PulseAudio: Animation playback in viewport corrupts sound output on linux #88089
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Reference: blender/blender#88089
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System Information
Operating system: manjaro-kde-21.0.3-210428-linux510 switched to linux512 kernel
Graphics card: rx6800
Blender Version
Broken: 2.93
Worked: (newest version of Blender that worked as expected)
Short description of error
hitting space in blender viewport corrupts sound output as long as blender is open.
Exact steps for others to reproduce the error
play some music in the background and hit space in the viewport to play animation, you should notice noise that is correlated with volume of the music. it stops upon closing blender.
Added subscriber: @leonardos
UPDATE: After switching Audio Device to none under System>Sound my issue went away, but still it should not have happened in first place.
Added subscriber: @lichtwerk
Changed status from 'Needs Triage' to: 'Needs User Info'
Is this about Jack?
Is this also happening with PulseAudio for example?
i dont know who jack is but yes, PulseAudio was default i switched to none and issue fixed
Changed status from 'Needs User Info' to: 'Needs Triage'
Jack is another soundsystem. If blender uses jack, then I can sort of reproduce other sound stopping ( but I think this is normal, one would probably have to wire connections up with qjackctl or something ).
PulseAudio is fine on my side though
yes my problem was with plusaudio
Added subscriber: @HDMaster84
I do experience the same issue on
System Information
Operating system: Linux-5.8.0-2-amd64-x86_64-with-glibc2.31 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66
Blender Version
Broken: version: 3.0.0 Alpha,
It's also for me PulseAudio specific so I switched to OpenAL in the preferences as a work around. JACK does not work (suspect it isn't installed properly).
My installed PulseAudio version is 13.0-5 (from apt output)
Added subscriber: @ankitm
related #87584 (weird audio noise when starting playback in blender) #86923 (Bledner-2.93 Pulseaudio crack in start playback)
Added subscriber: @neXyon
Unfortunately, I and a pulseaudio developer I talked to cannot reproduce the issue, but there are some things we can try:
Can you please try if the issue persists if you choose a different (bigger) mixing buffer size in the preferences?
If you can it would be nice to get a verbose log of pulseaudio about what happens between you starting blender and the start of the problem. You can increase the verbosity of pulseaudio's loggin with the command
pacmd set-log-level 4if you know where to get the log (on my system it's in the journal). If not it might be easier to follow one of these guides to get a log:https://www.freedesktop.org/wiki/Software/PulseAudio/BugReports/#gettingverboseserverlogsfrompulseaudio
https://wiki.ubuntu.com/PulseAudio/Log
@HDMaster84 which distribution and version are you using? Ubuntu?
Changed status from 'Needs Triage' to: 'Needs User Info'
Animation playback in viewport corrupts sound output on linuxto PulseAudio: Animation playback in viewport corrupts sound output on linux@neXyon I am using Debian current testing.
Here is my
pacmd --version:here is a very verbose log:
{F10158285}
I think the stuff around line 2790 looks interesting.
Thank you, I created an issue on the pulseuaudio issue tracker with your log.
Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'
@neXyon : I assume we consider this "Confirmed"? or has this been resolved along with other commits lately?
Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'
Sure! Unfortunately, I didn't get any responses yet from the issue in the pulseaudio tracker. Here's the link: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1221
Added subscriber: @MD.FahadHassan
Hi all, After inspecting pulse log What I think pulse is facing mismatch buffer and sample rate to sync with other sources. Could be wrong.
Although forcing mixing buffer beyond 4096 samples eliminates the statics. Hope it helps. Thanks.
Also, in 2.79 default driver was OpenAL. Not sure is it beneficial to use pulse in Blender?
O/S Mint 20.1
I wonder if that is the same issue @MD.FahadHassan - Can you check if increasing the mixing buffer size helps @HDMaster84, @leonardos? Unfortunately, there's still no progress in the pulseaudio bug report...
I just committed two more fixes for pulseaudio, I'm again not sure if they help, please check out a recent build of master (3.0.0 alpha), e.g.: https://builder.blender.org/download/experimental/blender-3.0.0-alpha+master.a217e043be2d-linux.x86_64-release.tar.xz
Seems to be solved for me. Thanks. Also tried different sample rates and it worked.
I guess the fixes you are talking are
a112adf16aanda217e043beSOLVED in Blender hash
a217e043beThanks!
O/S Mint 20.1
Changed status from 'Confirmed' to: 'Resolved'
Perfect, thanks for checking!