<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Jun 7, 2006, at 8:38 AM, Will Constable wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <DIV class="Section1"><P class="MsoNormal"><SPAN style="font-size:10.0pt;font-family:Arial">I am running a frontend via s-video and when I use the same TV and s-video cable from my laptop via windows I get a perfect picture, but using linux on my myth box there is something wrong. The color is fine but there are vertically oriented bars of distortion that scan from left to right constantly—they are transparent in the sense that you can see everything on the screen just fine at any given time, but they are really annoying to look at. I am wondering if the video card itself, an old Geforce 4 MX420 I had lying around, is just not a good enough card or might be damaged, or if maybe a setting for the nvidia driver in my XOrg.conf could fix this. Any suggestions?<O:P></O:P></SPAN></P></DIV></BLOCKQUOTE></DIV>That card should work OK, at least it should produce distortion-free pictures.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>Is what you are seeing a "windshield wiper" type effect ? This can be caused by another video signal that's slightly out of time to the one you are wanting to watch, you often see it on a TV set that is overloaded by input signal and the adjacent channel gets into the picture a bit, or it can be caused by an overloaded cable or antenna amplifier ("cross-mod" or composite triple beat products).</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>But to see it on a pure computer video would be odd, are you perhaps running in twinview with a different signal on the DVI/VGA output ? </DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Do you see the same problem on the straight DVI/VGA output of the card ?</DIV></BODY></HTML>