我无法在小程序上获取 WIFI 连接。我认为当我升级到 14.04.5 并自动删除以前的内核版本时，重新启动后会出现此问题，因为之前它可以正常工作。
附加无线信息
########## wireless info START ##########
Report from: 30 Aug 2017 13:26 IST +0530
Booted last: 30 Aug 2017 11:56 IST +0530
Script from: 25 Mar 2017 07:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
##### kernel ############################
Linux 3.13.0-129-generic #178-Ubuntu SMP Fri Aug 11 12:48:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
07:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 07)
Subsystem: Dell Device [1028:0558]
Kernel driver in use: r8169
##### lsusb #############################
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0c45:6473 Microdia
Bus 001 Device 010: ID 0781:5567 SanDisk Corp. Cruzer Blade
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
##### lsmod #############################
dell_wmi 12761 0
sparse_keymap 13948 1 dell_wmi
dell_laptop 18133 0
dcdbas 14928 1 dell_laptop
wmi 19177 1 dell_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [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)
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:77734305 errors:0 dropped:0 overruns:0 frame:0
TX packets:77734305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5713765440 (5.7 GB) TX bytes:5713765440 (5.7 GB)
##### iwconfig ##########################
eth0 no wireless extensions.
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
##### resolv.conf #######################
##### network managers ##################
Installed:
NetworkManager
Running:
root 834 1 0 11:56 ? 00:00:01 NetworkManager
##### NetworkManager info ###############
NetworkManager Tool
State: disconnected
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: <MAC 'eth0' [IF1]>
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/GUPTA PROPERTY]] (600 root)
[connection] id=GUPTA PROPERTY | type=802-11-wireless
[802-11-wireless] ssid=GUPTA PROPERTY | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/vivo Y51L]] (600 root)
[connection] id=vivo Y51L | type=802-11-wireless
[802-11-wireless] ssid=vivo Y51L | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Neelu's iPhone]] (600 root)
[connection] id=Neelu's iPhone | type=802-11-wireless
[802-11-wireless] ssid=Neelu's iPhone | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Vijay]] (600 root)
[connection] id=Vijay | type=802-11-wireless
[802-11-wireless] ssid=Vijay | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Anjali jio]] (600 root)
[connection] id=Anjali jio | type=802-11-wireless
[802-11-wireless] ssid=Anjali jio | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Vipul Gulati]] (600 root)
[connection] id=Vipul Gulati | type=802-11-wireless
[802-11-wireless] ssid=Vipul Gulati | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MBLAZE-AC3633R2-2775]] (600 root)
[connection] id=MBLAZE-AC3633R2-2775 | type=802-11-wireless
[802-11-wireless] ssid=MBLAZE-AC3633R2-2775 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/WPJaipur]] (600 root)
[connection] id=WPJaipur | type=802-11-wireless
[802-11-wireless] ssid=WPJaipur | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/MBLAZE-AC3633R2-A6DE]] (600 root)
[connection] id=MBLAZE-AC3633R2-A6DE | type=802-11-wireless
[802-11-wireless] ssid=MBLAZE-AC3633R2-A6DE | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/DIRECT-M6-BRAVIA]] (600 root)
[connection] id=DIRECT-M6-BRAVIA | type=802-11-wireless
[802-11-wireless] ssid=DIRECT-M6-BRAVIA | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/edubot]] (600 root)
[connection] id=edubot | type=802-11-wireless
[802-11-wireless] ssid=edubot | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Kunal’s iPhone]] (600 root)
[connection] id=Kunal’s iPhone | type=802-11-wireless
[802-11-wireless] ssid=75;117;110;97;108;226;128;153;115;32;105;80;104;111;110;101; | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Classic mayur]] (600 root)
[connection] id=Classic mayur | type=802-11-wireless
[802-11-wireless] ssid=Classic mayur | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/dude]] (600 root)
[connection] id=dude | type=802-11-wireless
[802-11-wireless] ssid=dude | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Royal Park]] (600 root)
[connection] id=Royal Park | type=802-11-wireless
[802-11-wireless] ssid=Royal Park | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/iris402+]] (600 root)
[connection] id=iris402+ | type=802-11-wireless
[802-11-wireless] ssid=iris402+ | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Android ap]] (600 root)
[connection] id=Android ap | type=802-11-wireless
[802-11-wireless] ssid=Android ap | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Bsnl]] (600 root)
[connection] id=Bsnl | type=802-11-wireless
[802-11-wireless] ssid=Bsnl | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Le Royal Park]] (600 root)
[connection] id=Le Royal Park | type=802-11-wireless
[802-11-wireless] ssid=Le Royal Park | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MBLAZE-AC3633-5918]] (600 root)
[connection] id=MBLAZE-AC3633-5918 | type=802-11-wireless
[802-11-wireless] ssid=MBLAZE-AC3633-5918 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Harshit]] (600 root)
[connection] id=Harshit | type=802-11-wireless
[802-11-wireless] ssid=Harshit | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/rajmahal roms]] (600 root)
[connection] id=rajmahal roms | type=802-11-wireless
[802-11-wireless] ssid=rajmahal roms | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Advantage Homez F]] (600 root)
[connection] id=Advantage Homez F | type=802-11-wireless
[802-11-wireless] ssid=Advantage Homez F | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Diplomat]] (600 root)
[connection] id=Diplomat | type=802-11-wireless
[802-11-wireless] ssid=Diplomat | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/preferinn1]] (600 root)
[connection] id=preferinn1 | type=802-11-wireless
[802-11-wireless] ssid=preferinn1 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/JDS G*F]] (600 root)
[[/etc/NetworkManager/system-connections/TIARA]] (600 root)
[connection] id=TIARA | type=802-11-wireless
[802-11-wireless] ssid=TIARA | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/The Forest]] (600 root)
[connection] id=The Forest | type=802-11-wireless
[802-11-wireless] ssid=The Forest | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Blth-aHJpdGlrc2luZ2g5MTI]] (600 root)
[connection] id=Blth-aHJpdGlrc2luZ2g5MTI | type=802-11-wireless
[802-11-wireless] ssid=Blth-aHJpdGlrc2luZ2g5MTI | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/chaddas]] (600 root)
[connection] id=chaddas | type=802-11-wireless
[802-11-wireless] ssid=chaddas | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Moto G (5) 7720]] (600 root)
[connection] id=Moto G (5) 7720 | type=802-11-wireless
[802-11-wireless] ssid=Moto G (5) 7720 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/XT1033 2589]] (600 root)
[connection] id=XT1033 2589 | type=802-11-wireless
[802-11-wireless] ssid=XT1033 2589 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/3musketeers]] (600 root)
[connection] id=3musketeers | type=802-11-wireless
[802-11-wireless] ssid=3musketeers | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Airtel-MW40-D027]] (600 root)
[connection] id=Airtel-MW40-D027 | type=802-11-wireless
[802-11-wireless] ssid=Airtel-MW40-D027 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/XT1562 4102]] (600 root)
[connection] id=XT1562 4102 | type=802-11-wireless
[802-11-wireless] ssid=XT1562 4102 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/JDS S*F]] (600 root)
[[/etc/NetworkManager/system-connections/Idea-Smartwifi-42a9]] (600 root)
[connection] id=Idea-Smartwifi-42a9 | type=802-11-wireless
[802-11-wireless] ssid=Idea-Smartwifi-42a9 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Canon_ij_Setup]] (600 root)
[connection] id=Canon_ij_Setup | type=802-11-wireless
[802-11-wireless] ssid=Canon_ij_Setup | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/ADYYMTAwTlU]] (600 root)
[connection] id=ADYYMTAwTlU | type=802-11-wireless
[802-11-wireless] ssid=ADYYMTAwTlU | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/iamkhush]] (600 root)
[connection] id=iamkhush | type=802-11-wireless
[802-11-wireless] ssid=iamkhush | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Ankush]] (600 root)
[connection] id=Ankush | type=802-11-wireless
[802-11-wireless] ssid=Ankush | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/BSNL_AP]] (600 root)
[connection] id=BSNL_AP | type=802-11-wireless
[802-11-wireless] ssid=BSNL_AP | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/JioFi2_CA6674]] (600 root)
[connection] id=JioFi2_CA6674 | type=802-11-wireless
[802-11-wireless] ssid=JioFi2_CA6674 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/JioFi2_C5B034]] (600 root)
[connection] id=JioFi2_C5B034 | type=802-11-wireless
[802-11-wireless] ssid=JioFi2_C5B034 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Digisol]] (600 root)
[connection] id=Digisol | type=802-11-wireless
[802-11-wireless] ssid=Digisol | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Airtel_Zerotouch]] (600 root)
[connection] id=Airtel_Zerotouch | type=802-11-wireless
[802-11-wireless] ssid=Airtel_Zerotouch | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/AndroidAP]] (600 root)
[connection] id=AndroidAP | type=802-11-wireless
[802-11-wireless] ssid=AndroidAP | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/thedude]] (600 root)
[connection] id=thedude | type=802-11-wireless
[802-11-wireless] ssid=thedude | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/ramesh wifi]] (600 root)
[connection] id=ramesh wifi | type=802-11-wireless
[802-11-wireless] ssid=ramesh wifi | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Country Inn By carlson]] (600 root)
[connection] id=Country Inn By carlson | type=802-11-wireless
[802-11-wireless] ssid=Country Inn By carlson | mac-address=<MAC address>
[ipv6] method=auto
[ipv4] method=auto
[[/etc/NetworkManager/system-connections/NETGEAR]] (600 root)
[connection] id=NETGEAR | type=802-11-wireless
[802-11-wireless] ssid=NETGEAR | bssid=<MAC address> | mac-address=9C:2A:70:CD:82:07
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Desi_Boys]] (600 root)
[connection] id=Desi_Boys | type=802-11-wireless
[802-11-wireless] ssid=Desi_Boys | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/MotoG3 2783]] (600 root)
[connection] id=MotoG3 2783 | type=802-11-wireless
[802-11-wireless] ssid=MotoG3 2783 | mac-address=<MAC address>
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Asia/Kolkata (based on set time zone)
country 00:
(2402 - 2472 @ 40), (6, 20)
(2457 - 2482 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 160), (6, 20), PASSIVE-SCAN, NO-IBSS
(5250 - 5330 @ 160), (6, 20), DFS, PASSIVE-SCAN, NO-IBSS
(5490 - 5730 @ 160), (6, 20), DFS, PASSIVE-SCAN, NO-IBSS
##### iwlist channels ###################
eth0 no frequency information.
lo no frequency information.
##### iwlist scan #######################
eth0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
##### module parameters #################
##### /etc/modules ######################
lp
rtc
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma
[/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/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 ########################
[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF1]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# USB device 0x:0x (cdc_ether)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
# PCI device 0x14e4:0x4365 (wl)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
# USB device 0x:0x (cdc_ether)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"
# USB device 0x:0x (cdc_ether)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3"
##### dmesg #############################
########## wireless info END ############
我没有检查以太网，因为我不使用它。我尝试sudo apt-get purge bcmwl-kernel-source
使用离线模式安装了“bcmwl-kernel-source_6.30.223.141+bdcom-0ubuntu_amd64.deb”。
不确定该如何继续。
编辑1：
$ sudo modprobe wl
modprobe: Fatal: Module wl not found
编辑2：
$ sudo dpkg -i bcmwl-kernel-source_6.30.223.141+bdcom-0ubuntu2_amd64.deb
Selecting previously unselected package bcmwl-kernel-source.
(Reading database ... 242345 files and directories currently installed.)
Preparing to unpack bcmwl-kernel-source_6.30.223.141+bdcom-0ubuntu2_amd64.deb ...
Unpacking bcmwl-kernel-source (6.30.223.141+bdcom-0ubuntu2) ...
Setting up bcmwl-kernel-source (6.30.223.141+bdcom-0ubuntu2) ...
Loading new bcmwl-6.30.223.141+bdcom DKMS files...
First Installation: checking all kernels...
Building only for 3.13.0-129-generic
Building for architecture x86_64
Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed.
modprobe: FATAL: Module wl not found.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.103ubuntu4.7) ...
update-initramfs: Generating /boot/initrd.img-3.13.0-129-generic
答案1
看起来你删除了内核的头文件
安装这些软件包：
http://mirrors.kernel.org/ubuntu/pool/main/l/linux/linux-headers-3.13.0-129_3.13.0-129.178_all.deb
然后重新安装bcmwl-kernel-source
Wi-Fi 应该开始工作，然后运行
sudo apt-get update
sudo apt-get install linux-generic
该系统应当被修复。
并且不要再删除错误的包。