Hi @deltasig68 yes. Actually the issue was due to some kernel flags not set when the OS image was generated. I managed to have it working by recompiling the OS (following the Quadra / Inovato procedure by @MBB: https://forum.inovato.com/post/building-armbian-from-source-12449428?pid=1334457271) and once the few build issues fixed, I recompiled changing the following kernel flags (taken from a libreelec forum) :
Then you can use the cec protocol with cec-ctl (apt-get install v4l-utils). I haven't completed my tests but it seems to work fine. Please notice that the above is valid on a T95 / Quadra box (H6 based). And double check that your HDMI cable support the protocol (not all do).
