WIFI stops working

[larbac]

Hello

For about a month, this issue started to happen: my wifi stops working and even kind of crashes the system. Kind of, because browser can still open and close, I can do a CTRL+Alt+Del and send a shutdown command. But if I don't restart, I cannot enable or disable the wifi for instance.

It's very random.... My Wifi is a Comfast CF-953AX, and it has been working for more than 1 year already....
Any ideas?
Thanks

[Schwarzer Kater]

[…]
It's very random.... My Wifi is a Comfast CF-953AX, and it has been working for more than 1 year already....
Any ideas?
Thanks

So when did you upgrade to Kubuntu 23.10 then?
Any correlation with this or a specific kernel/firmware update?

[larbac]

No, 23.10 was already working sometime already.
Maybe after some firmware update, but not sure... I can't a correlation ....

[kc1di]

What we need to know is the chipset they are using.
One problem may be the power save function of Network manager you can turn that off and see if it makes a difference.
You can do that by the following:

Please check your current power save state:
cat /etc/NetworkManager/conf.d/*.conf


Unless it has been previously changed, it should read:
[connection]
wifi.powersave = 3


In this context, 3 indicates that the Network Manager will use power saving. Let's change it to 2, indicating that the system will not use power saving. From the terminal:
sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*
sudo systemctl restart NetworkManager.service

Good Luck.