[sugar] Preparing for the feature freeze

[Erik Garrison]

On Wed, Jun 04, 2008 at 10:28:25AM +0200, Tomeu Vizoso wrote:
> On Tue, Jun 3, 2008 at 7:19 PM, Erik Garrison <erik.garrison at gmail.com> wrote:
> > On Tue, Jun 03, 2008 at 01:53:37PM +0200, Tomeu Vizoso wrote:
> >> On Tue, Jun 3, 2008 at 1:50 PM, Walter Bender <walter.bender at gmail.com> wrote:
> >> > Alas, two more open bugs that should be considered by someone:
> >> >
> >> > (1) Record has been broken in Joyride for quite some time: ever since
> >> > the introduction of compositing? (#6850)
> >
> > I am looking into this.
> 
> Awesome.
> 

I currently believe that I've narrowed the bug down to something
involving the colorspace conversion filter used in gstreamer
(ffmpegcolorspace).  See the ticket (http://dev.laptop.org/ticket/6850)
for more details.

> >>
> >> Joyride has no composite enabled, so this seems to be something different.
> >>
> >
> > According to xdpyinfo the Composite extension is enabled on joyride
> > 1998.  So if this is different it is different in a way that xdpyinfo
> > does not know.
> 
> xdpyinfo reports that the composite extension is present, and I think
> that this has been like this since always. The difference between
> joyride and faster is that in the latter the window manager includes a
> composition manager that creates offscreen pixmaps for every window.
> Look for XCompositeRedirectSubwindows for more details in:
> 
> http://ktown.kde.org/~fredrik/composite_howto.html
> http://svn.o-hand.com/view/matchbox/trunk/matchbox-window-manager/src/composite-engine.c?rev=1084&view=markup
> 

Thanks.  This makes sense to me.

> > On 1998 I get the following messages to the virtual terminal (I assume
> > they are delivered via printk):
> >
> >  cafe1000-ccic 0000:00:0c.2: Frame overrun on 1, frames lost
> >  ... <59 printk messages suppressed> ...
> 
> No idea about this :/
> 

What it means is that userspace software isn't processing buffers from
the cafe chip fast enough.  So they get thrown away.  Does not appear to
be a problem with the cafe1000-ccic driver.

Erik