<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body text="#000000" bgcolor="#ffffff"> On 09/23/2013 11:46 AM, Joakim Gebart wrote: <blockquote cite="mid:CAEVyRBKMksAO+NkRauiUqCt=f71UKy9fYYNb6M0nSy_j8B3hSQ@mail.gmail.com" type="cite"> <div dir="ltr"> <div class="gmail_extra"> <div class="gmail_quote">2013/9/22 Alexander Kapshuk <span dir="ltr"><<a moz-do-not-send="true" href="mailto:alexander.kapshuk@gmail.com" target="_blank">alexander.kapshuk@gmail.com</a>></span><br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;"> <div class=""> <div class="h5">On 09/21/2013 06:32 PM, Al wrote:<br> > Bruce Hill wrote:<br> >> I have "Use smooth scrolling" checked and no such wavy line anywhere.<br> ><br> > Hmmm....<br> ><br> > I just tried Firefox, and get the wavy line when "Use smooth scolling<br> > is checked (scrolling with the mouse wheel). It goes away when unchecked.<br> ><br> > Did the same in Thunderbird, and I don't see the wavy line, no matter<br> > what the setting.<br> ><br> > Al<br> ><br> ><br> </div> </div> Having the "Use smooth scrolling" option unchecked in both Firefox and<br> Thunderbird seems to have fixed the 'wavy line' problem for me.<br> <br> Thanks.<br> <br> <br> </blockquote> </div> I'm guessing the wavy line that you describe is 'tearing' that appears when the display is not synced to the framebuffer, i.e. "vsync". I believe some of the graphics drivers are not even capable of vsync currently in X11, but I'm not certain.<br> <br> </div> <div class="gmail_extra">/JG<br> </div> </div> </blockquote> That sounds right. I just wasn't sure how to best put it into technical terms.<br> <br> Thanks.<br> <br> </body> </html>