I need some help.
I installed Ubuntu 20.04.3 LTS and my WiFi doesn't work "No wifi adapter found".
Its a ASUS Vivobook.
thank you

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



Report from: 11 Jan 2022 15:33 -03 -0300



Booted last: 11 Jan 2022 00:00 -03 -0300



Script from: 25 Jan 2020 03:34 UTC +0000



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



Distributor ID: Ubuntu

Description:    Ubuntu 20.04.3 LTS

Release:    20.04

Codename:   focal



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



Linux 5.11.0-44-generic #48~20.04.2-Ubuntu SMP Tue Dec 14 15:36:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux



Parameters: ro, quiet, splash, vt.handoff=7



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



Ubuntu



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



02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]

    Subsystem: AzureWave RTL8821CE 802.11ac PCIe Wireless Network Adapter [1a3b:3040]

    Kernel modules: rtw88_8821ce



##### lsusb #############################



Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 004: ID 13d3:3529 IMC Networks Bluetooth Radio 

Bus 001 Device 003: ID 13d3:5a11 IMC Networks USB2.0 VGA UVC WebCam

Bus 001 Device 008: ID 2717:ff80 Xiaomi Inc. Mi/Redmi series (RNDIS)

Bus 001 Device 002: ID 045e:07fd Microsoft Corp. Nano Transceiver 1.1

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



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



SecureBoot disabled

Platform is in Setup Mode



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



mac80211             1024000  2 rtw88_pci,rtw88_core

asus_nb_wmi            28672  0

wmi_bmof               16384  0

cfg80211              888832  2 rtw88_core,mac80211

libarc4                16384  1 mac80211

asus_wmi               36864  2 asus_nb_wmi,mfd_aaeon

sparse_keymap          16384  1 asus_wmi

wmi                    32768  3 asus_wmi,wmi_bmof,mfd_aaeon

video                  53248  2 asus_wmi,i915



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



##### 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

3: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000

    link/ether <MAC 'usb0' [IF1]> brd <MAC address>

    inet 192.168.42.82/24 brd 192.168.42.255 scope global dynamic noprefixroute usb0

       valid_lft 3438sec preferred_lft 3438sec

    inet6 fe80::dd41:8e8a:bbda:6417/64 scope link noprefixroute 

       valid_lft forever preferred_lft forever



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



lo        no wireless extensions.



usb0      no wireless extensions.



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



default via 192.168.42.129 dev usb0 proto dhcp metric 100 

169.254.0.0/16 dev usb0 scope link metric 1000 

192.168.42.0/24 dev usb0 proto kernel scope link src 192.168.42.82 metric 100 



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



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



nameserver 127.0.0.53

options edns0 trust-ad



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



Installed:



    NetworkManager



Running:



root         603       1  0 14:42 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon



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



GENERAL.DEVICE:                         usb0

GENERAL.TYPE:                           ethernet

GENERAL.NM-TYPE:                        NMDeviceEthernet

GENERAL.DBUS-PATH:                      /org/freedesktop/NetworkManager/Devices/3

GENERAL.VENDOR:                         Xiaomi Inc.

GENERAL.PRODUCT:                        Mi/Redmi series (RNDIS)

GENERAL.DRIVER:                         rndis_host

GENERAL.DRIVER-VERSION:                 5.11.0-44-generic

GENERAL.FIRMWARE-VERSION:               RNDIS device

GENERAL.HWADDR:                         <MAC 'usb0' [IF1]>

GENERAL.MTU:                            1500

GENERAL.STATE:                          100 (connected)

GENERAL.REASON:                         0 (No reason given)

GENERAL.IP4-CONNECTIVITY:               4 (full)

GENERAL.IP6-CONNECTIVITY:               3 (limited)

GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/net/usb0

GENERAL.IP-IFACE:                       usb0

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:                     Conexão cabeada 1

GENERAL.CON-UUID:                       7b159ce8-f7ad-36e2-adeb-1e2497775dcc

GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/2

GENERAL.METERED:                        yes (guessed)

CAPABILITIES.CARRIER-DETECT:            yes

CAPABILITIES.SPEED:                     unknown

CAPABILITIES.IS-SOFTWARE:               no

CAPABILITIES.SRIOV:                     no

INTERFACE-FLAGS.UP:                     yes

INTERFACE-FLAGS.LOWER-UP:               yes

INTERFACE-FLAGS.CARRIER:                yes

WIRED-PROPERTIES.CARRIER:               on

IP4.ADDRESS[1]:                         192.168.42.82/24

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_lease_time = 3599

DHCP4.OPTION[2]:                        domain_name_servers = 192.168.42.129

DHCP4.OPTION[3]:                        expiry = 1641929468

DHCP4.OPTION[4]:                        host_name = nadine-VivoBook-15-ASUS-Laptop-X540UAR

DHCP4.OPTION[5]:                        ip_address = 192.168.42.82

DHCP4.OPTION[6]:                        next_server = 192.168.42.129

DHCP4.OPTION[7]:                        requested_broadcast_address = 1

DHCP4.OPTION[8]:                        requested_domain_name = 1

DHCP4.OPTION[9]:                        requested_domain_name_servers = 1

DHCP4.OPTION[10]:                       requested_domain_search = 1

DHCP4.OPTION[11]:                       requested_host_name = 1

DHCP4.OPTION[12]:                       requested_interface_mtu = 1

DHCP4.OPTION[13]:                       requested_ms_classless_static_routes = 1

DHCP4.OPTION[14]:                       requested_nis_domain = 1

DHCP4.OPTION[15]:                       requested_nis_servers = 1

DHCP4.OPTION[16]:                       requested_ntp_servers = 1

DHCP4.OPTION[17]:                       requested_rfc3442_classless_static_routes = 1

DHCP4.OPTION[18]:                       requested_root_path = 1

DHCP4.OPTION[19]:                       requested_routers = 1

DHCP4.OPTION[20]:                       requested_static_routes = 1

DHCP4.OPTION[21]:                       requested_subnet_mask = 1

DHCP4.OPTION[22]:                       requested_time_offset = 1

DHCP4.OPTION[23]:                       requested_wpad = 1

DHCP4.OPTION[24]:                       routers = 192.168.42.129

DHCP4.OPTION[25]:                       subnet_mask = 255.255.255.0

IP6.ADDRESS[1]:                         fe80::dd41:8e8a:bbda:6417/64

IP6.GATEWAY:                            --

IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 100

CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/2

CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   7b159ce8-f7ad-36e2-adeb-1e2497775dcc | Conexão cabeada 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:gsm,except:type:cdma



[[/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



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



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



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

network:

  version: 2

  renderer: NetworkManager



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



Region: America/Sao_Paulo (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.



usb0      no frequency information.



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



lo        Interface doesn't support scanning.



usb0      Interface doesn't support scanning.



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



[mac80211]

filename:       /lib/modules/5.11.0-44-generic/kernel/net/mac80211/mac80211.ko

license:        GPL

description:    IEEE 802.11 subsystem

depends:        cfg80211,libarc4

retpoline:      Y

intree:         Y

name:           mac80211

vermagic:       5.11.0-44-generic SMP mod_unload modversions 

parm:           minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)

parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)

parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)

parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)

parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)

parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)



[cfg80211]

filename:       /lib/modules/5.11.0-44-generic/kernel/net/wireless/cfg80211.ko

description:    wireless configuration support

license:        GPL

depends:        

retpoline:      Y

intree:         Y

name:           cfg80211

vermagic:       5.11.0-44-generic SMP mod_unload modversions 

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 #################



[mac80211]

beacon_loss_count: 7

ieee80211_default_rc_algo: minstrel_ht

max_nullfunc_tries: 2

max_probe_tries: 5

minstrel_vht_only: Y

probe_wait_ms: 500



[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.conf]

blacklist evbug

blacklist usbmouse

blacklist usbkbd

blacklist eepro100

blacklist de4x5

blacklist eth1394

blacklist snd_intel8x0m

blacklist snd_aw2

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 #############################



[  325.670301] rndis_host 1-2:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-2, RNDIS device, <MAC address>

[  927.862948] rndis_host 1-2:1.0 usb0: unregister 'rndis_host' usb-0000:00:14.0-2, RNDIS device

[ 2949.069411] rndis_host 1-2:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-2, RNDIS device, <MAC 'usb0' [IF1]>



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