Network Manager System tray menu doesn't show option for wifi. It shows airplane mode button but wifi button which should be next to it is missing. I have just installed Kubuntu 16.04 and this problem is there since the install. I got a detailed analysis report on computer network by running command:
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info && chmod +x wireless-info && ./wireless-info && kate wireless-info.txt
Result:
########## wireless info START ##########
Report from: 29 Aug 2016 02:03 IST +0530
Booted last: 29 Aug 2016 00:00 IST +0530
Script from: 08 Jul 2016 02:16 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
/usr/share/xsessions/plasma
##### lspci #############################
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:380a]
Kernel driver in use: r8169
02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Lenovo BCM43142 802.11b/g/n [17aa:0621]
Kernel modules: bcma, wl
##### lsusb #############################
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 105b:e065 Foxconn International, Inc. BCM43142A0 Bluetooth module
Bus 002 Device 004: ID 5986:055d Acer, Inc
Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 002 Device 021: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### lsmod #############################
cfg80211 565248 0
snd_soc_rt5640 114688 0
snd_soc_rl6231 16384 1 snd_soc_rt5640
snd_soc_core 212992 1 snd_soc_rt5640
snd_pcm 106496 7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_pcm_dmaengine,snd_hda_core
ideapad_laptop 24576 0
sparse_keymap 16384 1 ideapad_laptop
wmi 20480 1 ideapad_laptop
video 40960 2 i915,ideapad_laptop
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
enp1s0 Link encap:Ethernet HWaddr <MAC 'enp1s0' [IF1]>
inet addr:10.100.96.21 Bcast:10.100.96.255 Mask:255.255.255.0
inet6 addr: fe80::f122:aaa3:b379:30a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:123264 errors:0 dropped:0 overruns:0 frame:0
TX packets:76442 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:148168672 (148.1 MB) TX bytes:6745965 (6.7 MB)
##### iwconfig ##########################
lo no wireless extensions.
enp1s0 no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.100.96.4 0.0.0.0 UG 100 0 0 enp1s0
10.100.56.21 10.100.96.4 255.255.255.255 UGH 100 0 0 enp1s0
10.100.96.0 0.0.0.0 255.255.255.0 U 100 0 0 enp1s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enp1s0
##### resolv.conf #######################
nameserver 127.0.1.1
search rukus.daiict.ac.in
##### network managers ##################
Installed:
NetworkManager
Running:
root 2497 1 0 00:11 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp1s0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION:
GENERAL.HWADDR: <MAC 'enp1s0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/enp1s0
GENERAL.IP-IFACE: enp1s0
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 1
GENERAL.CON-UUID: 7c0db5ef-249f-422a-8159-0f7cdb7b77d4
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/0
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 100 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 7c0db5ef-249f-422a-8159-0f7cdb7b77d4 | Wired connection 1
IP4.ADDRESS[1]: 10.100.96.21/24
IP4.GATEWAY: 10.100.96.4
IP4.ROUTE[1]: dst = 10.100.56.21/32, nh = 10.100.96.4, mt = 100
IP4.ROUTE[2]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 10.100.56.27
IP4.DNS[2]: 10.100.56.25
IP4.DNS[3]: 10.100.56.40
IP4.DOMAIN[1]: rukus.daiict.ac.in
IP4.WINS[1]: 10.100.56.21
IP4.WINS[2]: 10.100.56.15
DHCP4.OPTION[1]: requested_subnet_mask = 1
DHCP4.OPTION[2]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[3]: subnet_mask = 255.255.255.0
DHCP4.OPTION[4]: domain_name_servers = 10.100.56.27 10.100.56.25 10.100.56.40
DHCP4.OPTION[5]: ip_address = 10.100.96.21
DHCP4.OPTION[6]: filename = bpbatch
DHCP4.OPTION[7]: requested_static_routes = 1
DHCP4.OPTION[8]: dhcp_server_identifier = 10.100.56.21
DHCP4.OPTION[9]: netbios_name_servers = 10.100.56.21 10.100.56.15
DHCP4.OPTION[10]: requested_time_offset = 1
DHCP4.OPTION[11]: broadcast_address = 10.100.96.255
DHCP4.OPTION[12]: requested_interface_mtu = 1
DHCP4.OPTION[13]: dhcp_rebinding_time = 37800
DHCP4.OPTION[14]: requested_domain_name_servers = 1
DHCP4.OPTION[15]: dhcp_message_type = 5
DHCP4.OPTION[16]: requested_broadcast_address = 1
DHCP4.OPTION[17]: routers = 10.100.96.4
DHCP4.OPTION[18]: dhcp_renewal_time = 21600
DHCP4.OPTION[19]: requested_domain_name = 1
DHCP4.OPTION[20]: domain_name = rukus.daiict.ac.in
DHCP4.OPTION[21]: requested_routers = 1
DHCP4.OPTION[22]: expiry = 1472452891
DHCP4.OPTION[23]: requested_wpad = 1
DHCP4.OPTION[24]: requested_netbios_scope = 1
DHCP4.OPTION[25]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[26]: requested_netbios_name_servers = 1
DHCP4.OPTION[27]: network_number = 10.100.96.0
DHCP4.OPTION[28]: requested_domain_search = 1
DHCP4.OPTION[29]: vendor_encapsulated_options = 10.100.56.85
DHCP4.OPTION[30]: requested_ntp_servers = 1
DHCP4.OPTION[31]: dhcp_lease_time = 43200
DHCP4.OPTION[32]: requested_host_name = 1
DHCP4.OPTION[33]: next_server = 10.100.56.18
IP6.ADDRESS[1]: fe80::f122:aaa3:b379:30a/64
IP6.GATEWAY:
##### 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/Hotspot]] (600 root)
[connection] id=Hotspot | type=wifi | autoconnect=false | permissions=user:parth:;
[wifi] mac-address-blacklist= | ssid=CyberKnight
[ipv4] method=shared
[ipv6] method=auto
##### iw reg get ########################
Region: Asia/Kolkata (based on set time zone)
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
lo no frequency information.
enp1s0 no frequency information.
##### iwlist scan #######################
lo Interface doesn't support scanning.
enp1s0 Interface doesn't support scanning.
##### module infos ######################
[cfg80211]
filename: /lib/modules/4.4.0-34-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 25A45701AAA64DAC1E47D9D
depends:
intree: Y
vermagic: 4.4.0-34-generic SMP mod_unload modversions
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
##### 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 ########################
##### dmesg #############################
[ 24.659458] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[ 24.659466] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[ 24.704132] r8169 0000:01:00.0 enp1s0: link up
[ 24.704142] IPv6: ADDRCONF(NETDEV_CHANGE): enp1s0: link becomes ready
########## wireless info END ############
Please help me as I am unable to access wifi networks on Kubuntu but they work perfectly fine on windows 10 which is dual booted with Kubuntu. Can anybody suggest a solution?
** I don't refrain from saying that this is not a duplicate question, but being a new user it is difficult for me to relate between wifi problem and the question about "Required key not available". Nevertheless, my issue is resolved and Thanks a lot for help! :)
sudo modprobe wl? Welcome to askubuntu. – chili555 Aug 27 '16 at 21:26