Hi all, I've ran into an issue that I don't seem to be able to find the solution for. Already tried Google and searching this subreddit, but nothing worked, in fact I cannot find anyone with the same problem as mine.
I have my Apple TV (4K 128GB) connected to my LG C1, which has Edifier R2850DB speakers connected with optical cable. I can control the volume of the speakers using the TV remote with universal control enabled, but for some reason this does not work with ATV remote, even though all the correct icons appear on screen when I click VOL+, VOL- and MUTE buttons. For some reason MUTE function works once after restarting Apple TV, but then also stops. I can control TV volume using ATV remote when I change Sound Out option to TV speakers, but not with Optical Out.
CEC link between the devices is enabled, I can control Apple TV with the TV remote without problems. I have tried restarting ATV remote, learning new device, as well as all available connection options. The on screen icons when using volume control buttons are the same when using the TV remote (they are also the same with the speakers disconnected from universal control, in which case only an icon similar to MUTE appears, this applies to both remotes), the only difference is that the volume does not change when I use ATV remote.
Anyone have any ideas how to get this working? I could be using LG remote for everything, but I would prefer ATV remote to be the only remote that I need to use, and volume control is the only thing left that it cannot do.