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[SOLVED] Choppy sound after upgrade
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Solved: Choppy sound after upgrade
2nd Oct, 2018, 03:47 AM
Post: #16
Nachteule Offline
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RE: Choppy sound after upgrade
(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 Sad

- 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)
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2nd Oct, 2018, 05:39 AM
Post: #17
Dzintars Bergs
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RE: Choppy sound after upgrade
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.
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2nd Oct, 2018, 05:50 AM
Post: #18
Nachteule Offline
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RE: Choppy sound after upgrade
OMX/MMAL you can find in Player setting, acceleration
Sound pass through: System setting, Audio
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2nd Oct, 2018, 05:52 AM
Post: #19
Dzintars Bergs
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RE: Choppy sound after upgrade
(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. Smile
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2nd Oct, 2018, 05:53 AM
Post: #20
Nachteule Offline
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RE: Choppy sound after upgrade
Ok, what happens if you enable OMX, disable MMAL, enable pass through?

Does stuttering happens always or randomly?
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2nd Oct, 2018, 05:57 AM
Post: #21
Dzintars Bergs
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RE: Choppy sound after upgrade
It happens randomly, I haven't noticed any patterns.

I will try to change settings and see what happens.
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2nd Oct, 2018, 05:58 AM
Post: #22
Nachteule Offline
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RE: Choppy sound after upgrade
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
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4th Oct, 2018, 04:22 AM
Post: #23
Dzintars Bergs
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RE: Choppy sound after upgrade
Thanks for hints. I don't have any audio gliteches with OMX enabled, MMAL disabled and pass through enabled. Smile
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4th Oct, 2018, 10:50 AM
Post: #24
Nachteule Offline
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RE: Choppy sound after upgrade
(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. Smile

Ok, sound good. So we come a bit closer to the problem Dodgy
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5th Oct, 2018, 04:27 AM
Post: #25
Bastlwastl Offline
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RE: Choppy sound after upgrade
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.
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10th Oct, 2018, 08:11 AM
Post: #26
Nachteule Offline
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RE: Choppy sound after upgrade
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.
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11th Oct, 2018, 11:22 PM
Post: #27
Bastlwastl Offline
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RE: Choppy sound after upgrade
After updating the kernel to 4.14.74+, the problem has gone.
Enable MMAL, all fine....
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12th Oct, 2018, 03:08 AM
Post: #28
Nachteule Offline
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RE: Choppy sound after upgrade
@Bastlwastl

Thanks for reporting. I think, this PR, merged into 4.14.74+, did the trick Smile
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7th Nov, 2018, 03:29 AM
Post: #29
Chiron Offline
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RE: Choppy sound after upgrade
I confirm, the problem is gone. :-)
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