2gb Internet

Noticed huge drop in internet speed, from about 900mbps to 80mbps. Rebooted everything, same thing. Looked at my Motorola MB8611 event log after reboot, found these 2 errors:

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

Time Not Established

Critical (3)

UCD invalid or channel unusable

I also found out that even though I supposedly have the 2gb plan, according to my bill since February 2026, Xfinity thinks I only deserve 100mbps. It's been like that since March; behold:

I mean, REALLY?

I definitely need some help with this.

Responses

Oldest First

Selected Oldest First

EG

Expert

•

118.1K Messages

22 hours ago

Concern moved here to the Customer Service help section for greater exposure to Comcast corporate employees (The Digital Care Team) for assistance.

0

XfinityJorge

Official Employee

•

3K Messages

22 hours ago

guido542350 Hi there! Thank you so much for using our Forums and for taing the time to write us about your connection issues. We are here to help you and turn this around, so you have the best experience. Please send us a DM with your name and address to get started.
To send a "direct message" / "private message" message to Xfinity Support:
• Click "Sign In" if necessary
• Click the "Direct Message" icon
• Click the "New message" (pencil and paper) icon
• The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there
• As you are typing a drop-down list appears. Select "Xfinity Support" from that list
• An "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

3

0

Customer Service

guido542350

2gb Internet

EG

XfinityJorge

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