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Add logo, links, and tweak the format a little

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Fabian Affolter 2016-07-30 13:06:15 +02:00
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source/_components/hdmi_cec.markdown
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@ -8,7 +8,7 @@ comments: false
sharing: true sharing: true
footer: true footer: true
ha_category: Automation ha_category: Automation
featured: false logo: hdmi.png
ha_release: 0.23 ha_release: 0.23
ha_iot_class: "Local Push" ha_iot_class: "Local Push"
--- ---
@ -23,23 +23,33 @@ The computer running Home Assistant must support CEC, and of course be connected
### {% linkable_title libcec %} ### {% linkable_title libcec %}
[libcec](https://github.com/Pulse-Eight/libcec) must be installed for this component to work. Follow the installation instructions for your environment, provided at the link. `libcec` installs Python 3 bindings, by default as a system Python module. If you are running Home Assistant in a Python virtual environment, make sure it can access the system module, by either symlinking it or using the `--system-site-packages` flag. [libcec](https://github.com/Pulse-Eight/libcec) must be installed for this component to work. Follow the installation instructions for your environment, provided at the link. `libcec` installs Python 3 bindings by default as a system Python module. If you are running Home Assistant in a [Python virtual environment](/getting-started/installation-virtualenv/), make sure it can access the system module, by either symlinking it or using the `--system-site-packages` flag.
#### {% linkable_title Symlinking into virtual environment %} #### {% linkable_title Symlinking into virtual environment %}
`ln -s /usr/local/lib/python3.4/dist-packages/cec <your venv>/lib/python3.4/site-packages` Create a symlink to the `cec` installation.
e.g. the default virtual environment for the Raspberry Pi AIO would be as follows. ```bash
$ ln -s /usr/local/lib/python3.4/dist-packages/cec /path/to/your/venv/lib/python3.4/site-packages
```
`ln -s /usr/local/lib/python3.4/dist-packages/cec /srv/hass/hass_venv/lib/python3.4/site-packages` For the default virtual environment of a [Raspberry Pi AIO](/getting-started/installation-raspberry-pi-all-in-one/) the command would be as follows.
```bash
$ ln -s /usr/local/lib/python3.4/dist-packages/cec /srv/hass/hass_venv/lib/python3.4/site-packages
```
If after symlinking and adding `hdmi_cec:` to your configuration you are getting the following error in your logs, If after symlinking and adding `hdmi_cec:` to your configuration you are getting the following error in your logs,
`* failed to open vchiq instance` ```bash
* failed to open vchiq instance
```
you will also need to add the user account HASS runs under, to the `video` group. To add the HASS user account to the `video` group run the following command. you will also need to add the user account Home Asssistant runs under, to the `video` group. To add the Home Assisitant's user account to the `video` group run the following command.
`usermod -a -G video <hass_user_account>` ```bash
$ usermod -a -G video <hass_user_account>
```
## {% linkable_title Configuration Example %} ## {% linkable_title Configuration Example %}

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