register 'rndis_host' at
> usb-0000:00:14.0-2, RNDIS device, <MAC 'enx<IF from MAC [IF2]>' [IF2]>
> [ 695.490758] rndis_host 1-2:1.0 enx<IF from MAC [IF2]>: renamed from
> eth0 [ 695.512718] IPv6: ADDRCONF(NETDEV_UP): enx<IF from MAC [IF2]>:
> link is not ready
>
> ########## wireless info END ############
尝试过这个解决方案https://askubuntu.com/a/475579/708177仍然没用。。有人可以帮帮我吗。。我是 Linux 新手。。
提前致谢..
答案1
我在 Compaq CQ62 上运行 Ubuntu 16.04，该机器带有 RTL8191SEvA 无线局域网控制器，并且像您一样带有 RTL8101/2/6E PCI Express 快速/千兆以太网控制器。当我的 WiFi 挂断时，我会以 root 身份使用以下命令删除/重新插入内核模块。这些命令在重启后不会保留，因此如果它们使情况变得更糟，只需重启即可。使用它lsmod | more可以了解内核中加载了哪些模块，并查看是否存在 rtlwifi。
netstat -rn # Note the gateway address for destination 0.0.0.0
systemctl stop network-manager
ip link set wlo1 down
ip link set lo down
modprobe -r rtl8192se
modprobe -r rtl_pci
modprobe -r rtlwifi
modprobe -r mac80211
modprobe -r cfg80211
# Then reinsert the modules and rebuild the network interfaces
modprobe cfg80211
modprobe mac80211
modprobe rtlwifi
modprobe rtl_pci
modprobe rtl8192se
ip link set lo up
ip link set wlo1 up
systemctl start network-manager
ip route add default via 192.168.0.1 # but use your gateway address
ps -e | grep -q nm-applet || nm-applet &
当然，您的 WiFi 控制器可能不受 Linux 支持。