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After a NetworkManager update I can't use the following command if I'm trying to connect to a known network, I get this error
$ nmcli device wifi connect <SSID> password <password>
Error: 802-11-wireless-security.key-mgmt: property is missing.
Now I'm only able to use "nmcli connection up <SSID>" for know networks.
I also noticed that my connection is way more unstable, and the networks becomes unavailable for about 40 seconds every few hours, and sometimes it goes blank indefinetly until I reconnect. I went back to version 1.48.6-1 and it fixed every problem I had with the newer versions. Should I just stay on this version forever or...?
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Have/Had the same problem, and we are not the only ones. I also found
https://www.reddit.com/r/archlinux/comm … n_kind_of/
where the following
I've been having similar issues for months. Turns out the issue was not NetworkManager but rather the wifi backend. I'm assuming you are using wpa_supplicant. Try either downgradeing and/or switching NetworkManager to use iwd as the backend https://wiki.archlinux.org/title/Networ … Fi_backend
was proposed by VALTIELENTINE
. I cant say that it helped me, but it might help you.
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. Deleted any existing (but not working) wifi connection listed in nm-connection-editor.
. Installed iwd but did not enable the service nor configure it.
. Created the conf file :
/etc/NetworkManager/conf.d/wifi_backend.conf
as mentioned in the wiki link above (§7.12).
. Checked 'Enable wi-fi' option in nm-connection-editor and let it create a wifi connection.
. Done.
PS - It helped me… Did it help anyone else?
Last edited by philo (Yesterday 11:12:31)
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. Deleted any existing (but not working) wifi connection listed in nm-connection-editor.
. Installed iwd but did not enable the service nor configure it.
. Created the conf file :
/etc/NetworkManager/conf.d/wifi_backend.conf
as mentioned in the wiki link above (§7.12).
. Checked 'Enable wi-fi' option in nm-connection-editor and let it create a wifi connection.
. Done.PS - It helped me… Did it help anyone else?
What's weird is that downgrading NetworkManager fixed the issue, not wpa_supplicant. It broke after a networkmanager update as well.
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