NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

mthu042 · 2025-01-25 13:40:23

Mb Late but for me this help

nmcli connection delete DIR-842 
nmcli device wifi connect <SSID> password <PASSWORD>

hjvt.dev · 2025-04-11 19:05:59

I've been experiencing this with either of the backends for the past few months, and lately the aforementioned "solution" of deleting the connection stopped working. I now occasionally get this same error even on the first connection attempt, after purging saved connections and even rebooting for a good measure.

edit:
Just had to reboot the laptop to connect to either of the two wifi networks in my house

Just in case, I'm using gnome-keyring.

Last edited by hjvt.dev (2025-04-11 22:30:12)

seth · 2025-04-11 20:50:48

seth wrote:

I suspect this is related to how NM stores the network key and whether something like kwallet or gnome-keyring is involved.

What DE do you use (or password/secret manager if there's a standalone one)?

hjvt.dev · 2025-04-15 12:39:54

hjvt.dev wrote:

I've been experiencing this with either of the backends for the past few months, and lately the aforementioned "solution" of deleting the connection stopped working. I now occasionally get this same error even on the first connection attempt, after purging saved connections and even rebooting for a good measure.
edit:
Just had to reboot the laptop to connect to either of the two wifi networks in my house.

So, uh, the only reliable way to connect to wifi for me right now is to

1. nmcli connection delete $ssid
2. systemctl restart iwd
3. nmcli dewice wifi connect $ssid

Either of the first two steps on it's own is not helping.

seth · 2025-04-15 13:53:14

You're not supposed to start iwd when using NM itfp.
Please post the output of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

hjvt.dev · 2025-05-01 00:48:55

seth wrote:

You're not supposed to start iwd when using NM itfp.
Please post the output of
find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

I don't start it, nor have it enabled. I presume NM itself starts it, since killing iwd and not restarting it renders NM `device wifi` commands inoperable.

seth · 2025-05-01 06:44:59

Are you https://wiki.archlinux.org/title/Networ … Fi_backend ? (That'S not default)
Please post your complete system journal for the boot:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

after connecting tho your wifi.

Arch Linux

#26 2025-01-25 13:40:23

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#27 2025-04-11 19:05:59

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#28 2025-04-11 20:50:48

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#29 2025-04-15 12:39:54

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#30 2025-04-15 13:53:14

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#31 2025-05-01 00:48:55

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

#32 2025-05-01 06:44:59

Re: NetworkManager 802-11-wireless-security.key-mgmt: property is missing.

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