Re: pulseaudio / alc1220 sound clicks interruptions etc

On 2025-06-03 22:44 +0200, Tomek CEDRO wrote:
>
> Thank you for the references on related issues! There is definitely
> something wrong below on the new hardware support because also all of
> the onboard USB controllers hangs occasionally, even when I was
> writing this reply before. I did add PCI-E USB controller and this one
> does not hang, music plays, etc. USB is another problem, that may come
> from the same source - timings, delays, timeouts.

You're welcome!  Have you tried booting into verbose mode and turning on sound 
debugging?  That should give you an indication.


> After exhausting sysctl changes I went to BIOS and changed PCI-E 16x
> configutation to be 8x/8x with NVME controller and problem seems gone
> for now when computer is idle - using 24-bit sound with 96kHz rate
> vchanmode=fixed, adjusted pulseaudio, rebooted, and no constant clicks
> here. There are still small hangs for short periods on visual activity
> when switching desktops launching applications etc.

Yes this is just slowing things down it's not fixing the problem the pops are 
there I'm sure I did something similar and even if I couldn't hear them on a 
sinewave listening to the output it's very clear they are still there.


> I noticed however a slowdown of visual smoothness (i.e. Blender,
> FreeCAD, KiCAD, even gzdoom) after switching from PCIe-x16 to
> PCIe-x8/x8, then got to nvidia-settings changed OpenGL Settings /
> Image Settings from Quality to High Performance and things got
> smoother but still not smooth as before. Maybe there is something
> wrong with nvidia / gpu driver causing these issues?

I also thought at one point it was the nvidia driver and it may be which would 
explain why playing video is worse but if I do it via a browser it's really bad 
playing from the commandline using say, mpv it's hardly noticable but still 
there.

It's broken in every case I tested though I have not tried a non-nvidia card as 
I don't have one.  Do you have a different card to try?


Amar.