Wifi disconnects and asks for authentication often

While I am connected to wifi, it often disconnects and asks for authentication, even when wifi is remmembered when I connected to it.
Wifi router is fine, even when that happens, my phone is connected to same network and on phone it is still stable.

Like, even when disconnecting, it is still detecting wifi, but it’s like it forgets it’s credentials.

Can this be something about DHCP, and linux get confused ?

As this happens every 20-30 minutes of constant use.
I guess DHCP then tries again…

But I tried static address, it’s still same behaviour.

This is my laptop info

How to keep internet connection connected without interruption - #4 by vgaetera

will check if it have effect.
I wait for now, if it happen again