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