this post was submitted on 15 May 2026
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How’s HDMI-CEC support in Linux? I remember that being a sticking point last time I considered building an HTPC
Doesn’t work. Not a Linux issue. No graphics card or motherboard maker connects the hardware correctly to support CEC on PCs. It’s an industry-wide practice.
There is the pulse eight injector which together with software can inject CEC with a USB connection with the caveat it can’t turn your computer on and it’s a hacky and imperfect solution for tinkerers rather than production ready equipment. Also it’s only HDMI 2.0 not 2.1.
Pulled directly from KDE Plasma’s Bigscreen website.
https://plasma-bigscreen.org/
KDE Connect has literally only every once worked for me, via WiFi only.
I don't understand why they haven't officially added the Bluetooth support into it by now.
I searched for what HDMI-CEC but it’s not very clear to me. Does it mean that, say, if I have an HTPC, and if I run Kodi, I can control it with a regular TV remote? Should this thing be on a TV too? Would appreciate someone with the supported devices to comment how it works and how you use it.
It means that multiple devices which are connected to the same TV can all control each other.
For example, say you have a streaming device (e.g. Amazon Fire Stick) and an audio receiver both hooked up to the same TV on different HDMI ports. With CEC, you could use the volume buttons on the streaming device’s remote to control the volume on the audio receiver. You could also use the power button on the TV remote to turn all three devices on/off at the same time.
I use LibreElec which is a Linux distro of sorts. It has CEC that works for me