My wifi connection automatically activates and deactivates every few seconds .I updated the system a few minutes before this started happening. The router itself is going fine. inxi -Na shews the driver installed and working. Any help would be greatly appreciated.
I doubt there’s an easy answer, but there certainly isn’t without more information about your device.
Having gone down essentially the same path, I found that disabling wpa_supplicant and using iwd fixed it for me. However, given what you didn’t provide (information), I have no idea if you’re even running wpa_supplicant under networkmananger.
As mentioned by @dbarronoss without any real info anything people are going to comment will be suggestions. The more information you provide the more likely someone will be able to help you.
Ok. The router is TP-LINK ML6400
I am using KDE network manager with wpa_supplicant
systemctl status wpa_supplicant showed it was disabled
I enabled it and rebooted. Still not working.
The device is Realtek RTL8821CE
driver is rtw88_8821ce
I update the firmware for the router a few day ago.
wpa_supplicant is ran on demand and not constant by network manager. So you shouldn’t enable it. And, as I said, it may be part of the problem. I don’t recall the device precisely, but mine with that issue was also a Realtek. That motehrboard proved somewhat flaky and I moved off it, and glad am I for it..it’s nice to be working out of box with wpa now.
What I saw in the system journal was constant beaconing, which as I said was alleviated by replacing wpa_supplicant (see Arch Wiki).
Install the rtl8821ce-dkms-git package from the AUR.
Reboot, and if your wifi is still not working check which wifi driver module is loaded.
If the rtw88_8821cemodule is still loaded, then you will need to blacklist the rtw88_8821cemodule (and reboot).
I think it is not directly related to that kernel vulnerability. More likely the update changed something with your WiFi driver or firmware, which happens sometimes. The fact that it keeps connecting/disconnecting every few seconds usually points to a driver issue or a mismatch after the update. If it was working fine before, you might want to check if a newer kernel or driver update is available, or even try booting into the previous kernel to see if it becomes stable again.