Journalctl: wlan0: CTRL-EVENT-SIGNAL-CHANGE

[mr.psyc]

Hello,

I already know journalctl from other distributions, which is very helpful for error analysis.
journalctl -f writes me messages from WLAN0 every second
like this:

journalctl -f
Feb 28 10:23:31 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-73 noise=9999 txrate=175600
Feb 28 10:23:31 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-73 noise=9999 txrate=175600
Feb 28 10:23:32 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-73 noise=9999 txrate=175600
Feb 28 10:23:32 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=175600
Feb 28 10:23:33 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=175600
Feb 28 10:23:33 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=6000
Feb 28 10:23:34 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-71 noise=9999 txrate=6000
Feb 28 10:23:34 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=175600
Feb 28 10:23:35 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=175600
Feb 28 10:23:35 baumgard wpa_supplicant[982]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-70 noise=9999 txrate=6000

is this normal? should i ignore it? However, this output is almost worthless if the log is flooded with these messages.

My wifi works without any issues.

thanks for some infos

best regards
mr.pSYc

[dbarronoss]

Recently (last cpl months) I and one other posted regarding this. We both switched from wpa_supplicant to iwd (see arch wiki) and things are better (or completely fixed) for each of us.
I would be interested in knowing what wireless hardware you have. Mine is
Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
driver: r8169
Another alternative is to run the LTS kernel (which since that’s a moving target may no longer fix it).

[mr.psyc]

Hello dbarronoss,

sorry, i forgot all the informations about my setup:

Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
Kernel: 6.13.4-arch1-1.4-g14 (from asus-linux.org)
how to find the driver?

mr.pSYc

One question: i read the arch article about iwd. Thanks for that. I don’t realy understand, if i change to iwd, could i use the normal network manager gui in KDE because i often change wlan, lan and vpn with this.

[mr.psyc]

Thanks to chatgpt and perplexity, so i change to iwd and my journalctl is much more cleaner.

Install iwd

sudo pacman -S iwd

create a config file for KDE network manager

sudo vi /etc/NetworkManager/conf.d/iwd.conf

addd this lines

[device]
wifi.backend=iwd

deactivate the wpa_supplicant

sudo systemctl stop wpa_supplicant.service
sudo systemctl disable wpa_supplicant.service

activate iwd

sudo systemctl enable iwd.service
sudo systemctl start iwd.service

restart network manager

sudo systemctl restart NetworkManager

after that i must reconnect to my wifi with password

now i have a clean journal

Thank you
mr.pSYc