<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 2, 2020 at 7:15 AM John <<a href="mailto:jksjdevelop@gmail.com">jksjdevelop@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div>On 02/03/2020 14:41, Allen Edwards
wrote:<br>
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<div dir="ltr" class="gmail_attr">On Mon, Mar 2, 2020 at
2:19 AM John <<a href="mailto:jksjdevelop@gmail.com" target="_blank">jksjdevelop@gmail.com</a>>
wrote:<br>
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<div>On 02/03/2020 01:48, Allen Edwards wrote:<br>
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<div dir="ltr">I continue my search for why my
mythfrontend is locking up. As I have said, the
real bother is that it basically requires a
restart of the computer to clear up the problem as
I have discussed previously.
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<div>The error I am seeing in the log is this </div>
<div><b>Decoder timed out waiting for free video
buffers</b><br>
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<div>What I have found is that several others
have had this problem and have isolated it to
VDPAU with an interlaced source. We had a lock
up again last night and sure enough the source
was 1080i and the output is 1080p.</div>
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<div>There does not seem to be a solution online
that I can find.</div>
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<div>Here is one thread <a href="https://forum.mythtv.org/viewtopic.php?t=2735" target="_blank">https://forum.mythtv.org/viewtopic.php?t=2735</a></div>
<div>Here is another <a href="https://devtalk.nvidia.com/default/topic/1037255/linux/mythtv-errors-lockups-with-vdpau-and-340-or-390-drivers-/" target="_blank">https://devtalk.nvidia.com/default/topic/1037255/linux/mythtv-errors-lockups-with-vdpau-and-340-or-390-drivers-/</a></div>
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<div>My question is, am I using the right driver
and video configuration? Next question, what
should I use if VDPAU is unacceptable?</div>
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<div>I am running <span>Mythbuntu</span> </div>
<div>Ubuntu <span>16.04</span>.1 LTS</div>
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<div>MythTV Version : v0.28.2-6-g9031599<br>
</div>
<div>MythTV Branch : fixes/0.28<br>
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<div>AMD Athlon(tm) 64 X2 Dual Core Processor
5400+<br>
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<div>6G memory</div>
<div>GeForce GTX 750Ti</div>
<div>nvidia 390 driver</div>
<div>VDPAU High Quality</div>
<div><br>
</div>
<div>Allen</div>
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<p>I have found that using High Quality software
decoding to be more reliable and tolerates faults in
the broadcast stream. The cpu load is only moderate
- try it.<br>
</p>
<p>By the way this issue is still present in V31 so
upgrading will not help.</p>
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<div>Thanks so much for the confirmation of the issue. I
have been wondering about using software but wasn't sure
my CPU could handle it. What specific settings do you
recommend?</div>
<div><br>
</div>
<div>Allen </div>
</div>
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<p>I am on ver 31 using Opengl High Quality and cant remember the
exact settings for V28 but I think there was a High Quality
choice in Setup>Video>Playback>Current Video Playback
Profile</p>
<p>You should get ffmpeg decoding and if I remember correctly
vdpau double de-interlacer.</p>
<p>That config never failed for me on a combined Intel Haswell
front and backend with Nvidia graphics.</p>
<p>Note i still get judder with software decoding if there are
background tasks running so avoid that.</p></div></div></blockquote><div><br></div><div>I tried "High Quality" and so far it looks good picture quality wise.</div><div><br></div><div>I took a look at the CPU load using top and I find that strange.</div><div>Mythfrontend with VDPAU runs about 9% and with High Quality about 29%. That seems fine.</div><div>Xorg is what I find strange. With VDPAU it runs about 2% and with High Quality it runs all over the place. I have seen as low as 6% and as high as 96% </div><div><br></div><div>I guess this is OK as long as nothing is pinned at 100% and I see that mythcomflag is able to get in there and it only uses left overs so I guess all is good.</div><div><br></div><div>If there was just an easy way to restore operation after a lock up like there was when I was running Mythbuntu 8 we could live with the occasional lock-ups which happen about once a month. I modified several things so that CTRL-ALT-BS will restart X but it does not work when mythfrontend is locked up. Basically, only "shutdown now -r" works in that case.</div><div><br></div><div>Thanks for the help. We will try High Quality and see how it goes.</div><div><br></div><div>Allen</div></div></div>