[ubuntu-studio-users] Audio pop/glitch/crackle issues

mario buoninfante mario.buoninfante at gmail.com
Tue Dec 20 12:26:15 UTC 2022 

Here I am again with another update :)

The crackling audio with Jack is still a thing, the only news is that I 
tried killing/stopping both pulseaudio and pipewire while using jack, 
but that doesn't help, the issue persists.

I feel I might be getting closer to the source, but I don't really know 
at this point.


Cheers,
Mario

On 15/12/2022 18:24, mario buoninfante wrote:
>
> New update.
>
> Got back to Xubuntu 22.04 and installed Ubuntu Studio (via the installer).
> I'm on kernel 5.15.0-56-lowlatency.
> I'm getting the crackle issue when using Jack (setup and started via 
> Studio Controls).
> When using Alsa it's all fine. I tried streaming audio/video (YouTube) 
> and using Ardour 7.2.
> I did change daemon.conf in /etc/pulse like suggested in the kernel 
> bug ticket.
>
> Cheers,
> Mario
>
>
>
> On 13/12/2022 12:30, mario buoninfante wrote:
>>
>> Hi Roy,
>>
>> Unfortunately that didn't work for me.
>> I managed to get rid of the audio crackle thing downgrading the 
>> kernel (there's a known bug introduced with 5.13.xxxx - see my 
>> previous post here).
>> I still get too many x-runs though, but I started thinking that it 
>> might have to do with my AMD FirePro W2100 GPU.
>>
>> Just a guess atm.
>>
>> While trying to get to the bottom of my initial issue, I also 
>> installed the AMD drivers for my GPU and that improved the audio 
>> performance massively. No glitches/distortions even with low buffer 
>> sizes, but my video was really sluggish.
>> On the internet I didn't manage to find any report with mine exact 
>> conditions, but I found few posts here and there of people having 
>> "audio issues" introduced by (the lack of?) AMD drivers.
>>
>> I'll keep the list updated in case I get anywhere with this.
>>
>> Cheers,
>> Mario
>>
>>
>>
>> On 11/12/2022 14:52, Roy Damen wrote:
>>> Hello Mario, i wonder if you could just do the UbuntuStudio-controls 
>>> config again. This fixed issues on my machine,
>>>
>>> Good luck,
>>>
>>> Roy Damen
>>>
>>>
>>> Op za 10 dec. 2022 om 00:33 schreef mario buoninfante 
>>> <mario.buoninfante at gmail.com>:
>>>
>>>     I think I might have found the issue
>>>
>>>     https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.13/+bug/1966066
>>>
>>>
>>>     On 04/12/2022 12:11, mario buoninfante wrote:
>>>>
>>>>     Hi,
>>>>
>>>>     Here's a bit more info and some updates.
>>>>     I'm running Xubuntu 22.04.1 with Ubuntu Studio (everything
>>>>     installed).
>>>>     I'm using a Focusrite Clarett 8pre USB as audio device running
>>>>     at 96kHz sample rate, 256 sample buffer size and 3 JACK period.
>>>>     I'm fully up-to-date and the kernel is Linux
>>>>     5.15.0-56-lowlatency x86_64 (I think the kernel got updated in
>>>>     the last round of updates).
>>>>
>>>>     In the last 2 days I unsuccessfully tried to do the following
>>>>     (in non-particular order):
>>>>
>>>>      *
>>>>
>>>>         uninstall pipewire - too many dependencies, so I gave up on
>>>>         that
>>>>
>>>>      *
>>>>
>>>>         the combo
>>>>
>>>>          o
>>>>
>>>>             systemctl --user stop pipewire.socket && systemctl
>>>>             --user stop pipewire.service
>>>>
>>>>          o
>>>>
>>>>             systemctl --user mask pipewire.service
>>>>
>>>>      *
>>>>
>>>>         re-install pulse audio
>>>>
>>>>       * in /etc/pulse/default.pa <http://default.pa> I added
>>>>         "tsched=0" to the line containing "load-module
>>>>         module-udev-detect"
>>>>      *
>>>>
>>>>         edit the files in /etc/pipewire/media-session.d adding:
>>>>
>>>>          o
>>>>
>>>>             session.suspend-timeout-seconds = 0
>>>>
>>>>      *
>>>>
>>>>         install pipewire-pulse
>>>>
>>>>      *
>>>>
>>>>         replace pipewire-session-manager with wireplumber
>>>>
>>>>      *
>>>>
>>>>         re-install pipewire-session-manager and remove wireplumber
>>>>         (this is actually the last thing I tried, so now I don't
>>>>         have wireplumber anymore)
>>>>
>>>>
>>>>     Nothing helped.
>>>>     Then, after using:
>>>>
>>>>      *
>>>>
>>>>         systemctl --user status pipewire pipewire-session-manager
>>>>
>>>>     I realised I was getting 2 errors:
>>>>
>>>>      *
>>>>
>>>>         mod.rt: could not set nice-level to -11: Permission denied
>>>>
>>>>      *
>>>>
>>>>         spa.v4l2: '/dev/video0' VIDIOC_QUERYCTRL: Input/output error
>>>>
>>>>     I fixed the former adding
>>>>
>>>>         |@audio - nice -20|
>>>>
>>>>     to /etc/security/limits.d/audio.conf
>>>>
>>>>     I didn't manage to address the latter though.
>>>>
>>>>
>>>>     The situation seems to have improved, not so much with streamed
>>>>     audio/video, but with audio only (eg audacious) - it might be
>>>>     too early to assess this though, since it was a late night move.
>>>>
>>>>     I went from "totally unusable - glitches, pops and crackles 80%
>>>>     of the played audio", to "getting pops and crackles sporadically".
>>>>     Still makes my system unusable, since I mainly
>>>>     record/mix/produce music on my computer, but all improvements
>>>>     are welcome!
>>>>
>>>>     With audio/video from the internet though (mainly YouTube via
>>>>     Firefox), I'm still getting terrible performance out of this.
>>>>
>>>>
>>>>     Cheers,
>>>>     Mario
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>     On 02/12/2022 21:09, mario buoninfante wrote:
>>>>>     Hi,
>>>>>
>>>>>     Recently I started having issues with the audio performance of
>>>>>     my system (Ubuntu 22.04.1 LTS).
>>>>>     It seemed to have started after my last update.
>>>>>     Simply running "top" I noticed I have "pipewire" running and I
>>>>>     was wondering if that could be the problem.
>>>>>     I don't know if that has always been installed as I never
>>>>>     checked before today, but I found online that several people
>>>>>     are having similar issues both on Ubuntu and Fedora.
>>>>>
>>>>>     Any feedback/recommendation is welcome :)
>>>>>
>>>>>     Cheers,
>>>>>     Mario
>>>>>
>>>>>
>>>>>
>>>>     -- 
>>>>     ---
>>>>     musician, QA engineer, mental health first aider MHFA England
>>>>
>>>>     https://isoneph.bandcamp.com/
>>>>     https://vdof.bandcamp.com/
>>>>     http://mbuoninfante.tumblr.com
>>>>     https://vimeo.com/creativecodingsalerno
>>>>     https://github.com/mariobuoninfante
>>>     -- 
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>>>
>>>
-- 
musician, QA engineer, mental health first aider MHFA England

https://isoneph.bandcamp.com/
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