Regarding the location of (or supposed lack of) an IR receiver on the gen4 box, it is there, bottom right as you are looking at the front of the box. It is sandwiched in the slot between the faceplate and the bottom so the vertical angle from which you can point an IR remote is pretty terrible. I use a Harmony hub which was on a table across the room from my TV and surely blasted the whole wall since it had no trouble controlling the TV, AVR, AppleTV, BD player, and Xfinity gen3 box. Switched to the Gen4 box and it would not play nice (yes I disabled RF mode first). The only way to get the Gen4 box to respond to an IR remote was from the floor, basically 0* vertical angle to the box. Even putting the Harmony hub on the floor wouldn’t work. Suffice to say, they really want you to use only the voice remote, to the detriment of us with more than a TV, sound bar, and cable box in our living rooms. I finally got my Harmony hub to work by putting it on the shelf with my gear and adding an IR mini blaster routed up by the bottom of the TV. Again every component on the shelf was fine with the Harmony hub placement except for the Xfinity box. By pushing the hub out past the edge of the shelf, sliding the Gen4 box back a couple inches (and perching it up on top of 2 other components), AND increasing the “repeat time” on the hub (how many times it blasts the signal when a button is pressed on the Harmony remote), it began to work pretty reliably. Honestly, this should not be this hard. ... View more

The current implementation of ARC, with current generation TVs, only support 2-channel PCM or 5.1 lossless (always Dolby Digital but could also be be DTS), same as Toslink. There certainly *could* be a hardware or cable issue with your Toslink connection, but the audio signal would be the same over Toslink or ARC via HDMI. ... View more

And there is no HDMI splitter that will do what you want to do, the devices (like monoprice.com sells) negotiate to the least-capable HDMI device. Until you update your AVR, the closest you can get is to send full-bandwidth HDMI to the TV and split off 5.1 Dolby Digital (or 2-channel PCM) via Toslink to your AVR. ... View more

Xfinity has been re-encoding every channel to 720P for quite a while. With my last X1 box, I left it’s output at 720P to prevent another resizing/resampling step from occurring before it reached the TV. Now that I have the gen 4 I have left it at 2160P/60 and the HD channels are passable quality. In the short time I’ve had this box I’ve wondered if they have since started letting 1080i signals through unmolested. (This was in response to the recent post about the video processor up scaling to 4K better than the X1. Sorry, haven’t figured out how to quote a post) ... View more

I did the refresh and then searched for “4K.” Then I found the 4K content listed. Thank you for the help! I returned to the Olympic portal and it is still not listed there (which is where the Xfinity 4K Olympics pages told you to look for it). So I hope the Xfinity folks can learn a bit from this experience. It was pretty painful for me but I’m now watching the opening ceremony with the family. ... View more

2160P/60 (Best). And I used the high-speed hdmi cable from my UHD player, so I know the cable is good for HDR. ... View more

I use a Logitech Harmony remote. I have also tried searching for “4K” but that turns up nothing. Seriously, I keep hearing that the 4K Olympic content exists, but can find nothing but the 3-minute-long Welcome video. ... View more

My X1 Gen4 box arrived yesterday and I got it hooked up. I tested 4K display via the Netflix app on X1 and confirmed that it looked OK. I then went searching for 4K Olympics content. I found “Welcome to Pyeongchang” and... nothing else. Started an online chat with an Xfinity rep about the issue, wasted a full hour before he escalated to another agent. That agent understood a little better what I was looking for “Where is the Olympic 4K content?” but another hour with that rep got me nowhere. I still cannot find any replays of anything in 4K. Is there a Comcast employee who can tell me why I have no content? ... View more