Xfinity Gateway US/DS lights blinking Light — Meaning & Fixes
US/DS lights blinking on Xfinity Gateway: On cable modems like the Xfinity Gateway, the US (upstream) and DS (downstream) lights blinking together mean the modem is scanning for and locking onto the Xfinity (Comcast) cable signal..
On cable modems like the Xfinity Gateway, the US (upstream) and DS (downstream) lights blinking together mean the modem is scanning for and locking onto the Xfinity (Comcast) cable signal.
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Most likely causes
The modem is searching for the cable signal
The coax cable is loose or damaged
A Xfinity (Comcast) outage or signal problem at the tap
The modem is not provisioned
Try this first
Wait up to 10 minutes for the lights to lock solid
Finger-tighten the coax cable on the Xfinity Gateway
Check for damaged coax or splitters
Power-cycle the Xfinity Gateway
Check Xfinity (Comcast) outage status
If US/DS never lock, contact Xfinity (Comcast) — signal or provisioning issue