Random short wifi failures since update on WPA3

Hi everyone,

I’m a pretty big noob but have been using Endeavouros with lots of joy for the last year. Almost everything functioned fine (even gaming with Nvidia) but since an update around the second week of November my wifi has been giving me grief. It randomly doesn’t work for a short period as evidenced by the following pings:

64 bytes from ams17s09-in-f14.1e100.net (216.58.214.14): icmp_seq=205 ttl=117 time=155 ms
64 bytes from ams17s09-in-f14.1e100.net (216.58.214.14): icmp_seq=206 ttl=117 time=15.5 ms
From coen-endeavouros (10.1.1.60) icmp_seq=208 Destination Host Unreachable
ping: sendmsg: No route to host
From coen-endeavouros (10.1.1.60) icmp_seq=209 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=210 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=212 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=213 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=214 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=215 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=216 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=217 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=218 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=219 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=221 Destination Host Unreachable
From coen-endeavouros (10.1.1.60) icmp_seq=222 Destination Host Unreachable
64 bytes from ams17s09-in-f14.1e100.net (216.58.214.14): icmp_seq=223 ttl=117 time=95.1 ms
64 bytes from ams17s09-in-f14.1e100.net (216.58.214.14): icmp_seq=224 ttl=117 time=13.4 ms
64 bytes from ams17s09-in-f14.1e100.net (216.58.214.14): icmp_seq=225 ttl=117 time=12.9 ms

This seems to happen only on the WPA3 network as connecting to the IOT wifi which uses WPA2 does not cause the same issue. Can anyone help me troubleshoot? I don’t want to downgrade all my packages to 11th of November again (which I did for a bit and resolved the issue)

lspci -vnn | grep -A9 "Network controller"
00:14.3 Network controller [0280]: Intel Corporation Raptor Lake PCH CNVi WiFi [8086:51f1] (rev 01)
	Subsystem: Intel Corporation Device [8086:0094]
	Flags: bus master, fast devsel, latency 0, IRQ 16
	Memory at 6203144000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

00:15.0 Serial bus controller [0c80]: Intel Corporation Alder Lake PCH Serial IO I2C Controller #0 [8086:51e8] (rev 01)
	Subsystem: Lenovo Device [17aa:3841]

Getting the following errors:

dmesg | grep iwlwifi
[  384.726269] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  384.727602] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  387.583764] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  389.612513] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  391.639160] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  419.309965] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  421.338031] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  423.369618] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  425.018266] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  426.083071] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  426.083996] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  426.084379] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  428.946477] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  430.973963] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  432.999157] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  467.584062] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  469.613253] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  471.650400] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  473.034032] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  474.101141] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  474.102049] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  474.102692] iwlwifi 0000:00:14.3: Unhandled alg: 0x707
[  477.413243] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  479.464570] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...
[  516.325810] iwlwifi 0000:00:14.3: Not associated and the session protection is over already...

Thank you all for your help

What Wifi-AP is on the other side?
I know these messages from my FritzBox Cable 6660.

[  473.034032] iwlwifi 0000:00:14.3: Unhandled alg: 0x707

But I don’t see any negative effects in my setup.

Thanks for your reply. The AP is a Unifi U7 Pro.

Meanwhile I’ve tried a few things I’ve found online and the following seems to resolve the issue:

In "/etc/modprobe.d/iwlwifi.conf" add:

options iwlmvm power_scheme=1

I’ve not had any more issues in the last few hours of use and no dropped pings but I guess that isn’t much of a test yet. I’m happy to leave that setting but wonder whether it will have a noticeable effect on the battery life of the laptop