[mythtv-users] [mythtv] MythTV Raspberry Pi2 frontend testers

[Lawrence Rust]

On Wed, 2015-11-18 at 22:53 -0800, Tom Harris wrote:
> I installed Wheezy on a spare uSD card to give it a try, but I didn’t get
> any video working.
> 
> I installed the mysql packages, and mythfrontend ran fine, but I didn’t get
> video playback to work.  Initially when I tried to play a video it spewed
> tons of audio error messages (*AudioOutput Error: AOOSS: Error opening
> audio device (): eno: No such file or directory (2)*) then crashed.
> 
> I went into the setup wizard, and it detected an ALSA device which
> generated test audio.  But, when I played a video, it paused for a few
> seconds then crashed with:
> 
> X Error of failed request:  BadWindow (invalid Window parameter)
>   Major opcode of failed request:  12 (X_ConfigureWindow)
>   Resource id in failed request:  0x3
>   Serial number of failed request:  14
>   Current serial number in output stream:  15
> QWaitCondition: cv destroy failure: Device or resource busy
> QWaitCondition: mutex destroy failure: Device or resource busy

It is generally best to dispense with X and run fullscreen EGLFS.  This
is achieved by prepending QT_QPA_EGLFS_FORCE888=1 QT_QPA_PLATFORM=eglfs
to the mythfrontend command.

You won't be able to use h/w accelerated playback with Xv.

> Also,when I go into setup and try to view/change video playback settings, I
> only get a black screen until I hit escape..
Again it's a Qt5.4/Xv interaction that's best avoided.  Hopefully I can
iron out Xv issues in time (maybe a later Qt plays better).

-- Lawrence Rust