Hello. I’m new to Linux and what a surprise to find that my Wifi dongle is not detected. I use the ACI200M Wifi Dongle.
After some research on the internet I could not find anything about my problem. I also unplug - replug my wifi dongle without success.
Thanks to those who will help me 
PS: I am used to command lines and so on because I am an advanced user on Windows but on Linux please consider me as a baby 
Please read and post inxi output:
Is it good?
System:
Kernel: 5.13.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.13-x86_64
root=UUID=1af250a8-aec8-4605-98b9-440b796b0ca4 rw quiet apparmor=1
security=apparmor udev.log_priority=3
Desktop: KDE Plasma 5.22.5 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Desktop Mobo: ASUSTeK model: PRIME B360-PLUS v: Rev 1.xx
serial: <filter> UEFI: American Megatrends v: 0802 date: 06/20/2018
Battery:
ID-1: hidpp_battery_0 charge: N/A condition: N/A volts: 3.9 min: N/A
model: Logitech G Pro Wireless Gaming Mouse type: N/A serial: <filter>
status: Discharging
Memory:
RAM: total: 15.55 GiB used: 2.72 GiB (17.5%)
RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: 6-Core model: Intel Core i5-8400 bits: 64 type: MCP arch: Kaby Lake
note: check family: 6 model-id: 9E (158) stepping: A (10) microcode: EA
cache: L2: 9 MiB bogomips: 33613
Speed: 800 MHz min/max: 800/2800 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
4: 800 5: 800 6: 800
Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art
avx avx2 bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid
cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est
f16c flexpriority flush_l1d fma fpu fsgsbase fxsr ht hwp hwp_act_window
hwp_epp hwp_notify ibpb ibrs intel_pt invpcid invpcid_single lahf_lm lm mca
mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat pbe
pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts rdrand
rdseed rdtscp rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1 sse4_2
ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust tsc_deadline_timer vme
vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
Type: mds mitigation: Clear CPU buffers; SMT disabled
Type: meltdown mitigation: PTI
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: disabled, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: NVIDIA GP104 [GeForce GTX 1080] vendor: Micro-Star MSI
driver: nvidia v: 470.63.01 alternate: nouveau,nvidia_drm bus-ID: 01:00.0
chip-ID: 10de:1b80 class-ID: 0300
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver:
loaded: nvidia display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 92 s-size: 530x301mm (20.9x11.9")
s-diag: 610mm (24")
Monitor-1: DVI-D-0 res: 1920x1080 hz: 60 dpi: 93
size: 527x296mm (20.7x11.7") diag: 604mm (23.8")
OpenGL: renderer: NVIDIA GeForce GTX 1080/PCIe/SSE2
v: 4.6.0 NVIDIA 470.63.01 direct render: Yes
Audio:
Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel
v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl bus-ID: 00:1f.3
chip-ID: 8086:a348 class-ID: 0403
Device-2: NVIDIA GP104 High Definition Audio vendor: Micro-Star MSI
driver: snd_hda_intel v: kernel bus-ID: 01:00.1 chip-ID: 10de:10f0
class-ID: 0403
Device-3: Oculus VR Rift S type: USB
driver: cdc_acm,hid-generic,snd-usb-audio,usbhid bus-ID: 1-4.2:4
chip-ID: 2833:0051 class-ID: 0300 serial: <filter>
Device-4: Blue Microphones Yeti Stereo Microphone type: USB
driver: hid-generic,snd-usb-audio,usbhid bus-ID: 1-8:8 chip-ID: b58e:9e84
class-ID: 0300 serial: <filter>
Device-5: Logitech G935 Gaming Headset type: USB
driver: hid-generic,snd-usb-audio,usbhid bus-ID: 1-9:10 chip-ID: 046d:0a87
class-ID: 0300
Sound Server-1: ALSA v: k5.13.19-2-MANJARO running: yes
Sound Server-2: JACK v: 1.9.19 running: no
Sound Server-3: PulseAudio v: 15.0 running: yes
Sound Server-4: PipeWire v: 0.3.38 running: yes
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: ASUSTeK PRIME B450M-A driver: r8169 v: kernel port: 3000
bus-ID: 07:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
WAN IP: <filter>
Bluetooth:
Message: No bluetooth data found.
Logical:
Message: No logical block device data found.
RAID:
Hardware-1: Intel SATA Controller [RAID mode] driver: ahci v: 3.0 port: 5000
bus-ID: 00:17.0 chip-ID: 8086.2822 rev: 10 class-ID: 0104
Drives:
Local Storage: total: 2.04 TiB used: 9.38 GiB (0.4%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: LDLC model: N/A size: 223.57 GiB
block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s type: SSD
serial: <filter> rev: 3A0 scheme: GPT
ID-2: /dev/sdb maj-min: 8:16 vendor: Seagate model: ST2000DM006-2DM164
size: 1.82 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
type: HDD rpm: 7200 serial: <filter> rev: CC26 scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 931.36 GiB size: 915.67 GiB (98.32%) used: 9.38 GiB (1.0%)
fs: ext4 dev: /dev/sdb2 maj-min: 8:18 label: N/A
uuid: 1af250a8-aec8-4605-98b9-440b796b0ca4
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 576 KiB (0.2%) fs: vfat dev: /dev/sdb1 maj-min: 8:17 label: NO_LABEL
uuid: CE76-5A2A
Swap:
Alert: No swap data was found.
Unmounted:
ID-1: /dev/sda1 maj-min: 8:1 size: 499 MiB fs: ntfs
label: R\xc3\xa9cup\xc3\xa9ration uuid: B85A1AC45A1A7EF6
ID-2: /dev/sda2 maj-min: 8:2 size: 100 MiB fs: vfat label: N/A
uuid: C01B-3220
ID-3: /dev/sda3 maj-min: 8:3 size: 16 MiB fs: <superuser required>
label: N/A uuid: N/A
ID-4: /dev/sda4 maj-min: 8:4 size: 222.97 GiB fs: ntfs label: N/A
uuid: F65A21CB5A218A07
ID-5: /dev/sdb3 maj-min: 8:19 size: 931.36 GiB fs: ntfs label: Linux Bis
uuid: E6D21129D210FF8B
USB:
Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Hub-2: 1-4:2 info: Oculus VR Rift S USB Hub ports: 2 rev: 2.1
speed: 480 Mb/s chip-ID: 2833:2052 class-ID: 0900
Device-1: 1-4.2:4 info: Oculus VR Rift S
type: Abstract (modem),CDC-Data,Audio,HID
driver: cdc_acm,hid-generic,snd-usb-audio,usbhid interfaces: 9 rev: 2.0
speed: 12 Mb/s power: 500mA chip-ID: 2833:0051 class-ID: 0300
serial: <filter>
Device-2: 1-5:3 info: Logitech G935 Gaming Headset Battery Charger type: HID
driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s
power: 500mA chip-ID: 046d:0a88 class-ID: 0300
Hub-3: 1-6:5 info: Genesys Logic Hub ports: 4 rev: 2.1 speed: 480 Mb/s
power: 100mA chip-ID: 05e3:0610 class-ID: 0900
Device-1: 1-6.2:7 info: Elgato Systems Stream Deck type: HID
driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 480 Mb/s
power: 400mA chip-ID: 0fd9:0060 class-ID: 0300 serial: <filter>
Device-2: 1-6.4:14 info: Realtek RTL88x2bu [AC1200 Techkey]
type: <vendor specific> driver: N/A interfaces: 1 rev: 2.1 speed: 480 Mb/s
power: 500mA chip-ID: 0bda:b812 class-ID: 0000 serial: <filter>
Device-3: 1-7:6 info: Logitech G910 Orion Spectrum Mechanical Keyboard
type: Keyboard,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
speed: 12 Mb/s power: 500mA chip-ID: 046d:c335 class-ID: 0300
serial: <filter>
Device-4: 1-8:8 info: Blue Microphones Yeti Stereo Microphone
type: Audio,HID driver: hid-generic,snd-usb-audio,usbhid interfaces: 4
rev: 1.1 speed: 12 Mb/s power: 100mA chip-ID: b58e:9e84 class-ID: 0300
serial: <filter>
Device-5: 1-9:10 info: Logitech G935 Gaming Headset type: Audio,HID
driver: hid-generic,snd-usb-audio,usbhid interfaces: 4 rev: 1.1
speed: 12 Mb/s power: 100mA chip-ID: 046d:0a87 class-ID: 0300
Device-6: 1-10:11 info: Logitech USB Receiver type: Keyboard,Mouse,HID
driver: logitech-djreceiver,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
power: 98mA chip-ID: 046d:c539 class-ID: 0300
Hub-4: 2-0:1 info: Full speed (or root) Hub ports: 6 rev: 3.1 speed: 10 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Hub-5: 2-6:2 info: Genesys Logic USB3.1 Hub ports: 4 rev: 3.1 speed: 5 Gb/s
chip-ID: 05e3:0626 class-ID: 0900
Sensors:
System Temperatures: cpu: 27.8 C mobo: N/A gpu: nvidia temp: 58 C
Fan Speeds (RPM): N/A gpu: nvidia fan: 0%
Info:
Processes: 226 Uptime: 44m wakeups: 2 Init: systemd v: 249 tool: systemctl
Compilers: gcc: N/A Packages: 1197 pacman: 1193 lib: 329 flatpak: 0 snap: 4
Shell: Zsh v: 5.8 default: Bash v: 5.1.8 running-in: konsole inxi: 3.3.06```Realtek RTL88x2bu
Make sure that your system is fully updated. Kernel 5.13 is End of Life (EOL). So either update to 5.14 or 5.15 or at very least, install a LTS (Long Term Support Kernel) e.g. 5.10.
Install the appropriate kernel headers and DKMS. It looks like the driver needed is
rtl88x2bu-dkms-git 5.13.1.r149.7f96b19-1.
After you install the appropriate kernel headers and dkms ( it’s a dependency and will install if you have not already), in terminal:
pamac build rtl88x2bu-dkms-git
More information in readme here:
Realtek RTL88x2BU WiFi USB Driver for Linux. Contribute to RinCat/RTL88x2BU-Linux-Driver development by creating an account on GitHub.
AUR page:
https://aur.archlinux.org/packages/rtl88x2bu-dkms-git
Thank you I will try this
Also please see:
Hello @Mattyoz, I guess it is this device what you are talking about:
As you see behind ‘driver’ there is ‘N/A’ written, so your system dont know/have the driver for it.
But there are drivers for this wifi-chip in the AUR. But at first I would suggest to switch to an other Kernel while 5.13 is EOL (End Of Life → no further fixes).
For updating the Kernel you can use the program ‘mhwd-kernel’. Open a terminal and type:
sudo mhwd-kernel -i linux515
for installing kernel 5.15 … (change linux515 to linux514 if you want to install kernel 5.14)
After a reboot your system should use the new installed kernel.
The most things @jrichard326 just tell faster then me. 
Keep in mind as @jrichard326 said that you need to install kernel headers for the used kernel to install dkms-moduls.
For more help feel free to ask again.
I have difficulty understanding how Manjaro proposes its Distribution with a Kernel at the end of its life 
I have no idea what the kernel is for but downloading Manjaro and already having to touch the core of the distribution I love it 
Linux is very far from becoming a viable alternative to Windows knowing that 70-80% of computer users don’t even know how to use a computer outside a text editor. I’m abusing a little but the majority don’t understand anything about computers 
I update the Manjaro packets and come back to you
Yes, some days befor there was a discussion on the forum about this “issue”. 
For short, the kernel is linux. Everything else is build around to use the kernel and/or make it easier to use. Every 2-3 months a new kernel was released. Some kernels are LTS kernels which get Long Term Support.
For more infomation you con visit kernel . org:
… I agree, but I have already migrate familymembers from windows to manjaro which are part of the “majority” you said and it wored for them and for me (less support calls 
)
@kisun I updated the Kernel but when I use > inxi --admin --verbosity=7 --filter --width My Konsole tells me I’m still on the Kernel: 5.13 
I have to go back to Windows. I’ll be back on Linux around 11pm
Did you reboot?
And what is the output of this command:
mhwd-kernel -liAh indeed the reboot has solved the problem I am well in 5.15 But how to keep the Kernel up to date if a new update is released every 3-4 months?
I missed your last post. You can check the Update Announcements and Manjaro Notifier Settings may be of some help as well. See screenshot.
It is a good idea to have at least two kernels installed and have one of those be a LTS kernel. There is “learning curve” with Linux, but if you think back,the same can be said of Windows. Take a look here:
https://wiki.manjaro.org/index.php/Manjaro_Kernels
In the kernels most drivers are buildin and sometimes drivers leave the kernel. So sometimes for old hardware the newest kernel dont work or for newest hardware there where no drivers in the older kernels.
As long as you kernel is not EOL and your system works without problems then there is no need to switch kernel.
And if 5.15 works on your system without problems you can stay a while, cause 5.15 will get next LTS. 
You didn’t mention if you are dual booting with Windows. If you are, be sure that Windows is completely shutdown before booting Manjaro. Windows Fastboot, Hybrid Sleep and Hibernation should be disabled.
it’s done yes
The kernel has been updated but I have errors
pamac build rtl88x2bu-dkms-git ✔
Preparing...
Cloning rtl88x2bu-dkms-git build files...
Generating rtl88x2bu-dkms-git information...
Checking rtl88x2bu-dkms-git dependencies...
Warning: rtl88x2bu-dkms-git-5.13.1.r149.7f96b19-1 is up to date -- reinstalling
Resolving dependencies...
Checking inter-conflicts...
To build (1):
rtl88x2bu-dkms-git 5.13.1.r149.7f96b19-1 AUR
Edit build files : [e]
Apply transaction ? [e/y/N] y
Building rtl88x2bu-dkms-git...
==> Making package: rtl88x2bu-dkms-git 5.13.1.r149.7f96b19-1 (jeu. 09 déc. 2021 23:25:40)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
-> Updating RTL88x2BU-Linux-Driver git repo...
Fetching origin
==> Validating source files with sha256sums...
RTL88x2BU-Linux-Driver ... Skipped
==> Removing existing $srcdir/ directory...
==> Extracting sources...
-> Creating working copy of RTL88x2BU-Linux-Driver git repo...
Cloning into 'RTL88x2BU-Linux-Driver'...
done.
==> Starting pkgver()...
==> Entering fakeroot environment...
==> Starting package()...
==> Tidying install...
-> Removing libtool files...
-> Purging unwanted files...
-> Removing static library files...
-> Stripping unneeded symbols from binaries and libraries...
-> Compressing man and info pages...
==> Checking for packaging issues...
==> Creating package "rtl88x2bu-dkms-git"...
-> Generating .PKGINFO file...
-> Generating .BUILDINFO file...
-> Generating .MTREE file...
-> Compressing package...
==> Leaving fakeroot environment.
==> Finished making: rtl88x2bu-dkms-git 5.13.1.r149.7f96b19-1 (jeu. 09 déc. 2021 23:25:50)
==> Cleaning up...
Vérification du trousseau... [1/1]
Vérification de l’intégrité des paquets... [1/1]
Chargement des fichiers des paquets... [1/1]
Analyse des conflits entre fichiers... [1/1]
Vérification de l’espace disque disponible... [1/1]
Exécution des crochets de pré-transaction...
Creating Timeshift snapshot before upgrade... [1/2]
==> skipping timeshift-autosnap due skipRsyncAutosnap in /etc/timeshift-autosnap.conf set to TRUE.
Remove upgraded DKMS modules [2/2]
Réinstallation de rtl88x2bu-dkms-git (5.13.1.r149.7f96b19-1)... [1/1]
Exécution des crochets de post-transaction...
Arming ConditionNeedsUpdate... [1/3]
Install DKMS modules [2/3]
==> ERROR: Missing dev kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing lib kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing run kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing opt kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing boot kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing sbin kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing srv kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing mnt kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing tmp kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing desktopfs-pkgs.txt kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing lost+found kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing sys kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing usr kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing etc kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing proc kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing root kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing rootfs-pkgs.txt kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing lib64 kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing bin kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing home kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
==> ERROR: Missing var kernel headers for module rtl88x2bu/5.13.1.r149.7f96b19.
Refreshing PackageKit... [3/3]
Transaction successfully finished.
mhwd-kernel -li ✔ 27s
Currently running: 5.15.2-2-MANJARO (linux515)
The following kernels are installed in your system:
* linux513
* linux515
You forgot to install kernel-headers befor installing the driver.
Run this in a terminal:
pamac install linux515-headers
… an then run the commands @jrichard326 said again.
Oh dear Sorry to be so bad under Linux O_o