Roku "1-touch play" (HDMI input switching) not working with LG C2 TV

[haptrail]

I have an LG C2 Web OS TV and a Roku Ultra Model 4670RW.  The Roku comes with an option called "1-touch play" which allows you to switch the TV from between devices connected to other HDMI 2.1 inputs.  I have a Roku in one input, a DVD player in another, and a Directv Streaming box in another.  With this same setup on a Vizio V435-H11 TV, I am able to press the home/play buttons on the Roku remote and no matter which input I'm watching, it will switch to the Roku.  Same with pressing remote buttons on the DVD player and Directv remotes - the TV will switch to that device.  But with the LG C2 TV, none of the switching takes place when pressing the same buttons on the remotes for the other devices.

 

I have enabled the "1-touch play" on the Roku remote (settings/system/control other devices/1-touch play), and I have enabled the IR Setup (settings/Remotes & Devices/Remotes/Enhanced Voice Remote/Setup Remote for TV Control/IR setup).  I cannot enable the CEC setup on the Roku Remote, but that doesn't affect the 1-touch play switching function on the Vizio TV so I don't think that plays into the limitation on the LG C2.  I have also enabled the CEC (Simplink) function on the LG C2 (General/Devices/HDMI Settings/Simplink (HDMI-CEC)).

 

I've read some solutions online and have done a system restart on the Roku as well as disconnecting all devices from power, disconnecting all the HDMI cables, waiting 5 minutes, and reconnecting all.  I am using all new 2.1 HDMI compatible cables.  Any body else having this problem with using a Roku Ultra and an LG C2 TV and found a solution?

 

Thanks!