[Savage40] Small video glitches with savage snapshot

[Alex Deucher]

--- Bjorn Knutsson <bjorn+savage at update.uu.se> wrote:
> On 8 Apr 2005 06:24, Alex Deucher wrote:
> > --- Bjorn Knutsson <bjorn+savage at update.uu.se> wrote:
> > > I downloaded and installed:
> > > 
> > >
> >
>
http://dri.freedesktop.org/snapshots/savage-20050407-linux.i386.tar.bz2
> > > 
> > > I disabled BCIforXv (from xorg.0.log):
> > > 
> > > (**) SAVAGE(0): Option: Disable use of the BCI for Xv
> > > 
> > > But both glitches are still present.
> > > 
> > > As before, if I drop Tim's 1.1.27t instead, I do not see these
> > > glitches.
> > > 
> > > The glitch relating to the top lines I only seem to get in xine,
> > > while
> > > the pattern happens in both xine and mplayer. I should note,
> however,
> > > that xine is my preferred viewer, so I've "tested" this much more
> > > exhaustively with xine. I'll switch to using mplayer for a while
> and
> > > see if I catch it there.
> > > 
> > > The shape of the pattern depends on the width of the video
> stream,
> > > and
> > > will be resized if you resize the content of the window, i.e.,
> it's
> > > like it's part of the original video, rather than a glitch that
> > > overwrites the current window.
> > > 
> > > For one width, it looks somthing like this:
> > > 
> > > ****     ****     ****
> > >     ****     ****     ****
> > >         ****     ****     ****
> > >             ****     ****     ****
> > > 
> > > across the video window. For another width, they're boxes:
> > > 
> > >     ****    ****    ****    ****
> > >     ****    ****    ****    ****
> > >     ****    ****    ****    ****
> > >     ****    ****    ****    ****
> > > 
> > > One easy way to provoke them to appear is to scroll a
> firefox-window
> > > next to the video window. The exact bit pattern of the pattern
> will
> > > change as you scroll, which makes me think that the pattern is
> > > actually a rectangle of the current screen that for some reason
> gets
> > > mapped into the video window, with different skews depending on
> the
> > > video window width. (We get the rectangles if the video window
> width
> > > is an integral multiple of the rectangle width.)
> > 
> > Can you try disabling the DRI and see if that fixes the video
> problem?
> > comment out the load dri line in the modules section of your
> config.
> > It may be a FIFO/bandwidth issue that shows up when 3D is
> configured. 
> 
> I commented the line out, same thing.
> 
> > Also what chip do you have?
> 
> 01:00.0 VGA compatible controller: S3 Inc. SuperSavage IX/C SDR (rev
> 05)
> 
> It's a T23.

I dunno.  The supersavages are the least supported since we know the
least about them.  I dunno what might have changed that would cause the
problem.  the Xv code is pretty much the same.  It may be a tiling
issue.  try adding:
option "disabletile" "true"
to your config to use a linear framebuffer.

Alex

> 
> /Björn



		
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