Odd sort of high pitched distortion with sound playback in new ubuntu install

[Steven]

Actually no, the video I'd had up just didn't have enough on the high 
end to notice the distortion. But clicking on the icon for the script I 
made to reload pulse audio does seem to have fixed it again. So yeah, 
turns out making a .desktop file is pretty straight forward. I just made 
a text file with the following:

[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Terminal=false
Exec=bash /home/steven/.scripts/RestartPulseAudio.sh
Icon=/home/steven/.scripts/High-contrast-audio-volume-high.svg
Name=Restart Pulse Audio

Downloaded a speaker icon to use for it and put it in the same directory 
as the RestartPulseAudio.sh file and that was that.

I suppose I should just set that script to automatically run at startup.



On 7/17/21 6:58 PM, Steven via PLUG-discuss wrote:
> Just in case anyone runs into something similar in the future I'm not 
> entirely certain what fixed this as I broke a troubleshooting rule and 
> did more than one thing before testing, but I
> 1) edited /etc/pulse/default.pa to add the lines
> load-module module-echo-cancel use_master_format=1 aec_method=webrtc 
> aec_args="analog_gain_control=0 digital_gain_control=1" 
> source_name=echoCancel_source sink_name=echoCancel_sink
> set-default-source echoCancel_source
> set-default-sink echoCancel_sink
> 2) issued the command, "systemctl --user restart pulseaudio.service"
>
> Actually, it might be the second. I just tried commenting out those 
> echo filter lines and reloaded pulse audio again and I'm still not 
> getting that weird echo or whatever it was on the high end.
>
> That said, this only seems to persist until I restart.
>
> Actually, I just did a restart and now I'm getting clean audio without 
> needing to restart the pulse audio service...
>
> Yeah. Well. Apparently the answer if you have this issue is to poke 
> various files without success, then add the echo filter to the pulse 
> audio default.pa file, reload the pulse audio service, comment out 
> your changes, and then restart. :)  Slightly more complicated than, 
> "Have you tried turning it off and then on again?" But I'll take it.
>
> I was going to comment that I'd worked out how to create a launcher 
> that would run a shell script that issued the pulse audio service 
> restart command, but since it looks like I don't need that now I guess 
> I won't. :)
>
>
> On 7/11/21 5:14 PM, Steven via PLUG-discuss wrote:
>> So I recently bit the bullet and replaced my 2013 laptop with a new 
>> one (a Dell Inspiron 15 3505 with a Ryzen 3700U). In nearly every way 
>> it has been a massive improvement over the old laptop (four cpu 
>> cores, 16 GB of ram, and solid state drives meant installing the OS 
>> and booting are faster than I have been used to). That said, 
>> initially I'd installed the latest Ubuntu LTS (20.04) only to 
>> discover that neither the AMD nor Cirrus Logic sound were recognized. 
>> Going into the sound settings the output device was set to "Dummy 
>> Output." I did some searching, found this was apparently a not 
>> uncommon occurrence even if I'd not heard of it before, but none of 
>> the solutions that were suggested worked.
>>
>> So, I updated the install to 21.04 at which point Ubuntu was willing 
>> to recognize that there was an HD Audio Controller present and I now 
>> get sound. Only there's a slight distortion in it that I'm not quite 
>> sure how to describe. A sort of ringing/crackle/echo on the high 
>> pitched sounds. Lowering the volume seems to help slightly but it's 
>> still present, and this is whether I'm using the built in speakers or 
>> headphones. I'm charging up a pair of bluetooth headphones I have to 
>> see if it's present there or if that dodges around the issue. Anyway, 
>> does anyone have suggestions on what might be wrong? I've done more 
>> searches but it seems the pages I'm finding are nearly all people 
>> talking about not getting any sound. I'm inclined to think it might 
>> be a driver issue seeing as how I'm not noticing the same distortion 
>> if I boot into Windows.
>>
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