Wifi scan works but connection fails. Can someone help?

Support Network
1

Hi everyone, I have a strange issue with my Dektop PC Wi-Fi connection. I have a standard manjaro installation on it (Gnome). I have following Wi-Fi stick:

TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU].

And I can select an Access Point in the gnome settings. It tries to connect but after some time the connection fails.

How can I find out what the problem could it be?

2

provide output from:
inxi -xn
mhwd-kernel -li

3 
➜  ~ inxi -xn

Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Micro-Star MSI driver: r8169 v: kernel port: f000 bus-ID: 22:00.0
  IF: enp34s0 state: down mac: 2c:f0:5d:5d:37:de
  Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB
    driver: rtl8xxxu bus-ID: 1-1:2
  IF: wlp3s0f0u1 state: down mac: 12:f4:99:9b:12:e2
  IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
    mac: 00:1a:7d:da:71:13
➜  ~

➜  ~ mhwd-kernel -li



Currently running: 5.15.48-1-MANJARO (linux515)
The following kernels are installed in your system:
   * linux414
   * linux515
➜  ~
4

so first remove the 414 kernel, its eol:
sudo pacman -R linux414
install headers for 515:
sudo pacman -S linux515-headers
install dkms drivers:
pamac build 8192eu-dkms-git
reboot and test wifi

5

Ok, I did this, but still the same, Wi-Fi does not connect. I also tried to connect to an open Wi-Fi hotspot from my Android-Phone.

6

provide output again:
inxi -xn

7 
➜  ~ inxi -xn



Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Micro-Star MSI driver: r8169 v: kernel port: f000 bus-ID: 22:00.0
  IF: enp34s0 state: down mac: 2c:f0:5d:5d:37:de
  Device-2: TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU] type: USB
    driver: rtl8xxxu bus-ID: 1-1:2
  IF: wlp3s0f0u1 state: down mac: e8:48:b8:8f:4c:d3
  IF-ID-1: bnep0 state: unknown speed: N/A duplex: N/A
    mac: 00:1a:7d:da:71:13
➜  ~
8

create this file:
sudo nano /etc/modprobe.d/blacklist.conf
and inside it put this:
blacklist rtl8xxxu
press ctrl+x to save it
reboot and test wifi

1 Like
9

hey awesome it works now. How can I uninstall the rtl8xxxu ?

10

you cant its part of the kernel… its blacklisted, so its not being loaded anyway… and if you change kernels, for example, you install the 5.18, then you have to install with it also headers 5.18, so dont forget that

11

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