[mythtv-users] "VideoOutputXv Error: Child <x> was already marked as available" error [was: via epia XvMC at 100% blocking lirc]

Ronald Pijnacker pijnacker at dse.nl
Tue Jan 1 15:35:10 UTC 2008

Hi everybody,

and a happy new year to all.

> >> After running 0.19 on my via eipa for a couple of years, I decided to update
> >> to ubuntu with the mythbuntu package (7.10, mythtv 0.20-fixes).
> >> Everything is running rather well, except for two problems:
> >>
> >> 1. I am using viaXvMC (as before) but the CPU is up-to 100% on SD recordings.
> >>    On the same recording, xine is doing 35% with xvmc. This leads me to
> >>    conclude that xvmc itself is setup correctly.
> >>
> >>    In the log file I get a lot of messages like:
> >>       VideoOutputXv Error: Child      <x>     was already marked as available.
> >>    I've googled for this message and more people have reported the problem,
> >>    but I was not able to find any cause or solution.
> > 
> > I recompiled the latest release-0-20-fixes taking only xvmc and xvmc-vld,
> > linking directly against viaXvMC to see if that might help.
> > No luck, however, I am still getting the 
> > 
> >   VideoOutputXv Error: Child      <x>     was already marked as available.
> > 
> > messages. Does anybody happen to know what these mean?
> I can't help on the error message. I see those too.
> As to xvmc using 100%, there *is* something wrong in the setup.
> I presume that you have (going from memory) libviaxvmc in 
> /etc/X11/XvMCConfig (since xine works).

I resurrected the old install to check which messages that gives. Running 
mythtv 0.19, I do not see the error messages.
Running mythtv 0.20 (on exacly the same setup, with only mythtv changed)
I do get the messages. Apparently something changed from 0.19 to 0.20 that
triggers these.

However, even with the messages, I do not seem to get the problems that I
do get with ubuntu/mythbuntu. This does indeed seem to indicate a problem
with the XvMC setup itself...
> Down about three pages in Utilities/Setup->Setup->TV Settings->Playback 
> there are settings for which decoder is used. Your best bet is to check 
> in that area of setup. (I run SVN so I am not sure how 20-fixes is set 
> up for what is no which page).

I have set those to VIA XvMC (which I believe to be correct).


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