I am also having this problem. I have a 60 inch Samsung Smart TV and a Samsung Home Theater System connected by HDMI. Before I upgraded from a regular Hopper to a Hopper with Sling, the TV would detect and control the home theater. However, once I plug the Hopper with Sling into an HDMI connection on the TV or the home theater, the TV no longer detects or controls the home theater. In addition, becuase the TV doesn't see the home theater, it disables the HDMI ARC (audio return channel) to the home theater and I can no longer get sound from the smart TV when using its built in HBO Go application. This is not good at all. Once I disconnect the Hopper or replace it with my other Hopper (without Sling), everything works as it did before I upgraded. As a workaround, any time I want to use HBO Go, I am disconnecing the Hopper's HDMI cable. DIRT if you are listening, I too would like a fix.
Thanks
Thanks