Network - Wireless & Wired Connections

Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
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Level 7

Two separate Roku devices suddenly won’t make a wired connection after new modem installed

I have a TCL Roku tv and a separate Roku device connected to another tv. My modem was replaced by Comcast and they suddenly both won’t connect via Ethernet cables. Comcast came back out and both Ethernet lines are working. What is going on? I tried all the resets and rebooting and Comcast even brought another modem to try. Is Roku not compatible with newer modems for wired connection? The wireless connection works, but that’s not how I want it all set up. Any help will be appreciated. I’m at a loss.

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