2013/9/22 Alexander Kapshuk <alexander.kaps...@gmail.com> > On 09/21/2013 06:32 PM, Al wrote: > > Bruce Hill wrote: > >> I have "Use smooth scrolling" checked and no such wavy line anywhere. > > > > Hmmm.... > > > > I just tried Firefox, and get the wavy line when "Use smooth scolling > > is checked (scrolling with the mouse wheel). It goes away when unchecked. > > > > Did the same in Thunderbird, and I don't see the wavy line, no matter > > what the setting. > > > > Al > > > > > Having the "Use smooth scrolling" option unchecked in both Firefox and > Thunderbird seems to have fixed the 'wavy line' problem for me. > > Thanks. > > > 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.
/JG
