<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 11, 2019 at 4:52 PM John Pilkington <<a href="mailto:johnpilk222@gmail.com">johnpilk222@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">On 11/02/2019 20:56, Mark Brown wrote:<br>
> Hey, sorry for the delay in responding. I booted my fc29 front end to <br>
> kernel 4.20.6-200 and hd playback was still severely choppy. I verified <br>
> that mythfrontend is indeed using vaapi (m > playback > playback data), <br>
> but playback still suffers. Changed vid scan to progressive as you <br>
> suggested, and it improved playback some, but still to choppy to live <br>
> with. Rebooted fc 29 front end to kernel 4.18.16-300, and all is well <br>
> again, all playback is smooth and works fine. For me the problem began <br>
> late in fc28 when the first kernel 4.19 came on the scene. I upgraded <br>
> the front end to fc29, but that again only works great when its using <br>
> the 4.18 series kernel. Id be interested in what you see if you put the <br>
> 4.18 kernel on your fresh fc29 laptop and see if your playback is <br>
> improved...<br>
> <br>
> Thanks,<br>
> -M<br>
<br>
I tried google with 'vaapi kernel 4.20 bugzilla' and first hit was<br>
<br>
<a href="https://bugzilla.kernel.org/show_bug.cgi?id=109051" rel="noreferrer" target="_blank">https://bugzilla.kernel.org/show_bug.cgi?id=109051</a><br>
<br>
which appears to have been festering since 2005 and is now at comment <br>
987. Many comments are long. Baytrail, probably not the N2380...<br>
<br>
John P<br>________________<br></blockquote><div> </div><div>I tried booting the frontend box to kernel 5.0.3-200, and updated to mythtv 30.0-3 today and still see very choppy HD playback. Seems like every kernel version greater than 4.18.16-300 and vaapi has had this problem, at least for me. 4.18.16-300 and vaapi still works great tho... </div><div>Thx, Mark</div></div></div>