So the problem was a setting of the wifi channel, wifi works now.

The usual problems can be the reason, like power problems. What is your power supply? Hidden SSID? Other devices can access Wifi at the same location as the Pi is? SSID is "JuniWalk-WiFi", not hidden, accessible by notebook and phone without issues. This is what I have bought: Raspberry Pi Universa...

WiFi did not work with clean Raspbian Lite either so I think (hope) this is not the problem.

Hello, I have bough Raspberry Pi 2 with the official WiFi dongle . When I run this command: # iwlist wlan0 scan I don't see my wifi listed. Has anyone had such a problem? Here is some information: WiFi is WPA2 Personal with AES encryption OS is latest Raspbian Lite I have added debian/sid repository...