USB permission lines (home-assistant#1543)

Wilco89 · Landrash · commit c0ff26e163a8 · 2016-12-06T09:07:34.000+01:00
Add permission to read out USB devices (DSMR, z-wave etc)
diff --git a/source/getting-started/installation-raspberry-pi-image.markdown b/source/getting-started/installation-raspberry-pi-image.markdown
@@ -73,7 +73,7 @@ Log in as the `pi` account and execute the following commands:
 ```bash
 $ sudo systemctl stop home-assistant@homeassistant.service 
 $ sudo su -s /bin/bash homeassistant
-$  source /srv/homeassistant/bin/activate
+$ source /srv/homeassistant/bin/activate
 $ pip3 install --upgrade homeassistant
 $ exit
 $ sudo systemctl start home-assistant@homeassistant.service
@@ -160,6 +160,14 @@ $ sudo apt-get upgrade
 
 Press `Y` to confirm that you would like to continue.
 
+### {% linkable_title USB device permissions}
+When using some USB devices users have to give dialout permission to the user `homeassistant` and restart.
+
+```shell
+$ sudo usermod -a -G dialout homeassistant
+$ sudo reboot
+```
+
 ### {% linkable_title Troubleshooting %}
 
 If you run into any issues, please see [the troubleshooting page](/getting-started/troubleshooting/). It contains solutions to many of the more commonly encountered issues.
