Jtdcftul

i recently installed ubuntu 18.04 on a lenovo yoga 2 (not pro) and i cant seem to get the wifi on .
in wifi settings it says

       **No wifi adapter found

        make sure you have wifi adapter pluged in.**

the wifi was working fine on windows 10 and i have checked bios its enabled their as well. thank you all in advance for your help.
i have attatched the information from my wireless-info.txt file.

########## wireless info START ##########



Report from: 03 Mar 2019 01:40 PKT +0500



Booted last: 03 Mar 2019 00:00 PKT +0500



Script from: 22 Oct 2018 03:34 UTC +0000



##### release ###########################



Distributor ID: Ubuntu

Description:    Ubuntu 18.04.2 LTS

Release:    18.04

Codename:   bionic



##### kernel ############################



Linux 4.18.0-15-generic #16~18.04.1-Ubuntu SMP Thu Feb 7 14:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux



Parameters: ro, quiet, splash, vt.handoff=1



##### desktop ###########################



Ubuntu



##### lspci #############################



01:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)

    Subsystem: Lenovo BCM4352 802.11ac Wireless Network Adapter [17aa:0623]

    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 007: ID 048d:8350 Integrated Technology Express, Inc. 

Bus 002 Device 006: ID 0489:e07a Foxconn / Hon Hai 

Bus 002 Device 005: ID 04f2:b40f Chicony Electronics Co., Ltd 

Bus 002 Device 004: ID 04f3:0303 Elan Microelectronics Corp. 

Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller

Bus 002 Device 002: ID 0489:c022 Foxconn / Hon Hai 

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



##### secure boot #######################



SecureBoot enabled



##### lsmod #############################



cfg80211              667648  0

ideapad_laptop         32768  0

sparse_keymap          16384  1 ideapad_laptop

wmi                    24576  1 ideapad_laptop

video                  45056  2 ideapad_laptop,i915



##### interfaces ########################



[/etc/network/interfaces]

auto lo

iface lo inet loopback



##### ifconfig ##########################



1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000

    link/loopback <MAC address> brd <MAC address>

    inet 127.0.0.1/8 scope host lo

       valid_lft forever preferred_lft forever

    inet6 ::1/128 scope host 

       valid_lft forever preferred_lft forever

2: enp0s20u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000

    link/ether <MAC 'enp0s20u1' [IF1]> brd <MAC address>

    inet 192.168.42.27/24 brd 192.168.42.255 scope global dynamic noprefixroute enp0s20u1

       valid_lft 2179sec preferred_lft 2179sec

    inet6 fe80::fe14:b94d:8d1c:5821/64 scope link noprefixroute 

       valid_lft forever preferred_lft forever



##### iwconfig ##########################



lo        no wireless extensions.



enp0s20u1  no wireless extensions.



##### route #############################



default via 192.168.42.129 dev enp0s20u1 proto dhcp metric 100 

169.254.0.0/16 dev enp0s20u1 scope link metric 1000 

192.168.42.0/24 dev enp0s20u1 proto kernel scope link src 192.168.42.27 metric 100 



##### resolv.conf #######################



[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']



nameserver 127.0.0.53

options edns0



##### network managers ##################



Installed:



    NetworkManager



Running:



root       690     1  0 01:16 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon



##### NetworkManager info ###############



GENERAL.DEVICE:                         enp0s20u1

GENERAL.TYPE:                           ethernet

GENERAL.NM-TYPE:                        NMDeviceEthernet

GENERAL.VENDOR:                         HMD Global

GENERAL.PRODUCT:                        Nokia 6.1 Plus

GENERAL.DRIVER:                         rndis_host

GENERAL.DRIVER-VERSION:                 22-Aug-2005

GENERAL.FIRMWARE-VERSION:               RNDIS device

GENERAL.HWADDR:                         <MAC 'enp0s20u1' [IF1]>

GENERAL.MTU:                            1500

GENERAL.STATE:                          100 (connected)

GENERAL.REASON:                         0 (No reason given)

GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1:1.0/net/enp0s20u1

GENERAL.IP-IFACE:                       enp0s20u1

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:                       2b31f589-069d-3749-8baa-d6d34db117f7

GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1

GENERAL.METERED:                        yes (guessed)

CAPABILITIES.CARRIER-DETECT:            yes

CAPABILITIES.SPEED:                     unknown

CAPABILITIES.IS-SOFTWARE:               no

CAPABILITIES.SRIOV:                     no

WIRED-PROPERTIES.CARRIER:               on

IP4.ADDRESS[1]:                         192.168.42.27/24

IP4.GATEWAY:                            192.168.42.129

IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.42.129, mt = 100

IP4.ROUTE[2]:                           dst = 192.168.42.0/24, nh = 0.0.0.0, mt = 100

IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000

IP4.DNS[1]:                             192.168.42.129

DHCP4.OPTION[1]:                        dhcp_rebinding_time = 3150

DHCP4.OPTION[2]:                        requested_domain_search = 1

DHCP4.OPTION[3]:                        vendor_encapsulated_options = ANDROID_METERED

DHCP4.OPTION[4]:                        network_number = 192.168.42.0

DHCP4.OPTION[5]:                        requested_broadcast_address = 1

DHCP4.OPTION[6]:                        requested_domain_name = 1

DHCP4.OPTION[7]:                        requested_rfc3442_classless_static_routes = 1

DHCP4.OPTION[8]:                        requested_time_offset = 1

DHCP4.OPTION[9]:                        requested_wpad = 1

DHCP4.OPTION[10]:                       expiry = 1551561396

DHCP4.OPTION[11]:                       next_server = 192.168.42.129

DHCP4.OPTION[12]:                       broadcast_address = 192.168.42.255

DHCP4.OPTION[13]:                       dhcp_message_type = 5

DHCP4.OPTION[14]:                       requested_subnet_mask = 1

DHCP4.OPTION[15]:                       dhcp_lease_time = 3600

DHCP4.OPTION[16]:                       ip_address = 192.168.42.27

DHCP4.OPTION[17]:                       requested_static_routes = 1

DHCP4.OPTION[18]:                       requested_domain_name_servers = 1

DHCP4.OPTION[19]:                       dhcp_renewal_time = 1800

DHCP4.OPTION[20]:                       routers = 192.168.42.129

DHCP4.OPTION[21]:                       requested_netbios_scope = 1

DHCP4.OPTION[22]:                       domain_name_servers = 192.168.42.129

DHCP4.OPTION[23]:                       requested_ntp_servers = 1

DHCP4.OPTION[24]:                       requested_netbios_name_servers = 1

DHCP4.OPTION[25]:                       requested_routers = 1

DHCP4.OPTION[26]:                       requested_ms_classless_static_routes = 1

DHCP4.OPTION[27]:                       requested_interface_mtu = 1

DHCP4.OPTION[28]:                       requested_host_name = 1

DHCP4.OPTION[29]:                       dhcp_server_identifier = 192.168.42.129

DHCP4.OPTION[30]:                       subnet_mask = 255.255.255.0

IP6.ADDRESS[1]:                         fe80::fe14:b94d:8d1c:5821/64

IP6.GATEWAY:                            --

IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255

IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256

IP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100

CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1}

CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   2b31f589-069d-3749-8baa-d6d34db117f7 | Wired connection 1



##### NetworkManager.state ##############



[main]

NetworkingEnabled=true

WirelessEnabled=true

WWANEnabled=true



##### NetworkManager config #############



[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]

[connection]

wifi.powersave = 3



[[/etc/NetworkManager/NetworkManager.conf]]

[main]

plugins=ifupdown,keyfile

[ifupdown]

managed=false

[device]

wifi.scan-rand-mac-address=no



[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]

[main]

dns=systemd-resolved



[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]

[keyfile]

unmanaged-devices=*,except:type:wifi,except:type:wwan



[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]

[connectivity]

uri=http://connectivity-check.ubuntu.com/



[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]

[device-mac-addr-change-wifi]

match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl

wifi.scan-rand-mac-address=no

wifi.cloned-mac-address=preserve

ethernet.cloned-mac-address=preserve



##### NetworkManager profiles ###########



##### Netplan config ####################



[/etc/netplan/01-network-manager-all.yaml]

network:

  version: 2

  renderer: NetworkManager



##### iw reg get ########################



Region: Asia/Karachi (based on set time zone)



global

country 00: DFS-UNSET

    (2402 - 2472 @ 40), (N/A, 20), (N/A)

    (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN

    (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN

    (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN

    (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN

    (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN

    (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN

    (57240 - 63720 @ 2160), (N/A, 0), (N/A)



##### iwlist channels ###################



lo        no frequency information.



enp0s20u1  no frequency information.



##### iwlist scan #######################



lo        Interface doesn't support scanning.



enp0s20u1  Interface doesn't support scanning.



##### module infos ######################



[cfg80211]

filename:       /lib/modules/4.18.0-15-generic/kernel/net/wireless/cfg80211.ko

description:    wireless configuration support

license:        GPL

author:         Johannes Berg

srcversion:     BFB309EF7C6C321F605D36E

depends:        

retpoline:      Y

intree:         Y

name:           cfg80211

vermagic:       4.18.0-15-generic SMP mod_unload 

signat:         PKCS#7

signer:         

sig_key:        

sig_hashalgo:   md4

parm:           bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)

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]

bss_entries_limit: 1000

cfg80211_disable_40mhz_24ghz: N

ieee80211_regdom: 00



##### /etc/modules ######################



##### modprobe options ##################



[/etc/modprobe.d/amd64-microcode-blacklist.conf]

blacklist microcode



[/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/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



##### rc.local ##########################



grep: /etc/rc.local: No such file or directory



##### pm-utils ##########################



##### udev rules ########################



##### dmesg #############################



[    4.994588] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0489-e07a.hcd failed with error -2

[    4.994592] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0489-e07a.hcd not found

[    5.053852] rndis_host 2-1:1.0 enp0s20u1: renamed from usb0

[    5.718092] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1: link is not ready



########## wireless info END ############

Disable Secure Boot in BIOS.

##### lspci #############################



01:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)

    Subsystem: Lenovo BCM4352 802.11ac Wireless Network Adapter [17aa:0623]

    Kernel modules: bcma, wl

This shows that the correct bcmwl-kernel-source as the wl kernel module is installed, but not loaded.

##### secure boot #######################



SecureBoot enabled

It is not loaded because of Secure Boot. You can check it by running

sudo modprobe wl

You an see this question for more details.