* Stan Hoeppner <s...@hardwarefreak.com> [101228 00:28]: > 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.
Ah-so! Now I see your point of confusion. At the start of the thread, I mentioned two motherboards -- a P5Q-EM and a M3A78-T. With the M3A78-T there were line artifacts. But with the P5Q-EM, the problem was simply that the display went blank when X started; there were no line artifacts. The X problem began with the installation of Lenny (stable); it was not present in Etch, and it disappeared once I installed Squeeze (testing). The line artifacts problem has persisted with multiple monitors (each with its own cable), multiple physical locations, and three trips back to the US Asus facility. Moreover, I have no external video card; the problem is in the on-board graphics of the M3A78-T. The only thing in common was the chassis and an Asus power supply. > 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. I understand what you are saying; but from my perspective, life is too short and components are too inexpensive to spend hours and days with this, when there is a work-around. I replaced the M3A78-T with another motherboard, using the same chassis and power supply, and there is no problem with line artifacts. The M3A78-T obviously is defective. RLH -- 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/20101228011027.ga22...@rlharris.org