[mythtv-users] HD playback problem w/ kernel greater than 4.18.16-300.fc29

[Mark Brown]

On Mon, Feb 11, 2019 at 4:52 PM John Pilkington <johnpilk222 at gmail.com>
wrote:

> On 11/02/2019 20:56, Mark Brown wrote:
> > Hey, sorry for the delay in responding.  I booted my fc29 front end to
> > kernel 4.20.6-200 and hd playback was still severely choppy.  I verified
> > that mythfrontend is indeed using vaapi (m > playback > playback data),
> > but playback still suffers.  Changed vid scan to progressive as you
> > suggested, and it improved playback some, but still to choppy to live
> > with.  Rebooted fc 29 front end to kernel 4.18.16-300, and all is well
> > again, all playback is smooth and works fine.  For me the problem began
> > late in fc28 when the first kernel 4.19 came on the scene.  I upgraded
> > the front end to fc29, but that again only works great when its using
> > the 4.18 series kernel.  Id be interested in what you see if you put the
> > 4.18 kernel on your fresh fc29 laptop and see if your playback is
> > improved...
> >
> > Thanks,
> > -M
>
> I tried google with 'vaapi kernel 4.20 bugzilla' and first hit was
>
>   https://bugzilla.kernel.org/show_bug.cgi?id=109051
>
> which appears to have been festering since 2005 and is now at comment
> 987.  Many comments are long.  Baytrail, probably not the N2380...
>
> John P
> ________________
>

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...
Thx, Mark
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