Add rfkill details (fixes #5471) (#5472)

source/_docs/installation/hassbian.markdown

@@ -12,12 +12,8 @@ redirect_from: /getting-started/hassbian/
 
 Hassbian is our customized operating system for the Raspberry Pi Zero, 2,3 and 3B+. It is one of the easiest ways of installing Home Assistant.
 
- - [Install Hassbian][install]
- - [Customize your installation][customize]
- - [Pi specific integrations][integrations]
- - [Learn how to perform common tasks][common]
+ - [Install Hassbian](/docs/hassbian/installation/)
+ - [Customize your installation](/docs/hassbian/customization/)
+ - [Pi specific integrations](/docs/hassbian/common-tasks/)
+ - [Learn how to perform common tasks](/docs/hassbian/integrations/)
 
-[install]: /docs/hassbian/installation/
-[customize]: /docs/hassbian/customization/
-[common]: /docs/hassbian/common-tasks/
-[integrations]: /docs/hassbian/integrations/

source/_docs/installation/hassbian/installation.markdown

@@ -10,7 +10,7 @@ footer: true
 redirect_from: /docs/hassbian/installation/
 ---
 
-One of the easiest ways to install Home Assistant on your Raspberry Pi Zero, 2 ,3 and 3B+ is by using Hassbian: a Raspberry Pi image with Home Assistant built-in. The image will install the latest version of Home Assistant on initial boot (~10 minutes).
+One of the easiest ways to install Home Assistant on your Raspberry Pi Zero, 2, 3 and 3B+ is by using Hassbian: a Raspberry Pi image with Home Assistant built-in. The image will install the latest version of Home Assistant on initial boot (~10 minutes).
 
  1. [Download the Hassbian image][image-download]
  2. Use [Etcher][etcher] to flash the image to your SD card
@@ -52,8 +52,20 @@ network={
     psk="YOUR_PASSWORD"
 }
 ```
+
 You may need to adjust the country code depending upon where you are. A list of codes can be found [here](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2#Officially_assigned_code_elements).
 
+If you are running in trouble with your Wifi connection (for [further details](https://www.raspberrypi.org/forums/viewtopic.php?t=207882)), check the output of the following command:
+
+```bash
+$ sudo rfkill list
+0: phy0: Wireless LAN
+Soft blocked: yes
+Hard blocked: no
+```
+
+To unblock it, exceute `$ sudo rfkill unblock wifi`.
+
 ### {% linkable_title Technical Details %}
 
  - Home Assistant is installed in a virtual Python environment at `/srv/homeassistant/`