Thanks for the update, but it will be moot for me come this weekend as I am going to just return the device (before my January 31st deadline). I even moved my Roku Ultra LT so it was powered from different wall outlet with a different surge suppressor, and I still see the problem. This last time I was just casting YouTube from my phone to the Roku. It is EXTREMELY sad and disappointing that this new Roku Ultra LT model performs so much worse than my 6+ year old Roku Premiere 4620 model! With Roku putting out such sub-par products now, I am seriously considering migrating away from Roku to other devices.
Just to circle back on this to complete my story, I did indeed return my new Roku Ultra LT. I have been using my 6 year old Roku Premiere 4620 model in its place, and (as expected) it is clearly working better. It is truly baffling just how bad Roku's almost-top-of-the-line Ultra LT product is (and it is equally bad that Roku doesn't seem to really care)! It has definitely soured me on Roku.
I am having HDCP errors now on my Roku Premiere making it unusable. Bad software/firmware after it worked for a couple of years. My solution was to buy a Firestick. Roku used to be innovative but now they seem lost in space.
What model is that Premiere? And/or is it a bigger square-ish device or a smaller rectangle-ish like the Express units? What software version is it on? Is it connected to 4K TV or just a regular HD one when you get the HDCP errors? Thanks...
I have one of those newer Premiere units too (it's a 3920). I have been using it on a 4K Hisense TV for a couple years or so. So far, I don't recall any HDCP issues. If you are trying to run the Roku's output into a computer then I could see HDCP kicking in because it probably thinks you could be trying to record the content. The issue I was having with my Ultra LT was completely different as it was just connected directly to a 4K Vizio TV. I would get momentary HDCP errors several times a night when trying to watch television. Using all the same connections, I didn't have this problem with my 4620 Premiere unit either before or after I tried the Ultra LT. Hence why I returned the new Ultra LT because it performed worse than my 6 year old Premiere.
Your speculation seems far fetched and I suspect is based on not knowing the topology off the HP unit where the HDMI input functions when the computer's CPU is shut down and powered off. As I said my fire stick works fine to replace the Roku.