On Thursday 22 March 2007 10:10, Leo Weppelman wrote:
> On Wed, Mar 21, 2007 at 09:58:06PM +0100, Hans Verkuil wrote:
> > On Wednesday 21 March 2007 20:49, David A. De Graaf wrote:
> > > Does anyone else experience such a clock slowdown?
> > >
> > > Is there a fix?
> >
> > I strongly suspect what is wrong. A patch for this is in progress
> > and I'll post a messages for people to test it when it is ready.
> > Probably this weekend, in fact.
> >
> > I think that turning off any VBI support in MythTV might be
> > sufficient to workaround the problem.
>
> Mmmm, would this problem also explain why lirc no longer works when I
> try to watch tv in myth? I see that lircd receives data from the
> serialport, but it does not recognize this as keypresses on my
> remote.
> It started after my update to ivtv-0.10-1 last weekend....
>
> Leo.
Yes, this could well be the case. Also try disabling VBI support and see
if that makes a difference. I suspect the reason for the problems is
that the VBI support does PIO accesses inside the interrupt routine,
and this means the interrupt takes too long. I have a patch moving the
PIO accesses outside the interrupt routine in order to reduce the time
spent in there. It needs a bit more work, though, before I can make it
available for testing.
Regards,
Hans
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