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Tuesday, January 7th, 2025 3:01 AM

Issues with internet unstable

My connection for the past year on nights when it gets really cold has been unstable with decreased speeds, dropouts, packet loss. This happens more frequently when Temperatures outside reach 36F or lower. Once it warms up the frequency of drops are less. I've had a tough time getting help with this issue since it's intermittent and when a tech can come out it the issue disappears. Also since it happens at night if it is affecting my neighbors they might not notice it since it resolves by morning. I work nights so I might the only one catching this issue.


I've had a tech out so far and they have checked the cabling and put new coax connectors on all the cables on the house side. I also checked the cable drop coming to the house and everything looked good to him. Since this issue is so intermittent and hard for the techs to diagnose. Can my connection be put on a 24/7 signal log. So the instability can be detected? I'm almost 100% sure the issue is outside of my building wiring. 

2 Messages

3 months ago

I've replaced the modem and have done everything on my end to ensure that everything is up to par. I am a software engineer and like to think I have a decent understanding of the network infrastructure. With the new modem I had to manually set the dns on my machines to an open port which I felt was strange because it was defaulting to an xfinity website for some reason. 

Official Employee

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1.4K Messages

 

user_tncbto Since you have had a technician out previously, it would be best to get another one scheduled for further investigation. To send a direct message, please click on the chat icon in the top-right corner of the screen, and select "Xfinity Support" to initiate a Direct Message. 
Click "Sign In" if necessary
Click the "direct messaging" icon or https://forums.xfinity.com/direct-messaging
Click the "New message" (pencil and paper) icon
Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
Type your message in the text area near the bottom of the window
Press Enter to send it

 

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Expert

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109.9K Messages

3 months ago

What you have described typically points to this being a problem with the RF signals on the coax coming from the Comcast system somewhere. For curiosity, what do the modem's signal status values look like ? Try getting them here; http://192.168.100.1 or here http://10.0.0.1 

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

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