[mythtv] [mythtv-commits] Ticket #3031: Recording will not commence until a PMT is set.

John P Poet jppoet at gmail.com
Tue Apr 17 05:11:22 UTC 2007

On 4/16/07, Daniel Kristjansson <danielk at cuymedia.net> wrote:
> On Mon, 2007-04-16 at 19:01 -0600, John P Poet wrote:
> > On 4/16/07, MythTV <mythtv at cvs.mythtv.org> wrote:
> > > #3031: Recording will not commence until a PMT is set.
> > >  Could someone try this patch? It reverts out the changes in #2944. I don't
> > >  think these changes were really the cause of the underlying problem, but
> > >  instead triggered it by changing the timing of the tune and triggering a
> > >  race condition more frequently than it was previously triggered. If this
> > >  reversion patch works, I'll make a series of patches that should help
> > >  isolate the problem by gradually reintroducing the changes in #2944. When
> > >  I figure out what the real problem is, I'll fix it..
> > I can try this in a couple of hours.
> > Does it matter what rev I apply it to?  I would be tempted to go with
> > r12903 since that would avoid a PROTO bump.
> I don't know if 12903 would work, I haven't been following
> MythTV development very closely in the last few weeks. I think
> after we verify that this patch removes the race problem in
> a recent trunk, then the incremental patches would be fine
> against an older rev. But I really need a clean 'this works'
> version of the SVN head to bisect against the broken actual
> SVN head in order to narrow down on the problem quickly.
> -- Daniel

I grabbed svn r13265 twice.  First copy I compiled with no other
patches applied.  Second copy I compiled with only 3031-dbg-2.patch

I installed the non-patched version first.  It took 19 attempts to get
it to fail.

I installed the patched version and attempted to make it fail 115
times.  It did not.

I re-installed the non-patched version.  This time it only took 6
attempts to get it to fail.

I am attaching two logs.  One is the result of the failure.  The other
is an example from one of the patched attempts.

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