HomeAssistant AIO HDMI CEC error (clean install)

CaptainComedy · September 19, 2017, 9:41pm

Hi,
I have a clean install of HASS AIO for my pi 3, however, trying to do:

#HDMI CEC
hdmi_cec:
  devices:
    TV: 0.0.0.0
    #PC: 1.0.0.0 (Not using CEC compatible HDMI cable.)
    Raspberry Pi: 2.0.0.0
    Chromecast: 3.0.0.0

Gives the following error:

2017-09-19 21:10:36 ERROR (MainThread) [homeassistant.setup] Error during setup of component hdmi_cec
Traceback (most recent call last):
File “/srv/homeassistant/homeassistant_venv/lib/python3.5/site-packages/homeassistant/setup.py”, line 194, in _async_setup_component
component.setup, hass, processed_config)
File “/usr/lib/python3.5/asyncio/futures.py”, line 380, in iter
yield self # This tells Task to wait for completion.
File “/usr/lib/python3.5/asyncio/tasks.py”, line 304, in _wakeup
future.result()
File “/usr/lib/python3.5/asyncio/futures.py”, line 293, in result
raise self._exception
File “/usr/lib/python3.5/concurrent/futures/thread.py”, line 55, in run
result = self.fn(*self.args, **self.kwargs)
File “/srv/homeassistant/homeassistant_venv/lib/python3.5/site-packages/homeassistant/components/hdmi_cec.py”, line 184, in setup
adapter = CecAdapter(name=display_name[:12], activate_source=False)
File “/srv/homeassistant/homeassistant_venv/lib/python3.5/site-packages/pycec/cec.py”, line 20, in init
import cec
ImportError: No module named ‘cec’

Really not sure where to go from here - I have checked that the CEC references are correct (yes they exist), however it just won’t work… I have tried simplifying with:

hdmi_cec:
  platform: media_player

But same result… I don’t think it’s the config file, more that the config file calls on something not correct…
I have tested HDMI_CEC from commandline with cec-client and it works, so definitely not the libcec package itself… I am thinking that it is the symlink? the only reference from this forum I can get is from February where the version was 0.38 - However I would have thought this would be fixed by now?

Additionally the instructions need to be updated for HDMI-CEC - Home Assistant as this references python3.4, but we are now python3.5, also the symlink is now out of date?

anysuggestions?

CaptainComedy · September 20, 2017, 8:13am

Gonna try another clean install and check the install log for CEC… I just read another thread where the symlink failed in install - however I didn’t check the whole install log as it completed with success message.

CaptainComedy · September 20, 2017, 7:14pm

yep, just checked my install log and I can confirm the last log is it failing on cec:

[localhost] sudo: make install
[localhost] out: [ 83%] Built target cec
[localhost] out: [ 88%] Built target cec-client
[localhost] out: [ 92%] Built target cecc-client
[localhost] out: [100%] Built target _cec
[localhost] out: e[36mInstall the project...e[0m
[localhost] out: -- Install configuration: ""
[localhost] out: -- Installing: /usr/local/bin/./cec-client-4.0.2
[localhost] out: -- Installing: /usr/local/bin/./cec-client
[localhost] out: -- Installing: /usr/local/bin/./cecc-client-4.0.2
[localhost] out: -- Installing: /usr/local/bin/./cecc-client
[localhost] out: -- Installing: /usr/local/bin/./pyCecClient
[localhost] out: -- Installing: /usr/local/lib/python3.5/dist-packages/_cec.so
[localhost] out: -- Set runtime path of "/usr/local/lib/python3.5/dist-packages/_cec.so" to ""
[localhost] out: -- Installing: /usr/local/lib/python3.5/dist-packages/cec/__init__.py
[localhost] out: -- Installing: /usr/local/lib/pkgconfig/libcec.pc
[localhost] out: -- Installing: /usr/local/include/libcec/cec.h
[localhost] out: -- Installing: /usr/local/include/libcec/cecc.h
[localhost] out: -- Installing: /usr/local/include/libcec/cecloader.h
[localhost] out: -- Installing: /usr/local/include/libcec/cectypes.h
[localhost] out: -- Installing: /usr/local/include/libcec/version.h
[localhost] out: -- Installing: /usr/local/lib/libcec.so.4.0.2
[localhost] out: -- Installing: /usr/local/lib/libcec.so.4
[localhost] out: -- Installing: /usr/local/lib/libcec.so
[localhost] out: -- Set runtime path of "/usr/local/lib/libcec.so.4.0.2" to ""
[localhost] out: 

[localhost] sudo: ldconfig
[localhost] sudo: ln -s /usr/local/lib/python3.4/dist-packages/cec /srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages
[localhost] out: ln: failed to create symbolic link '/srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages': No such file or directory
[localhost] out: 

Warning: sudo() received nonzero return code 1 while executing 'ln -s /usr/local/lib/python3.4/dist-packages/cec /srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages'!

Below is a similar thread that goes back as far as March!:
https://community.home-assistant.io/t/all-in-one-on-a-rapsberry-pi-3-fails/

CaptainComedy · September 20, 2017, 8:09pm

Further research:

A few tickets are on the forums:
HomeAssistant AIO HDMI CEC error (clean install) (mine)
All in one on a Rapsberry PI 3 fails (This goes back to March)
https://github.com/home-assistant/fabric-home-assistant/issues/47 (This was closed because it was successful on jessie lite but a poster later said they also get this issue.
https://github.com/home-assistant/fabric-home-assistant/issues/55 (This finds the cause and lists the next steps to take, however libcec itself is still broken for Raspberry pi at time of writting)

Libcec research:
https://github.com/Pulse-Eight/libcec/issues/362#issuecomment-317258888 the issue tracker of the libcec fault
https://github.com/Pulse-Eight/libcec/commit/5b4faecdeb1d6f8b27822fc50f4b49f6f5c66b95#diff-b81d8c50f4b84adb2a4bb9138dbbf2d3 (The file that is commiting the break in libcec)

So for those with this issue - it is not HomeAssistant at fault, but libcec. I don’t know if following that issue and updating will resolve the issue, I’ll probably just start from scratch to be sure

CaptainComedy · September 21, 2017, 8:03am

there is a temporary work around here: error installing libcec using hassbian-config · Issue #38 · home-assistant/hassbian-scripts · GitHub

If anyone is still need it…
I Mannaged to install libCEC by removing lines 191-199 in the file:
~/libcec/src/libcec/cmake/CheckPlatformSupport.cmake

This is my new installation process:
sudo apt-get update
sudo apt-get install cmake libudev-dev libxrandr-dev python-dev swig
cd
git clone GitHub - Pulse-Eight/platform: Platform support library used by libCEC and binary add-ons for Kodi
mkdir platform/build
cd platform/build
cmake …
make
sudo make install
cd
git clone GitHub - Pulse-Eight/libcec: USB CEC Adapter communication Library http://libcec.pulse-eight.com/

sed -i ‘191,199d’ ~/libcec/src/libcec/cmake/CheckPlatformSupport.cmake
•If you want to manually edit the file see below.
mkdir libcec/build
cd libcec/build
cmake -DRPI_INCLUDE_DIR=/opt/vc/include -DRPI_LIB_DIR=/opt/vc/lib …
make -j4
sudo make install
sudo ldconfig

Test it
echo scan | cec-client -s -d 1

To manually edit CheckPlatformSupport.cmake
sudo nano ~/libcec/src/libcec/cmake/CheckPlatformSupport.cmake
Remove those lines:
SET(PYTHON_LIB_INSTALL_PATH “/cec” CACHE STRING “python lib path”)
if (${CMAKE_MAJOR_VERSION} GREATER 2 AND ${CMAKE_MAJOR_VERSION} GREATER_EQUAL 7)
SET(PYTHON_LIB_INSTALL_PATH “” CACHE STRING “python lib path” FORCE)
else()
if (${CMAKE_MAJOR_VERSION} GREATER_EQUAL 3)
SET(PYTHON_LIB_INSTALL_PATH “” CACHE STRING “python lib path” FORCE)
endif()
endif()