[SOLVED] Choppy sound after upgrade

[Nachteule]

(2nd Oct, 2018 03:38 AM)Dzintars Bergs Wrote:  I think, I have same audio glitches on Pi2 after recent upgrade. This happens while playing 720p mkv videos. Any suggestions how to resolve it?

No, unfortunately no idea

- Which kernel ?
- OMX/MMAL Player ?
- Sound pass through?

I'm running 4.14.71 on my old Pi1, and having absolutely no issue playing 720p mkv's over WLAN network (SAMBA share)
(OMX, pass through)

[Dzintars Bergs]

I'm getting this in kodi log, when sound stutters:

Terminal

22:37:59.437 88320.203125 T:1882190592 ERROR: COMXCoreComponent::WaitForOutputDone OMX.broadcom.audio_mixer wait event timeout
22:37:59.438 88320.210938 T:1882190592 ERROR: CActiveAEResamplePi::Resample m_omx_mixer.WaitForOutputDone result(0x80001011)
22:37:59.825 88320.593750 T:1873801984 NOTICE: CAESinkPi:AddPackets Underrun (delay:0.00 frames:2400)
22:38:00.434 88321.203125 T:1706009344 NOTICE: service.libraryautoupdate-1.0.2 : Player is running, wait until finished

Kernel version - 4.14.72+
Sound pass through - disabled
MMAL player.

I haven't changed any audio settings, except Volume control steps.

[Nachteule]

OMX/MMAL you can find in Player setting, acceleration
Sound pass through: System setting, Audio

[Dzintars Bergs]

(2nd Oct, 2018 05:50 AM)Nachteule Wrote:  OMX/MMAL you can find in Player setting, acceleration
Sound pass through: System setting, Audio

I edited info in previous post.

[Nachteule]

Ok, what happens if you enable OMX, disable MMAL, enable pass through?

Does stuttering happens always or randomly?

[Dzintars Bergs]

It happens randomly, I haven't noticed any patterns.

I will try to change settings and see what happens.

[Nachteule]

Btw, I'm using MMAL only on Pi3(B+) because of not having MPEG2 license, but audio pass through is always enabled

And never noticed any stuttering there

[Dzintars Bergs]

Thanks for hints. I don't have any audio gliteches with OMX enabled, MMAL disabled and pass through enabled.

[Nachteule]

(4th Oct, 2018 04:22 AM)Dzintars Bergs Wrote:  Thanks for hints. I don't have any audio gliteches with OMX enabled, MMAL disabled and pass through enabled.

Ok, sound good. So we come a bit closer to the problem

[Bastlwastl]

I also have the random choppyy problem watching mkv on a RPI2 since a few kernel versions.
I can confirm MMAL disable and OMX enable solve the problem.

The PI is connected with HDMI through a Onkyo AV-Receiver.

[Nachteule]

Hmmm, tested yesterday with a Pi3, latest kernel (4.14.74+), no sd-card (NFSROOT), no OMX, no sound pass trough, active VNC connection, Kodi debug logs enabled, files on SAMBA share:

Absolutely no sound issue while playing 720p mkv, AC3 5.1

Will see if I can find 1080p REMUX video with DTS, to see how this goes.

[Bastlwastl]

After updating the kernel to 4.14.74+, the problem has gone.
Enable MMAL, all fine....

[Nachteule]

@Bastlwastl

Thanks for reporting. I think, this PR, merged into 4.14.74+, did the trick

[Chiron]

I confirm, the problem is gone. :-)