Russell L. Harris put forth on 12/27/2010 4:28 AM: > None of these are a factor; the nearest potential source of > interference is a ceiling fluorescent fixture. And I see the same > pattern with the machine in different rooms.
The line artifacts you describe, if you are indeed describing them accurately, are nearly always caused by static stray magnetic fields. Something as innocuous as a small decorative refrigerator magnet stuck to the PC case can cause things like this. I can almost guarantee you from knowledge and experience that if you have the same line artifacts with two different mobo models or two different vid cards that it's not the mobos or vid cards causing the problem. Did you ever actually bench test your components? I highly doubt you did or you'd have already discovered the boards aren't the problem. You have not described any detailed troubleshooting or bench testing procedures, only anecdotal evidence. For instance, if you are doing all your mobo testing inside the case, then you haven't followed proper thorough testing procedure. You need to eliminate _every_ component, including "inert components" of the system, including the case itself. If anyone ever in the history of that case stuck a magnet on it, especially one of any strength, for any length of time, the case itself will now be magnetized, unless it's an all aluminum jobby. Alums make up less than 1% of the market and this isn't a home gaming/overclocking kids, so odds are very high you have a steel case. A magnetized case could cause the exact problem you describe. I've seen this exact scenario before in custom car stereo shop. One of the trunk monkeys (installers) had affixed a coax door speaker to the PC case in the owners office, being the dichotomous ignorant know-it-all kid he was. He'd stealthily removed it when the owners wife started complaining about lines on the screen. They wanted to replace the CRT, so I took it back to the shop when I went for the replacement. I tested it first. No lines. Took the new one out--lines. I touched a paper clip to the case and it stuck. Bingo. The installer later copped to sticking a speaker to the case and apologized, claiming ignorance. At least he was being honest. It's touch for a know-it-all to admit ignorance. -- Stan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4d18f04d.3040...@hardwarefreak.com
