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Tek
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Problem Solver

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630 Messages

Mon, Jun 22, 2020 8:00 AM

XG1v4 Jumping to 4k Resolution

Starting last night, my box keeps going to 4k resolution. I have a 4k TV, but use an HDMI Extender that does not. As a result, it keeps knocking my picture out.

If it is not on 1080p in device settings on the box then my picture is gone.

Why is the box suddenly changing my video settings in the box?

Never had this issue for 2 years with this box.

Responses

Accepted Solution

Tek

Problem Solver

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630 Messages

1 y ago

I just signed up for YouTube TV. Keeping internet only. 20 years and I have had it with them. I having other issues, but this was the icing on the cake.

Regular Visitor

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1 Message

1 y ago

Same exact thing except my TV still works most of the time. Best fix, get rid of the Comcast 4k box, especially if they are charging you extra. Stay with their older HD box and get Chromecast or Roku for 4k. Their 4k boxes are junk. I had to turn off my true color / active matrix / each TV manufacturer calls it something different but same underlying technology. Dozens of people across numerous forums and it was a user that accidentally found the workaround. Plus the colors are not correct with Xfinity 4k, especially with reds shading to orange more noticably than any and that occurs anytime it's set to 4k, even if picture is only HD. And then there was the update that broke all wired boxes to other TVs and them not having the Xi4 / Xi6 boxes at sufficient quantities yet to get service back to other TVs. Like I said, dump the 4k box. Look around the Xfinity forums, look at all the issues, and look forward to the next rate increase they already announced for late in 2020 back in February.
Tek

Problem Solver

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630 Messages

1 y ago

FYI. My other thread on this was locked for some reason with no resolution.  However, this week they updated the boxes to automatically select the best video resolution setting available.

 

This is an issue if your box thinks your TV is 4k and it is not for example. Advanced repair contacted me and there is now a setting in General Settings to lock the resolution.  

 

They had many calls on it. It was causing my picture to blank out everytime turned the TV off and on.

 

If you prefer a certain resolution then you should turn this to on. 

CCAndrew

Diamond Problem Solver

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25.9K Messages

1 y ago

Sounds like the boxes may have done an HDCP update
CCAndrew

Diamond Problem Solver

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25.9K Messages

1 y ago

Your previous thread, was marked solved and usually close with nothing new to add
Tek

Problem Solver

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630 Messages

1 y ago

It was locked before it was marked solved. None the less, this is an issue for older TVs or people using hdmi to dvi or hdmi extenders. 

Administrator

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4.3K Messages

1 y ago

@Tek 

 

Thank you for posting your questions here in the Xfinity Forum. We sincerely apologize for the inconvenience you have experienced. We recommend modifying the resolution on your Xfinity television box. You can do so by pressing the following button sequence on your Xfinity television remote, “exit, exit, exit, 720”. 

 

Please let us know if you have any additional questions. 

New Poster

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2 Messages

10 m ago

My X1 is doing the exact opposite. I have a 4K TV, and 4K audio video receiver, and have set the X1 video output to 4K best available.

Every day it reverts to 1080p and I have to change the X1 video output to 4K, again.

The X1 software/ firmware is very buggy. All you have to do is look at these forums to see the problems.

.

Rustyben

Expert

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24K Messages

10 m ago


@KenH1 wrote:

My X1 is doing the exact opposite. I have a 4K TV, and 4K audio video receiver, and have set the X1 video output to 4K best available.

Every day it reverts to 1080p and I have to change the X1 video output to 4K, again.

The X1 software/ firmware is very buggy. All you have to do is look at these forums to see the problems.


To what is the HDMI cable from the set top box connected? 

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New Poster

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1 Message

9 m ago

I have the same problem with 4K resetting down to 1080p nightly. In my case the xfinity box connects directly to my 4K Denon AVR receiver. All my cables are certified for 8k end to end. Denon and LG 4K HDR TV are capable and certified for 4K HDR10 picture. I have no problems after manually setting best available 4K each day.
timc1475

Frequent Visitor

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9 Messages

9 m ago

I have the same issue as well. Especially after I visit either YouTube via the TV's APPS or the Comcast YT APP it often downgrades to 720p or 1080p and I have to constantly go into settings and change back to 2160p best available.

 

I called Comcast but they just did standard screen read protocols which was ineffective.

 

There is no available "Lock resolution" option. For years this was a non issue so either the box is getting defective or their updates did it.

 

With the covid Chinese virus plague, it can take hours to get to a live agent sadly, so most just live with it.  I may try to have the box swapped out as I think my local xfinity store re-opened in a limited way.

Dahmenator

Contributor

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33 Messages

9 m ago

I'm having the same problem as well.

 

I have a 4K TV with a 4K receiver and all the appropriate HDMI cables.

 

Every single time I turn off my system and turn it back on again, the X1 box reverts back to standard 1080p HD. It won't "stick" the 4K UHD (Best Available) setting. I have to manually switch it every time, even if the system is only powered off for a second.

 

This is a recent issue (started around 6 or 8 weeks ago), so I'm guessing it's buggy firmware.

Rustyben

Expert

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24K Messages

9 m ago


@Dahmenator wrote:

I'm having the same problem as well.

 

I have a 4K TV with a 4K receiver and all the appropriate HDMI cables.

 

Every single time I turn off my system and turn it back on again, the X1 box reverts back to standard 1080p HD. It won't "stick" the 4K UHD (Best Available) setting. I have to manually switch it every time, even if the system is only powered off for a second.

 

This is a recent issue (started around 6 or 8 weeks ago), so I'm guessing it's buggy firmware.


is the set top box connected directly to the TV's HDMI1 or HDMI2 (4k designated port)? is your set top box set to 'expert' under resolution?

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!tick
Dahmenator

Contributor

 • 

33 Messages

9 m ago


@Rustyben wrote:

@Dahmenator wrote:

I'm having the same problem as well.

 

I have a 4K TV with a 4K receiver and all the appropriate HDMI cables.

 

Every single time I turn off my system and turn it back on again, the X1 box reverts back to standard 1080p HD. It won't "stick" the 4K UHD (Best Available) setting. I have to manually switch it every time, even if the system is only powered off for a second.

 

This is a recent issue (started around 6 or 8 weeks ago), so I'm guessing it's buggy firmware.


is the set top box connected directly to the TV's HDMI1 or HDMI2 (4k designated port)? is your set top box set to 'expert' under resolution?


@Rustyben,

 

No. My STB is connedting to my 4K Yamaha receiver which in turn is connecting to the 4K ARC HDMI input on my 4K TV. This is the way I've had it setup for almost two years and has never resulted in this issue until about 6 or 8 weeks ago.

 

Also, I don't have an "Expert" setting in my STB's Video Display settings. I do have an "Expert" setting or Audio and it wasn't set to that. It was set to "Auto Detect (Dolby 5.1)". I changed it to "Expert" turned off my system, restarted it, and the video resolution still reverted back to standard 1080p HD. 

Rustyben

Expert

 • 

24K Messages

9 m ago


@Dahmenator wrote:

@Rustyben wrote:

@Dahmenator wrote:

I'm having the same problem as well.

 

I have a 4K TV with a 4K receiver and all the appropriate HDMI cables.

 

Every single time I turn off my system and turn it back on again, the X1 box reverts back to standard 1080p HD. It won't "stick" the 4K UHD (Best Available) setting. I have to manually switch it every time, even if the system is only powered off for a second.

 

This is a recent issue (started around 6 or 8 weeks ago), so I'm guessing it's buggy firmware.


is the set top box connected directly to the TV's HDMI1 or HDMI2 (4k designated port)? is your set top box set to 'expert' under resolution?


@Rustyben,

 

No. My STB is connedting to my 4K Yamaha receiver which in turn is connecting to the 4K ARC HDMI input on my 4K TV. This is the way I've had it setup for almost two years and has never resulted in this issue until about 6 or 8 weeks ago.

 

Also, I don't have an "Expert" setting in my STB's Video Display settings. I do have an "Expert" setting or Audio and it wasn't set to that. It was set to "Auto Detect (Dolby 5.1)". I changed it to "Expert" turned off my system, restarted it, and the video resolution still reverted back to standard 1080p HD. 


since you have a device between your set top box and the TV (video) there is no way to diagnose why the change is happening. the EDID of the TV is obviously not being seen/recognized at some point and the set top box goes to standby 1080p. Is there some reason you can not connect the set top box directly to HDMI 1 or HDMI 2 (not ARC) on the TV and then feed the audio back to the sound bar via the ARC connector? 

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!tick

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