Seems that LG TV can't read the info from the cable signal the same way as your other TVs. Never heard of Suddenlink, but they are not in my area at all, no idea what is needed to show the channel info if not using their own cable box. You can always check with them to see if you can use a programmable generic remote with their setup.
We are lucky and Suddenlink does not require a cable box except for older TV's like some cable companies do I have found out. Our system has changed names a lot over the years. When I was using my old TV and their little box and remote then you could click on info and it would show the channels and what was playing on them.
This new LG when I click on the guide does show all the channels but over to the right all of them just say no info. The smaller TV's just show all the channels and that is all. This new LG with it showing to the right no info on them still makes me wonder if for some reason it is not receiving that info that was like on the old box and remote? It has all the space and the correct format for it to show but will it and if not why is it even showing in the first place? I might have to ask LG and see what they can tell me?
For now all I can do is cut the TV guide out of our newspaper or go on line and see what is playing and when. That is a bummer for sure.
I was wanting a Sony and Best Buy local did not have one and it would have cost me $500 and this LG seem to have all I wanted but this one feature? A good friend of mine has the Sony that is a few years old and his shows the channels and what is playing on them and he is just connected to an antenna and he sent me a screen shot of it showing on his. He told me just to order the Sony and when it come in take the LG back and I have until Jan to return it. I did save $150 buying the LG and Best Buy said it would be the 5th or 6th before I received the Sony and I didn't have a TV to watch in my living room because my old one crapped out on me but it had been a good one.
Thank you for trying to help and just maybe someone else may have an answer or tell me this LG will not show what I would like for it to show and I am back to a TV guide of some sort!!!!!