Contributor

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56 Messages

Monday, September 15th, 2025

Peacock streaming problem with resolution

My system has been working properly since I subscribed to Xfinity about 4 years ago. I’m using their XG1v4 DVR. No changes have been made since then.

However when watching a Peacock program two days ago the screen when black but still had audio. A message on the screen said “Mode Not Supported, Resolution not supported…”

Pressing any button on the Xfinity remote did nothing. I unplugged the DVR from power, waited awhile & plugged back in. It rebooted & worked again.

Did some searching & it appears the screen message is generated from the Samsung TV when it receives an incorrect signal. However everyone that had a problem had it from the start, IOW when first connecting a device to the TV something was not configured properly.

I never have a problem watching live TV or doing other on demand streaming, and that includes today.

I’m presuming Xfinity is somehow corrupting Peacock & perhaps other streaming sources. Anyone else have this problem?

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Contributor

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56 Messages

3 days ago

The problem is beyond Peacock. I was looking at Scheduled Recordings & the screen went black & displayed the message.

Visitor

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1 Message

2 days ago

I have also been having issues streaming on Peacock and On Demand as well on the tv. I don’t have any issues with WiFi or at streaming on other devices.

Official Employee

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2.1K Messages

Thank you for reaching out here. I will be happy to look into that issue from here. Have you gone through any troubleshooting steps for that on your Xfinity app?

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Official Employee

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2.6K Messages

19 hours ago

user_793642 Thank you for reaching out! The message "Mode Not Supported, Resolution not supported" may occur if your X1 XG1v4 TV box is connected to an HDMI port that is not 4K compatible, or the TV Box may be set to the wrong resolution to play 4K content. Here is an article that may help with the settings for the X1 XG1v4 TV box. 
 

 

Contributor

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56 Messages

Again I’ve had no problems for about 4 years until recently. No connections or wiring has changed. This is a random problem that occurs once or twice a day.

I also had the problem when streaming content using a Blu-ray player that’s connected to an Xfinity XB7 Gateway via an Ethernet cable. IOW a different signal path but the source is still Xfinity.

There is common signal path because the AV receiver does the switching. Both the XG1v4 & the Blu-ray player are connected to the AVR via HDMI, and the AVR outputs video to the TV via HDMI.

When I get the error message, briefly toggling the AVR input to another source & back clears the problem. I presuming this forces a new handshake in the signal path which clears the problem. But it’s not permanent.

Temporarily removing the HDMI cable from the TV also clears the problem. Again this probably forces a new handshake.

I’m presuming no matter where I momentarily break the signal path the system will do a handshake to re-establish the connection. This may make it difficult to track down the source of the problem.

(edited)

Official Employee

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2.6K Messages

That may be an issue with the port or the HDMI cable that is being used or port. I had similar issues on one of my older TVs when the HDMI port went bad, and I had to revert the TV to using the old school coax connections. Also recommend starting with checking the cable a quick swap with a different one would help determine if that is the cause from there. You can also try a different port on the modem as well. If there is any play when you attempt to connect to the port, it may have been damaged. If that is the case a new modem may be needed and that would be an easy swap.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick
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