2 days ago the wifi in my house stopped working only for Manjaro, I have 1 Android, 1 my wife's iPhone and a Windows notebook, they are all connecting normally in WiFi (so I discarded errors in router).
Doing a journalctl -f -u NetworkManager I am seeing a:
dhcp (wlp2s0) internal error code 12 after dispatch
My wifi works in unprotected WiFi networks though (without password)
Does anyone know / already experienced this issue?