My UVerse is always losing signal. It loses signal when I turn on my computer or even just throughout the day when Im on the internet. It is becoming more frequent to the point of unreliability and Im tired or having more downtime than uptime.
Looks like a combination of things that are wrong with your line. Call AT&T and say you are having problems with your Internet / tv not working. A tech will come and check your inside wiring. If that is not the problem then he will get an out side tech to clean up the line by removing unnecessary line elements and put a new ground at the nid.