About rlee131

@tjf120 wrote: how do I send a PM in this forum?   I have the same handshake issue, Samsung UHD TV.     Yes, if I turn off UHD I don't have to reboot the box everyday, but then I have to go in and change it every time I want to watch something in 4 K.   The box needs a firmware fix. Hi Click on the persons forum name Upper left  corner and send the message from there.   Also, I to have a 2017 Q7 75" Samsung and been dealing with the issue since November 2018.  Several on the forum indicated that it really does not make any difference if the  port has the UHD turned off or not because  that the picture quality will always be 4k if all the settings are correct on the X1 and the TV    After months of experimenting with watching 4K on YouTube, Amazon and Netflix with UHD off and On, I came to the conclusion that I could not see any difference in picture quality with it on or off so I have been leaving it off. 4K quality was always great Try it out and see what "your eyes" tell you.   However, Comcast SHOULD fix the issue. Period. Anyway Good Luck ... View more

@WindsurfMaui wrote: My new Comcast tier (signature) comes with Netflix included. But it is the lower level Netflix and so I plan to upgrade to the UHD Netflix and see if the picture quality is worth the extra $3 a month. So I wanted to see if turning on the HDR option in my Samsung would cause the handshake issue to return. The handshake issue is so frustrating that I would forgo the Netflix 4K. So far there has not been a handshake issue. But once I get the upgraded Netflix I will try different options to see if it is really worth the 3 monthly surcharge.   Interesting side note RCN cable has just wired my street and offered me the same level of service as Comcast for about $100 less a month than I am currently paying. That is a big savings, but RCN is a small company that is only in a few cities and I am not sure of the quality of their service.  I certainly don't want a service that  has constant problems expecially with my internet connection. Plus they don't offer mobile phone service so I would have to start paying for mobile phone servioce instead of using my XfinityMobile phone. So I am going to wait a few months and see what feedback I get from any neighbors who sign up.  I did upgrade my Netflix to get the 4k movies.  With my Samsung TV UHD turned off on the Port going to the X1Box When I Watch the Netflix 4k movie it is great.  It makes no difference if the UHD on the TV to that port is on or off  Picture is 4k great either way, so this has proven to me that like some have said that the UHD does NOT have to be on to the port.  The few comcast 4k movies that are out there are also great with the UHD off.  As is the 4K content on you tube.  I access Netflix by telling the X1 to go to Netflix   Also when I look in the settings on the X1 box I have it set to best picture quality and it always shows 4K UHD at both the X1 box and at the TV whether the TV UHD port is on or off.   Anyway, I am done dealing with the "handshake" issue, becasue I discoverd based on my viewing and what another said on this forum the UHD can be off and the  picture will always deliver 4k UHD from the box as long as the TV and box are set up correctly.  Good luck ... View more

@radnortx1 wrote: According to Samsung, the UDH setting for an a HDMI port is meant for gaming: https://www.samsung.com/us/support/answer/ANS00079575/   We have had  no problem for months now with this setting off and the cabl box power saver on.  Norpt sure why you all keep screwing around with that setting if the problem comes back.  You don't need it to be on.  You are RIGHT  after months of dealing with this have done what you suggested.  The only reason my family has been turning it on and off is because we THOUGHT we were seeing a better picture qulity with it turned on.  HOWEVER,  after thourghly looking at the 4k picture quality with the UHD turned OFF  we came to the realization that there is NO actural difference.   Our 4K picture quality through, Comcast, YouTube, and Netflix are excellent.   No difference with UHD to that port on or Off.  Thanks for your post  ... View more

@jjgcsb wrote: I have been having a similar issue for many months. After looking at this thread and one titled “XG1V4 requires reboot everyday”, I decided to change my XG1V4 update setting time because there might be a problem with the XG1V4 box when it tries to update itself and reconnect at night when my TV is asleep. I changed my XG1V4 “xfinity/Settings/Preferences/General/Daily Update Time” to “12:00-2:00a” so all updates would occur after I went to bed and before my TV went into sleep mode. It has been over two weeks now and I have not had any more problems. You might want to try this work around and see if it helps your situation. Hi Thanks for the  tip.  I have since November changed the the update time to a variety of different times as was suggested by someone several months ago.   However, I am not clear about one part of your suggestion.  That is change the update time so it up dates before the TV goes to sleep mode.   My system is set up so when I turn the system off at night when going to bed the TV, sound, and X1 box (after awhile) all turn off.  My TV Sansumg 2017 Q7 does not have a setting that I have found that does anything other than turn the TV off (in a mode that it goes on instantly when turned on)  I have tried changing the update time to like 8am-12pm and just leaving the TV on during those hours and it did not make any difference.   Still need to rebood every 3/4 days when the UHD is left on.     ... View more

@Cbutterw430 wrote: I also have a Denon receiver and the same issue. Ever find a solution? Only turning offf  the UHD to the HDMI port the x1 box is connected too. When this is done handshake issue goes away   Then turning it back on after tv and system starts.  Had issues since Nov 2018.  Comcast totally useless in fixing issue even the Comcast people on this forum like Comcast Ken and Rafael. Who contacted me several times then disappeared   aA Comcast Advanced support person (Mark) call me. He was going to contact the Comcast engineers  then call me back.  This was over 5 weeks ago. No Call yet.  Says a lot about Comcast support. POOR CUSTOMER SERVICE NO  interest in fixing a long going nation wide issue   ... View more

@chrisinfla wrote: I think I may be a new victim with this issue.  Started losing video and sound for a 5-10 seconds a week ago, replaced all the HDMI cables with new high speed.  Not fixed.  Setup is XG1V4 to an old Marantz receiver and then to Panny F8500 (not 4K).   Thought OK, guess the Marantz HDMI ports are going, wanted to upgrade anyway and picked up a new Denon 2500 A/V.  Now I am losing video every 15mins or so for a few seconds.  Always re-connects but makes tv unwatchable.  Strangely seems much worse when using Netflix or Amazon from the XG box. Do these sound like the same handshake issues everyone is reporting?  Seems the one difference is it always reconnect by itself.   Sounds much different than the HANDSHAKE issue I have been dealing with since November 2018   Also sounds much different than the Handshake issues I have been reading about in this forum  ... View more

@Rozr1 wrote: any resolution or info regarding this issue from comcast? this is just getting worse and worse for me. Ridiculous  Nothing.  Not too optimistic. I’ve been dealing with since November.  Great lip service from Comcast but no resolution.  Been waiting for a return call from a Senior Advanced repair person, Mark, who assured me he would call after he discussed with engineers  that was one month ago ... View more

WOW. Sure have have tried EVERYTHING as can be seen by my posts with you and members since November 2018 . Been through this with you and Comcast Rafael who you handed me off to then was  contacted by Advanced who was checking with the engineers and going to call me back. Been three weeks and  still no return call ... View more

The firmware I have 100.1.0 in June did not fix the issue for me. I have no Eco settings turned on ... View more

@Timbo3 wrote: I too am having a problem with my cable box performing the morning handshake.  I have a Samsung UN55MU8000.  Cable box XGTV4 Suppose to be the latest version 4k. capable.  Please Comcast fix the problem!   Does anyone have suggestions?  Timbo Hi I have Samsung 2017 Q7 TV.   Been on the forum since Jan and had the issue since Nov 2018.  I have many posts and tried every possible configuration  Been in contact with countless number of Comcast people   Most recently an advanced repair Tech we contacted me through the forum.  He was going to get in contact with the engineers and get back to me.  It’s been three weeks and guess what? NO CALL. ALSO NO SURPRISE TO ME.   Comcast does not seem interested in fixing so don’t waste your time    I did fin one thing from a person on this forum that does work for my system. That is in the TV settings  Turn off the UHD setting to the HDMI port that connects to the X1 before turning tv off  when it’s set there I NEVER have the handshake issue   But when the UHD is turned on I have the problem every 2/3 days   I have been told on this forum by some that the UHD does not have to be on because the X 1 box does not need it to supply a 4K picture.  However I do notice a “slight “ difference in picture quality when it’s turned off. So I just turn it on while watching and off before turning system off   It’s a “work around” that works for me.  Don’t waste your time like I have with Comcast. MAYBE someday they’ll send out a firmware that will fix it.  I actually hand Hundreads of hours  dealing with the issue and Comcast Techs/ Reps.  Good luck let me know if turning off the UHD works for you  ... View more

Just wondering why you never responded to my post to you several weeks ago regarding the topic of this forum, “Handshake “. Any here was the post to you Incase it got lost Comcast Andrew: I agree the discussions regarding the "handshake" issue have gotten well off the topic but I have a question for you Comcast Andrew. I have been subscribed to the Handshake issue forum since November.  I have read countless discussions regarding the issue and responded to several. I have yet to read anthing from a Comcast person indicating that comcast is going to fix the issue. In fact in my area (San Francisco Bay Area)  the technicians that have visited my home are not aware of the problem and  have no soultions other than reset the system, change the box, and change the cables and switch ports.  All of which do not fix the issue.   In fact one technician took some readings and told be there was a problem with my electrical service and that I should notify them.   I did (PG&E in my area) two people came out and checked all my plugs, the meter to my house, connections at the weather head and on the pole as well as the transformer along my electrical feed line.  They said there was absoutly no issues with my electrical service that it is perfect.  They investigated this for over 4 hours. Additionally, when I call comcast  all they suggest is a reset and then send a technician to my home.   One person on this forum suggested I just turn off the UHD on the TV to the HDMI port connected to the the X1 box.  That does work for me but not for others.  Comcast has never made that suggestion.  Why????? Please tell me when a Comcast represenative will take the lead on this nationwide issue and provide some guidance with regards to FIXING the HANDSHAKE issue??? Monitoring the forum is great when things get off track BUT with this issue ALL of us need a resolution from Comcast.   Again, WHEN WILL WE HEAR FROM COMCAST WITH A RESOLUTION? rlee131     ... View more

@CCAndrew wrote: @WindsurfMaui To continue the discussion about your individual DVR recordings issue go back to your original thread. This thread is drifting too far and will be closed if it continues https://forums.xfinity.com/t5/X1/2-DVR-s-how-to-control-where-programs-are-recorded/m-p/3199628#M174049 Comcast Andrew: I agree the discussions regarding the "handshake" issue have gotten well off the topic but I have a question for you Comcast Andrew. I have been subscribed to the Handshake issue forum since November.  I have read countless discussions regarding the issue and responded to several. I have yet to read anthing from a Comcast person indicating that comcast is going to fix the issue. In fact in my area (San Francisco Bay Area)  the technicians that have visited my home are not aware of the problem and  have no soultions other than reset the system, change the box, and change the cables and switch ports.  All of which do not fix the issue.   In fact one technician took some readings and told be there was a problem with my electrical service and that I should notify them.   I did (PG&E in my area) two people came out and checked all my plugs, the meter to my house, connections at the weather head and on the pole as well as the transformer along my electrical feed line.  They said there was absoutly no issues with my electrical service that it is perfect.  They investigated this for over 4 hours. Additionally, when I call comcast  all they suggest is a reset and then send a technician to my home.   One person on this forum suggested I just turn off the UHD on the TV to the HDMI port connected to the the X1 box.  That does work for me but not for others.  Comcast has never made that suggestion.  Why????? Please tell me when a Comcast represenative will take the lead on this nationwide issue and provide some guidance with regards to FIXING the HANDSHAKE issue??? Monitoring the forum is great when things get off track BUT with this issue ALL of us need a resolution from Comcast.   Again, WHEN WILL WE HEAR FROM COMCAST WITH A RESOLUTION? rlee131 ... View more

@radnortx1 wrote: You don’t need to have UHD turned on. 4K works fine. Samsung default is off. Why keep screwing around? @radnortx1 wrote: You don’t need to have UHD turned on. 4K works fine. Samsung default is off. Why keep screwing around? Your right! I’m done with this.  Never really saw a difference in picture quality with it on or off   Thanks  ... View more

@WindsurfMaui wrote: RickGr4, Thanks for the help on this. It was interesting to see behind the scenes. If I'm not mistaken the SNR numbers where I listed a range was the signal strength for each head I just showed them as a range.   I was in the MOCA diagnostics but couldn't find any number that looked like the answer. And the second page was just a large spread sheet.   Brian, my connection problem disappeared when I upgraded my HDMI cables. Tomorrow I will put the old cables back on for a couple of days to see if the problem returns or if the fix was actually from Comcast in an upgrade.   Speaking of upgrades did everyone get a revision down from 98.1.2 to 97.1.4 the other night? Has anyone experienced a return to a lower level version before? Interesting. My upgrade did not go back to the lower one.   Summary of my issue since January: Sansumg 2017 Q7 TV   I tried everything suggested on this foum, not to mention changing boxes and countless visits and telephone converstations with comcast.  The one thing that works that was suggested by a forum member is turning off the UHD to the HDMI port on the TV used by the X1 box.   This works all the time.    A few weeks ago after the upgrade to the 97.1.4 version I turned the UHD back on.  It worked for nearly two weeks.  Previously it would not make the handshake every 2/3 days.  Then the handshake issue came back and once again I have the problem every 2/3 days.  After the upgrade to the 98.1.2 version the problem is still there.   That is every 2/3 days I have to restart the X1 via the App to get a picture.   One thing that is different is that now when I turn it on and the TV does not make the handshake I get sound but no picture.  One additional thing I saw on some posts regarding the power saver being on  having some affect on the handshake.  With my system and issue with the power saver being on or off makes no difference. Maybe some day it will get fixed but not optomistic after 5 months (for me). ... View more

@WindsurfMaui wrote: It sounds wierd to me that an update would fix the problem and then it would stop after 12 days without something else changing. Did you make any other adjustments since then? There has to be some other reason that the problem returned. I did not make any changes to my system.  Previously, the problem would take place every 2 or 3 days.   Meaning everthing worked fine with the UHD turned on for a few days then I would have to restart the X1 to get the picture on the TV.   Today I turned on the system and no problem.  I will let the forum know if I am once again experiencing the same issue evry 2/3 days  know it looks like that patten is happening   Time will tell ... View more

@WindsurfMaui wrote: Is everyone still on version 97.1.4? no new updates? We can't blame a new update that started the problem up again? That’s the update I’m on. Like I said previously.  That update fixed my issue for maybe 12 days.  Then it started again.  Been dealing with for many months.  See my posts since January.  Thought it was fixed but was wrong.  ... View more

@rlee131 wrote: @jmg1951 wrote: Comcast are the people who told us that they were issuing software/firmware updates to fix the problem. If this is not what we should be hoping for what else is there, for them to exchange our hardware?  After seeing comments about the recent update I turned the UHD to the X1 HDMI port back on to see if it fixed the issue on my system.    Having it off resolved the problem as you had suggested.  It is now working with the UHD back on  No problem any longer with the HANDSHAKE problem.   Don’t know why it is now working for my Samsung TV and not others But “I’ll take it”. Following this forum  for this issue has been very helpful.  Thanks for the help  Well I spolke to soon.  The handshake issue came back today.  Previously I would experience the issue every 2 to three days.  This time I went for 12 days so I thought it was FIXED so I  posted that it was working.   WRONG today back to the same problem.  Many months now so I suspect it will never get fixed. ... View more

@jmg1951 wrote: Comcast are the people who told us that they were issuing software/firmware updates to fix the problem. If this is not what we should be hoping for what else is there, for them to exchange our hardware?  After seeing comments about the recent update I turned the UHD to the X1 HDMI port back on to see if it fixed the issue on my system.    Having it off resolved the problem as you had suggested.  It is now working with the UHD back on  No problem any longer with the HANDSHAKE problem.   Don’t know why it is now working for my Samsung TV and not others But “I’ll take it”. Following this forum  for this issue has been very helpful.  Thanks for the help  ... View more

@RickGr4 wrote: New software and firmware roll out in waves across the country. It can be a  week or two before everyone has the latest. Comcast never provides exact dates. @jmg1951 wrote: I was told by Comcast that their waiting for .3 release to be released because they want to send it to me to try, that was 3 weeks ago. Guess we’ll (I will See). I’ve been dealing with for many months (Check  my posts from Jan) a member on the forum suggested a couple of months ago that I not select the UHD going into my Samsung 2017 Q7  TV from the X1 box. It worked for a few months since he suggested.  After seeing some posted there were Comcast updates that had come out   I tried turning the UHD HDMI PORT BACK ON.  guess what.?  The next morning when I turned everything on again, the HANDSHAKE propblem back.  Had to restart the X1.  Then I once again put the HDMI Port back to UHD.  Now NO MORE HANDSHAKE ISSUES. just like before anyway for me the issue was resolved a few months ago my turning off UHD to that HDMI port just one thing I have seen a few posts that some said that by turning off the UHD to the port you will not get a UHD 4K picture.  Well, for me just as the person said that suggested that, IT IS TRUE (at least for my system) there is no detoriation in picture quality.  The person that suggested doing that said that it  is because of the way the X1 sends the signal.   I have no idea BUT what that forum person said was correct, at least for me and my system.  Hope this is helpful because I’ve seen so many conflicting posts rlee131     ... View more

@Rozr1 wrote: I've had this issue ever since getting my 4k box. I have a samsung hu8550 (2014). Tech came out and said to try new hdmi cable. Try new hdmi cables that exceed 4k specs and still have same issues. Only way to get picture is to power box off and on. Guess I need to try hdmi color off and also should try port 3 on my tv since its 2.2 hdcp capable. All the other hdmi ports are hdmi 2.0 which are 4k ready. Rozr1 Several months ago I had the issue that had been going on for many months with my Q7 2017 Samsung TV  I have many posts you can review around Jan and Feb   Tried everything, new boxes, cables, comcast out 4 times, telephone calls to comcast nothing workied UNTIL  one of the members of the forum said try turning off th UHD to the HDMI port the x1 box is connected to.  It will not change the picture quality I did that and have not had the issue even once since then.  Give it a try maybe will work for you   Good Luck ... View more

@rlee131 wrote: Acturally the light on my box in power saving mode does go off after a couple of hours after the tv is turned off.   Then in the morning it does not go on till I hit the remote turning on the box, Sound and TV.   This happend all the time until I change the HDMI setting that fixed the handshake.   Now when I get up in the morning about 50% of the time the X1 box light is on unlike previously when the the was not on till I hit the remote.   Not a big deal, dont really care about the power saving mode its just that  for some reason it does not function as it did befor Just an update  The handshake issue has not been a problem now for over a month since as suggested I turned off the UHD to that HDMI Port.    But now the box light NEVER goes off (sleep mode) eventhough its set for power savings.  Had a tech out and he changed the X1 Box.  The first night it went to sleep after that it now never goes to sleep mode.     At least the handshake issue is resolved  NO THANKS TO COMCAST.   Anyone know how to solve the issue of the box never going to power savings eventhough the power savings is turned on? ... View more

Did you try what jmg1951 suggested.  That is turning offf the UHD on HDMI connected to the X1 Box.  On my tv I found that in the TV settings   I tried that about a month ago and have not had the problem of Black screen since.  However,  for some reason it created another issue which is that the X1 box never will go into the sleep mode even though I have that setting turned on.   I had comcast out the other day and the Tech said its is not suppose to go to sleep.  Well that is contray what the information says right under where you turn power savings on/off as well as contrary to what I have experienced  Anyway he changed the X1 box.   That night when I turned off the TV, the box light stayed on But later went into power savings mode because when I got up in the morning the X1 box light was off.  And when the TV came on it did say I had saved 6 hours in power savings.    That was three days ago and since that one time of the new box  going into power savings mode, it no longer is going into power savings, event though power savings is turned on.   At least I am no longer having the black screen Handshake problem.    So if you have not tried turning off the UHD to the port give it a try, it solved my issue and there is no difference in the picture quality its sill great 4K.   jmg1951 had said that the UHD setting is not needed for the X1 box which proved to be correct in my case.       ... View more

@jmg1951 wrote: Yes I got that message also when the TV and box came on together. I was also told that even if the box goes to sleep at night the recorder still works. So if you have anything programmed to record in the middle of the night it should work sionce its all cloud based, I never did try it. Strange now.  After I changed the HDMI Port setting on the TV, like I said previously that fixed the handshake issue, the X1 now never goes to sleep the first few times after changing it would go to sleep “sometimes” now it.  never goes to sleep  ... View more

@radnortx1 wrote: My tech said light won’t go off but box goes to sleep. Today I was good but we’ll see tomorrow. Contrary to that tech  My X1 box light DOES go off when in power saving mode.  THEN when you turn the TV and Box back on you get a message on the TV saying That you have saved power  by your box being off for for so many hours. (para phrase)   You will not get this message when you turn your TV on if the light on the X1 box is already on when you turn the tv on..   Try it   Manually turn off the box when done with the TV  Then turn off the TV.   When you turn the TV and box on after several hours or overnight you will see that message.   ... View more

Acturally the light on my box in power saving mode does go off after a couple of hours after the tv is turned off.   Then in the morning it does not go on till I hit the remote turning on the box, Sound and TV.   This happend all the time until I change the HDMI setting that fixed the handshake.   Now when I get up in the morning about 50% of the time the X1 box light is on unlike previously when the the was not on till I hit the remote.   Not a big deal, dont really care about the power saving mode its just that  for some reason it does not function as it did befor ... View more

Amazing that you have been able to get Comcast to say they are working on it. In my area I gave had three technicians out to my house, 4 telephone conversations with support (two times with supervisors I requested to speak to) replaced the X1 box twice, and one visit to the Xfinity store  EVERYONE says they have no knowledge of the problem and it must be my TV.  Anyway your suggestion to turn off UHD to the HDMI port WORKED so all is good now one issue that has shown up is that even though the X1 is set to power saver every couple of days in the morning before turning the system on the light on the X1 is already on so it did not turn off since I last shut down the TV ( 14 hours  not worried about because your fix took care of the HANDSHAKE issue Would love to connect your Comcast people with those supporting this area  ... View more

Good News.  SO FAR  I have not had the problem since I tried your suggestio to turn off the UHD setting to the HDMI port that the  X1 box is connected to.    It has been 10 days since I changed the setting and have not experienced the black screen issue.  Prior to that I had to restart the X1 every 2/3 days to get a picture on the TV.   Thank you for your suggestion.   I have been having this problem for months and tried everything people on this forum suggested.   Nothing worked till you mentioned this. Hopefully it stays like this.   @rlee131 wrote: @jmg1951 wrote: I found 2 solutions to this problem. 1)On your Xfinity remote go to settings, device settings,power preference, and turn your power saver ON. Box will go to sleep at night but when you turn your tv on in the am it will turn the box on also. When both the box and tv turn on together the video will connect with no problem. 2) If you have a Samsung tv or a tv with the HDMI UHD COLOR setting turn it off for the HDMI cable box input. Per Samsung this setting must be on for any type of gaming because it increases the refresh rate but for a cable box with 4K it has no effect. I have mine turned off and it’s been working every morning for the last week and the 4K does come thru on Netflix. Thanks for your suggestions.  #1 That’s how mine is currently set.   #2 I’ve never tried that.  I just changed and will see what happens.  I’ll let you know. I sure hope that works.    ... View more

@Rustyben wrote: simplest work-around is to change the TV to a different live HDMI port then back to the DVR port. Tried that previously. Does not work for me  ... View more

@jmg1951 wrote: I found 2 solutions to this problem. 1)On your Xfinity remote go to settings, device settings,power preference, and turn your power saver ON. Box will go to sleep at night but when you turn your tv on in the am it will turn the box on also. When both the box and tv turn on together the video will connect with no problem. 2) If you have a Samsung tv or a tv with the HDMI UHD COLOR setting turn it off for the HDMI cable box input. Per Samsung this setting must be on for any type of gaming because it increases the refresh rate but for a cable box with 4K it has no effect. I have mine turned off and it’s been working every morning for the last week and the 4K does come thru on Netflix. Thanks for your suggestions.  #1 That’s how mine is currently set.   #2 I’ve never tried that.  I just changed and will see what happens.  I’ll let you know. I sure hope that works.  ... View more

@EricinChicago wrote: Yes I too have had this problem since getting the 4k box. I have a 78'' RCA however it's rumored to be a rebranded Samsung so this isn't surprising. Tried two different boxes and had Comcast try persistently to send a tech out to look at the issue which I refused as we all know it's nothing to do with anything but the box. There's been maybe five forums here about this since the issue started but comcast closes them all with someone claiming a resolution at the end which does not work. I too have been unable to have anyone at Comcast admit the problem. It's ridiculous with the prices they charge they can't or won't resolve this but don't expect anything anytime soon as this has been going on over a year now. Looking at options from RCN and AT&T now as this is unbearable.   Thanks for your post.  Not sure if I am going to change or just keep dealing with.   As seen through this forum it is Nation wide issue with the X1 box.   Just an update with my particular issue.  Previously I had to restart the box when turning on in the morning every 2/3 days.  For  the last 10 days it has been every other day.    ... View more

@jmg1951 wrote: I have a Samsung Tv also and have tried all the mentioned possible fixes with no results and the handshake problem still exsits !  On Jan 31,2019 Comcast pushed thru a firmware update which was supposed to fix this problem. Sorry to say it changed the problem to now instead of a black screen when the tv is first turned on in the morning it now has a blue screen and the cable box still needs to be rebooted daily! Good job Comcast Enginerring, it's only been a year and you still haven't fixed the problem!!!!   JMG1951 Thanks for the info.  This morning went on ok, BUT for me does not mean it was fixed yet.  I get the issue every 2/3 days.  I did it yesterday but not today.   Just wondering what area do you have your service. I'm in the San Francisco Bay Area.   With all my contacts with Comcast they have never admited to a problem.  Always are ignorant it.   ... View more

Have not seen @Rustyben wrote: @V8_5-OH wrote: I'm new to this forum. Does anybody know if Comcast ever replies to this or other forums? From some of the posts here, doesn't seem like Comcast's responses to direct inquiries are helping. Time to contact the CEO? Comcast official employee said the engineers are working on the issue. I have one too. be patient. I’ve never seen a reply.  If they did they would have addressed the problem and responsibility  if Comcast actually accepts responsibility. I have not seen anything ... View more

@Rustyben wrote: until resolved the easy way is to change the TV input HDMI port to another live device then back the the set top box.  Tried that.  Same result   Handshake problem still there every couple days  ... View more

@vandenburg wrote: I have a brand new Sony  XBR75X900F 4K TV and Inneos Real4K fiber connection. Same thing, next day when I turn on the TV... no signal. Thought it must be Inneos that was the problem and have swapped out two Comcast boxes waiting hours at the local store. Now find out that everyone else is having the same problem. Comcast employees know nothing about this apparently common issue. Very frustrating. Everyone is correct, the only real fix is to power cycle the box. I also have  ProControl 24 remote so I wonder if I can have Best Buy program that to power down the Comcast box at the same time I power down the TV and turn the box back on with the TV, that way a restart always invokes the handshake and I don't care then if they ever fix it. Will advise. Ihave my Samsung TV, Denon Reciever and X1 box all set up so that the X1 remote turns on all three.   Handshake issue is still there about every 2 or three days for last few months.  I also set up a Logitech Remote that I never use anylong to turn on and off all three, Handshake issue is the same not difference if I use that remote or the one that came with the X1 box   I've also tried turning on X1 box, TV, and Sound Reciever Independently same problem every 2/3 days.    Tried pretty much everyting listed on this forum with same result.   There is a Handshake problem which appears to be with the X1 box.  I did find one person on this forum that said they did get comcast to indicate it was an issue with the X1.   Not sure where he lives but in my area three different techs that came here and four different phone support claim they know nothing   Very frustrating.   I have been using  the Xfinity App to restart the box but for me I found it is easier to just use the xfinity voice command "Restart X1" to get the process going and get it working.   Let us know if you find a soulution   ... View more

        @V8_5-OH wrote: Same problem - sporadically (once every few days) get no or intermittent connection with white or black screen. Swapped out cables (4K-certified, tested by expert installer)/all device ports (BluRay, Apple TV) to localize problem to the cable box's HDMI port. Have the same problem with a non-4K satellite box, but not as frequently. Haven't contacted Comcast support yet. My best fix is to unplug the HDMI cable from the 4K X1 box, wait 15 s, and then reconnect. I have a Sony UHD 4K TV/Sonos PlayBase and otherwise get astounding picture quality and sound with all X1's 4K services (e.g. Netflix, Prime). I haven't tried tweaking the TV's or the box's settings yet. Thanks everybody for your helpful comments!!   Unbelievable that comcast won't address the issue, or where I live even admit there is an issue.  I've had them out three times and they can do noting other than blame it on the TV.  Which after reviewing all the postings over the months tend to believe it is a comcast problem.  I have tried everything that has been posted over the months and still have the problem.  My TV is a Samsung.   By the way you can also retart the X1 box via the "My Account" Xfinity App.   For me its easier than unpluging at the box.  Keep me posted if you find a solution. ... View more

@Anon1464678 wrote: Here are a few observations: 1) A firmware fix has not been pushed out yet to my X1 box 2) The power saving mode on the X1 box is not working. The box does not power down automatically when the TV is off and I am not watching. 3) If I power down the box manually before going to bed, either through the voice command or on the power down menu, the box will wake up normally in the morning. That is a workaround that I am using now until this is fixed.   These are my observations: With my X1 I am getting the firmware updates.   My X1 does power down when turned off. I usually turn my system off/ on  with one remote that activates the TV, X1 Box and Denon sound system.  When I tried turning the X1 off with the voice command then manually turning other components off I STILL have the problem.  But like I said previously not every time its turned on.  It happens every 2/3 days.   ... View more

Thanks for respons   Same issue here.  Oh maybe someday will get fixed. ... View more

When and how did Comcast admit to the problem?  I have them out to my house three times and had two telephone conversations with their Technical Support never once did they admit to the problem.  In fact none of them (at home visits and telephone conversations) were aware of such an issue.   They blamed it on my TV and once blamed it on my utility company (PG&E) which I had them come out and said it had nothing to do with them. So I am now living with just restarting my X1 box via the App every time it does not connect with the TV when I turn it on.  Not every time it’s turned on but periodically, usually every two to three days? ... View more

Xfinity App. “My Account” ... View more

Installed the firmware update  Version 1262 for the TV    Did not help.  Today when turned on TV X1 box once again would not connect.   As usual I had to restart the X1 via the App   I suspect this will never be solved.  ... View more

Just an update to my long on going issue.  Today I saw there was a new update available for my TV (2017 75” Samsung. Q7F). I contacted Samsung to see if they knew if this would fix the problem.  Big mistake person was clueless and wanted me to try different things I have already did over several months.   Finally told him he is not familiar with the issue previous support people told me that they were aware of the issue and if I installed firmware update 1260 it would fix the problem.    It did not so now there is a new firmware available 1262   and I wanted to know if this would fix the issue.   A TOTAL WASTE OF 30 minutes.  This person as usual was clueless Anyway I installed the new firmware.  I will post when I see if it works.   Being the problem is intermittent only happening every 2-3 days I’ll have to wait and see.  I’m not to optimistic.   Anyone out there solved the problem? ... View more

I’ve never experienced that problem. My 4K is always perfect ... View more

I agree. Same with mine usually works fine for no more that three days. ... View more

Hi  Lots of posts regarding this issue.   My problem has been going on for over 2 months   Many posts have to do with Samsung TVs  although there are others.  Opinions vary from its an Xfinity issue with the X1 box to its a Samsung issue and a "handshake " problem..  Nevertheless its not being solved....  Ive had comcast out three times changed box and hdmi cables and tried on every tv hdmi port same problem    Ive had no problems with apple tv, Sony playstation or Amazon,  All 4k   Check out all posts "maybe" someday someone will admit fault and fix for the customer. ... View more

Guess you got lucky? I tried every port several times did not work for me. Issue has been going on for me for two months ... View more

Thanks.  I just don’t understand   ARC  stands for Audio Return channel.   MY TV has only ONE ARC HDMI PORT   I have been told that that port is when you have special sound equipment connected through the HDMI   My sound system is connected to Denon receiver via optical from the tV I have moved the X1 HDMI to every  port with same results  the 5 other ports are not ARC  All my other 4K devices ie: Apple TV, Amazon, and Sony Play Station have no issues.  Great pictures and surround sound Would seem like a Samsung issue but seems people with Sony having same issues.  ... View more

Today is Dec 23 the third day since I upgraded the TV firmware to v1260 at the direction of Samsung Support.   The problem, as I thought it would came back this morning.  I had to restart the X1 box via the app.    Does anyone know for sure if this is a Samsung or Xfinity issue.   Both seem to point fingers at each other leaving the customers with no resolution.  ... View more

Rebooting the box after changing the port does not help ... View more

I have the Same issue with Samsung Q75 TV.  3 different Xfinity tech have come out and can’t figure it out.  They did change the box and HDMI cable one tech said it was a voltage leakage problem and to contact PG&E (Utility company).  They came out and checked EVERYTHING related to the power coming into my home.  It’s fine NO ISSUES  I have also tried connecting to each of the 6 HDMI Ports.  Does not fix the issue Talked with Samsung support and said I needed to update TV firm ware. I had version 1250. They said update  to 1260.  The TV said there was no updates available so they sent me a link to download on flash drive   Installed today.  I will see if this fixed the issue.   With my issue it does not do this every morning when the  TV is turned on.  Sometimes it may not do it for 2 or 3 days so in a few day I shoul know.  I’m not to optomistic.  Additionally all my other devices 4K work fine on all ports (Apple TV, Sony PlayStation and Amazon Fire)    ... View more