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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) : CONFIG_CEC_CORE=y CONFIG_CEC_NOTIFIER=y CONFIG_CEC_PIN=y CONFIG_MEDIA_CEC_SUPPORT=y CONFIG_USB_PULSE8_CEC=m CONFIG_USB_RAINSHADOW_CEC=m 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).

@J Black Kat if your T95 is based on a H6 you can try to install the Inovato OS (based on Armbian for the T95 H6) : https://forum.inovato.com/post/doing-a-factory-restore-12449421?highlight=factory restore&pid=1333459821 . Have a look to their technical forum. And @MBB can possibly provide you additional information.

Thanks a lot for the infos @jernej, I'll the 4 points.

Hi @SteeMan, thanks. Actually I know TV boxes are not supported, even less the Allwinner based ones. But I know that many of the Armbian community play with those boxes. So my question was rather a message in bottle in the sea hoping someone else tried the same with more success that I currently have with cec 😉

I would like to control the TV via my box (T95 mini - powered by an H6) runing on Armbian. I installed both cec-utils (for cec-client) and v4l-utils (for cec-ctl) but neither seem to work. Did anyone manage to use the CEC protocol on an H6 box ?