Weak signal wifi with Fedora kernel 5.16.5

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1

Hello, I have a small problem with respect of the kernel 5.16.5. when i upgrading Fedora after install and rebooting the pc (sudo dnf update), the kernel change from 5.14.10 to 5.16.5. Right now I’m using Fedora with 5.14.10 but I want to know what is the cause and if it has a solution.

I using a TP-Link Wifi Adapter TL-WN722N:

inxi -Nn 

Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    driver: r8169
  IF: enp5s0 state: down mac: 40:b0:76:61:8a:7d
  Device-2: TP-Link TL-WN722N v2/v3 [Realtek RTL8188EUS] type: USB
    driver: r8188eu
  IF: wlp10s0f3u1 state: up mac: 50:3e:aa:df:f1:47

i’m new in this so, if you need something just let me know.

2

Go back to Kernel Linux fedora 5.14.10-300.fc35.x86_64 #1 SMP Thu Oct 7 20:48:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Mine is working good with this Kernel

Carlos Garcia

3

You can monitor the strength of the signal and see current channel and signal strenght with iw wlp10s0f3u1 info. Most likely, it’s simply landed on a noisy channel. You can use iw dev wlp10s0f3u1 set channel ## (replace ## with channel number) to a less busy channel. There are phone apps that can help you identify this if your router isn’t the best at negotiating it.

4

Please check I think is a know issue. Google RTL8188EUS slow on kernel 5.15.

Some reports on opensuse TW. And Manjaro.

Gracias

Carlos

5

A little test same PC, same hardware.

Kernel 5.14.10-300 Working Good
Kernel 5.16.10-200 Not Working
Kernel 5.16.11-200 Not Working

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6

I have the same problem with RTL8188EUS. WIFI drops completely “Limited Connectivity”

5.15.13 works fine
5.15.18 works fine
5.16.10 fails
5.16.11 fails

Has anybody found a solution?

1 Like
7

I was in 5.15.28, working fine
Yesterday updated and not work fine the wifi, the signal is good, but the connection is a trash…
I back to 5.15.18 now

1 Like