Can't connect to wifi in KDE Plasma

Hello everyone! This is my first post on the Manjaro forum.

I’m a new user

I used XFCE for around 2 weeks now and I wanted to try the KDE Plasma desktop version of Manjaro.
I wasn’t able to connect to wifi. The system sees the USB stick I’m using to connect to wifi, it listes the avaiable wifis but when I try to connect to one it fails.

I’m using the TP-LINK WN823N wifi adapter and I’m using the RTL8xxxu driver.

Click here to see system information

inxi -Nazy

  Device-1: Intel I211 Gigabit Network vendor: Gigabyte driver: igb v: kernel 
  port: f000 bus ID: 03:00.0 chip ID: 8086:1539 
  Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB 
  driver: rtl8xxxu bus ID: 1-9:3 chip ID: 2357:0109 serial: <filter> 


Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 0e6a:02c0 Megawin Technology Co., Ltd Defender Gaming Keyboard
Bus 003 Device 004: ID 0c76:160c JMTek, LLC. USB Speaker
Bus 003 Device 003: ID 18ec:3399 Arkmicro Technologies Inc. USB2.0 PC CAMERA
Bus 003 Device 002: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 2357:0109 TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU]
Bus 001 Device 004: ID 04e8:6034 Samsung Electronics Co., Ltd G2 Portable hard drive
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

inxi -F

  Host: pcLeo Kernel: 5.9.16-1-MANJARO x86_64 bits: 64 Desktop: KDE Plasma 5.20.4 
  Distro: Manjaro Linux 
  Type: Desktop System: Gigabyte product: B450 AORUS PRO v: N/A 
  serial: <superuser required> 
  Mobo: Gigabyte model: B450 AORUS PRO-CF v: x.x serial: <superuser required> 
  BIOS: American Megatrends v: F60e date: 12/09/2020 
  Info: 6-Core model: AMD Ryzen 5 3600X bits: 64 type: MT MCP L2 cache: 3 MiB 
  Speed: 3591 MHz min/max: 2200/3800 MHz Core speeds (MHz): 1: 3591 2: 2050 3: 2191 
  4: 2192 5: 2053 6: 2196 7: 2194 8: 2196 9: 3588 10: 2048 11: 2048 12: 2195 
  Device-1: AMD RV730 XT [Radeon HD 4670] driver: radeon v: kernel 
  Display: x11 server: X.Org 1.20.10 driver: ati,radeon unloaded: modesetting 
  resolution: 1920x1080~60Hz 
  OpenGL: renderer: AMD RV730 (DRM 2.50.0 / 5.9.16-1-MANJARO LLVM 11.0.0) 
  v: 3.3 Mesa 20.3.1 
  Device-1: AMD RV710/730 HDMI Audio [Radeon HD 4000 series] driver: snd_hda_intel 
  Device-2: AMD Starship/Matisse HD Audio driver: snd_hda_intel 
  Device-3: Arkmicro USB2.0 PC CAMERA type: USB driver: snd-usb-audio,uvcvideo 
  Device-4: JMTek LLC. USB Speaker type: USB driver: hid-generic,snd-usb-audio,usbhid 
  Sound Server: ALSA v: k5.9.16-1-MANJARO 
  Device-1: Intel I211 Gigabit Network driver: igb 
  IF: eno1 state: down mac: b4:2e:99:e8:ab:91 
  Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB driver: rtl8xxxu 
  IF: wlp1s0f0u9 state: down mac: 5e:49:ad:6b:e3:2b 
  Local Storage: total: 1.04 TiB used: 7.87 GiB (0.7%) 
  ID-1: /dev/sda vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB 
  ID-2: /dev/sdb type: USB vendor: Samsung model: G2 Portable size: 596.17 GiB 
  ID-1: / size: 115.13 GiB used: 7.87 GiB (6.8%) fs: ext4 dev: /dev/sda5 
  Alert: No Swap data was found. 
  System Temperatures: cpu: 44.5 C mobo: N/A gpu: radeon temp: 37.0 C 
  Fan Speeds (RPM): N/A 
  Processes: 298 Uptime: 4m Memory: 15.64 GiB used: 979.9 MiB (6.1%) Shell: Bash 
  inxi: 3.2.01

Thanks in advance :slightly_smiling_face:

PS: Sorry for the bad english

Hi @leo1, welcome to the forum.
Please take a look to this post which could solve the problem.
Wifi dongle not working anymore TP-Link TL WN823N RTL8192EU

You can also search the forum with the name of the wifi usb TP-Link WN823 and look for solved problems.

Hope it help, regards.

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