So I’ve got a living room computer running Cachy OS/Plasma Bigscreen that has replaced my Xbox. (I’m calling it the Xbox None)

It’s an old Dell Optiplex I picked up for cheap - runs indie titles pretty well and I can stream from my main PC.

Anyway, that’s not why I’m posting…

I can’t seem to find a way to get it to turn the TV on and off when it goes to sleep and wake up. Can anyone help?

Edit: thanks for the answers! I don’t want to buy an adapter so I guess I’ll live with having to use the remote. 🤷‍♂️ I am going to see if the TV settings can help me out though.

  • MrSoup@lemmy.zipEnglish
    9·
    7 days ago

    It is rare that a computer have HDMI-CEC natively.
    Try the command “cec-ctl” (which is part of v4l-utils) or take a look at the Arch Wiki.

    Even if your hardware doesn’t support it, you can still use displayport with an adapter or even a usb+hdmi adapter.

    • Mongostein@lemmy.caOPEnglish
      1·
      7 days ago

      Ohhhh, I do have a display port and a display port to HDMI adapter already. Would this work or would the TV need display port too?

      • MrSoup@lemmy.zipEnglish
        4·
        7 days ago

        The TV will be connected with HDMI and computer will have its DisplayPort converted to HDMI by a supported adapter. But:

        most adapters do not support the CEC Tunneling feature, and of those that do many did not actually connect the CEC pin. Unfortunately, this means that while a CEC device is created, it is actually all alone in the world and will never be able to see other CEC devices.

        DisplayPort to HDMI Adapters with working CEC

        HDMI-CEC Tunneling over DisplayPort | Arch Wiki

        TL;DR

        Connect your computer’s DisplayPort with DP-HDMI adapter to TV’s HDMI. To test if the adapter tunnels CEC, run in a terminal:

        cec-ctl --playback && cec-ctl -S

        Which should show at least two devices.