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<p><font size="-1"><font face="Verdana">I have experienced a lockup<font
face="Verdana"> in 0.28<font face="Verdana"> which seems to
be happening even more freq<font face="Verdana">uently now
that I've upgraded to 29.1 (self-compiled). I have three
types of tuner:<font face="Verdana"> <font
face="Verdana">an</font> HD-PVR, a HDHomerun (<font
face="Verdana">original</font>, dual-tuner), and a
Blackmagic DeckLink Mini card that is accessed as an
external recorder. This uses a modified version of
mythfilerecorder<font face="Verdana"> to run ffmpeg,
as documented here:</font></font></font></font></font></font></font></p>
<p><font size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font face="Verdana"><a
class="moz-txt-link-freetext"
href="https://code.mythtv.org/trac/ticket/13251">
https://code.mythtv.org/trac/ticket/13251</a><br>
</font></font></font></font></font></font></p>
<p><font size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font face="Verdana"><font
face="Verdana">I believe <font face="Verdana">the
lockup <font face="Verdana">begins to </font>happen
when<font face="Verdana"> a recording comple<font
face="Verdana">tes on the DeckLink.</font></font></font></font>
For some reason, the </font></font></font></font></font></font><font
size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font face="Verdana"><font
size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font
face="Verdana">mythfilerecorder</font></font></font></font></font></font>
process <font face="Verdana">is not always told to
terminate; in some cases the backend seems to just
reuse this process to record subsequent programs.
But on other occasions, the next time an attempt is
made to use that <font face="Verdana">capture card</font>
th<font face="Verdana">ere is a lockup where the
backend still outputs occasional messages to the
log but its CPU us<font face="Verdana">age is
pegged at 100%, </font>it <font face="Verdana">no
longer respon<font face="Verdana">ds to any
requests from frontends, and it has to be
terminated with<font face="Verdana"> SIGKILL</font>.</font></font></font></font><br>
</font></font></font></font></font></font></p>
<p><font size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font face="Verdana"><font
face="Verdana">A <font face="Verdana">thread <font
face="Verdana">backtrace can be found here:</font><br>
</font></font></font></font></font></font></font></font></p>
<a class="moz-txt-link-freetext" href="https://pastebin.com/yhSHXuq5">https://pastebin.com/yhSHXuq5</a><br>
<br>
<font size="-1"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana"><font face="Verdana"><font
face="Verdana"><font face="Verdana">Any suggest<font
face="Verdana">ions about what to try?</font></font></font></font></font></font></font></font></font><br>
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