[mythtv-users] Hard frontend crash with vaapi on Ubuntu 20.04 and Mythtv 31

[James Linder]

> On 1 Jun 2021, at 3:38 pm, OpenMedia Support <support at openmedia.co.nz> wrote:
> 
> I'm running an Intel N3150 based NUC as a dedicated frontend for MythTV
> and it keep getting hard crashes during video playback with VAAPI. Id
> appreciate some guidance on how to best debug the problem.
> 
> Hardware - Gigabyte Brix Intel N3150 / 4GB Ram / 120GB SSD
> 
> OS - Ubuntu 20.04 LTS - regularly patched
> 
> MythTV Backend - on different hardware with DVB-T and DVB-S cards
> 
> MythTV Frontend - Lastest version from the PPA -
> http://ppa.launchpad.net/mythbuntu/31/ubuntu
> 
> Video playback currently uses a custom VAAPI profile, but the out of the
> box VAAPI profile also has issues. It appears to occur when playing H.264
> based content. Our DVB-T FTA service is H.264 for both HD and SD material.
> It can occur when we're simply watching a show, and the video / audio
> freezes and I need to hard-reset the Brix hardware.
> 
> I've configured for
> - max_cpus = 3
> - deinterlacer - low:shader:driver
> - decoder - vaapi
> - videorender - opengl-hw
> - skiploop - 0
> 
> I'll try and reproduce with "-v playback" enabled but at present there is
> nothing obvious in the frontend or system logs when the crash occurs.
> 
> I'd really appreciate it if anyone else seen similar issues and could
> provide guidance.

I use various i3 which *never* crash. I use self compiled myth which I update (via git) regularly.
How do you use VAAPI?  How do you do that?

‘buntu is I guess the easiest (and it is easy) to config for building. (follow the wiki)

James