[mythtv] Black screen after program guide

John Harvey john.p.harvey at btinternet.com
Sat Nov 20 15:25:34 UTC 2004

Something that is caused by a race condition between 2 parts and then shows
up because one of those changes doesn't meen that thing that changed is
wrong, just that its performance has changed and has exposed a bug (that was
always known about) in the other.


> -----Original Message-----
> From: mythtv-dev-bounces at mythtv.org [mailto:mythtv-dev-bounces at mythtv.org]
> On Behalf Of Isaac Richards
> Sent: 20 November 2004 15:15
> To: Development of mythtv
> Subject: Re: [mythtv] Black screen after program guide
> On Saturday 20 November 2004 10:05 am, John Harvey wrote:
> > I've never seen it happen but it's a horrible interaction between the X
> > driver, the OSD interface in myth and the way the card needs driving. So
> it
> > isn't really the fault of myth or ivtv alone but more about myth trying
> to
> > overcome shortcoming in the xdriver.
> > I do have some thoughts about this but not enough time at the moment to
> > make any progress about fixing them.
> >
> >  I think saying that its an ivtv issue purely is a bit harsh since its
> > really caused by the way myth talks to the 350's frame buffer directly
> for
> > some things but uses X for others and a race condition between the 2
> > causing this behavior.
> It doesn't happen at all with 0.1.9.  Only started happening in newer
> revisions.  Therefore, it is solely an ivtv driver bug.
> Isaac
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