I have an LG UJ6570 (webOS) and an LG SJ4Y soundbar hooked up on ARC.
I recently dropped my cable services and have switched to the Roku Express 4K+ as the TV's built in application suite does not cover all of the offerings I want.
I am experiencing a problem where the Roku appears to be signaling the soundbar by CEC to switch to HDMI input.
Prior to adding the Roku, the soundbar normally had two indicator lamps in the middle that were marked ARC. Now, with the Roku in the mix, it switches to the right most indicator (HDMI) and won't switch automatically to the ARC.
I have been trying to figure out if the "Control Other Devices > 1-touch play" is what is causing it nor not.
I have turned that off for the moment and will see if that makes a difference.
Any other suggestions or experiences would be greatly appreciated.