Hi All, I have very strange situation with my not very new Dell Latitude E6400 notebook. It has Intel Wifi Link 5100 module. At some point this notebook with Hera (built on Ubuntu 18.04.0.4 LTS, Linux 5.4.0-74-generic, GDK 3.22.30) stopped seeing my own wifi router meanwhile i can see my neighbors networks and my mobile hot spot. Sometimes it could find my network (i cannot understand dependency) but then cannot accept correct password. It configured with WPA personal security settings. Any clues how it can be fixed?