deekue/steamos-libcec-extension

libcec systemd system extension for SteamOS. With supported hardware adds CEC control of attached display.

steamos-libcec-extension

Add HDMI CEC support to SteamOS, requires supported hardware.

cec-install.sh sets up systemd-sysext then builds and installs an extension that includes libcec and systemd unit files.

The included systemd unit files will:

• power on, resume: power on the TV and set SteamDeck as active source
• power off, sleep: set the TV to standby
• TODO: dock,undock

Installation

1. Install supported hardware (tested with PulseEight USB-CEC Adapter )
2. Switch to Desktop Mode
3. open a terminal (Ctrl+Alt+t)
4. curl -fsSLO https://github.com/deekue/steamos-libcec-extension/raw/main/cec-install.sh
5. chmod +x cec-install.sh
6. ./cec-install.sh install

Usage

Usage: cec-install.sh <install|update|uninstall>

install   install extension and activate
update    update extension and activate
uninstall deactive extension and remove

References

• https://blogs.igalia.com/berto/2022/09/13/adding-software-to-the-steam-deck-with-systemd-sysext/
• https://www.reddit.com/r/SteamDeck/comments/10nksyr/adding_hdmicec_to_a_dock_using_a_pulseeight_usb/j6a9k3z/?context=3
• https://wiki.archlinux.org/title/Power_management#Combined_suspend/resume_service_file
• https://github.com/Pulse-Eight/libcec/tree/master/systemd