A follow up to my earlier post about the leds-valve DKMS module, now it is usable within the latest experimental build of OpenRGB itself as long as that leds-valve module is loaded.
Support for the #Valve #SteamMachine under #Linux has been merged into #OpenRGB. This relies on the leds-valve kernel module that is included in the SteamOS kernel. A DKMS package is available to install this kernel module on #Arch and #Debian distros:
https://gitlab.com/CalcProgrammer1/leds-valve-dkms
or AUR leds-valve-dkms-git



The built-in controls are already pretty good.