Nyquist returned the value X

Hello folks,

İ am using Audacity for a very long time now on my Windows machine without any issues.
After installing Linux on my other machine İ get the error “Nyquist returned the value 0.250000” when trying to generate a rhythm track.
The strange thing is that it doesn’t matter if I use Ubuntu, Arch or any other distro. Currently İ’m on Pop!os 22.04.
İ also tried the flatpak version - same issue.
apt install --install-recommends audacity doesn’t help either.
İ tried audacity with the official repo version of 2.4.2 and also through the Pop!Shop with version 3.1.3.

What İ do:
-Open Audacity
-Go to Create->Rhythm Track

İ found several threads regarding this issue but nothing applies to my problem like the quotation mark bug for example.

The log only shows

'Rhythm Track' returned:
error: unbound function - |LiST|

My system and Audacity language is set to Turkish. Don’t know if that plays a role.
Any idea what to do here?

Thanks in advance

It may do. If you can read English well enough to test it in English, please try it again with the language set to English (“Preferences > Interface > Language”).

If you see the same error, try running it with the “Debug” button. That may show a more helpful error message.

Thank you very much for your reply!

After changing the language to English and ‘restarting’ Audacity, İ do not get any errors.
İt seems that the error is indeed caused by the different locale.

The debug button gives me the same as above:

error: unbound function - |LiST|

What can we do to isolate the problem?

I’ve just tried “Rhythm Track” using Audacity 3.1.3 AppImage (from: Audacity ® | Downloads) on Xubuntu 20.04, with the language set to Turkish. It runs correctly for me.

Is that all that it says in the debug window? (Debug error messages usually have a lot more information).

İ too installed the 3.1.3 version now, still having the same issue. This time the debug window gave me a lot more to work with.

error: unbound function - |LiST|
if continued: try evaluating symbol again
1> "tr"
1> #\,
1> "/app/lib"
1> "/home/anka/.audacity-data"
1> "/app/share/audacity/help/manual"
1> "/var/tmp/audacity-anka"
1> "/tmp"
1> "/home/anka/Belgeler"
1> "/home/anka"
1> error: unbound function - |LiST|
if continued: try evaluating symbol again
2> error: unbound function - |LiST|
if continued: try evaluating symbol again
3> "/home/anka/.audacity-data/Plug-Ins"
3> error: unbound function - |LiST|
if continued: try evaluating symbol again
4> "04-08-2022"
4> "19:25:59"
4> "2022-08-04"
4> "19:25:59"
4> 2022
4> 4
4> 7
4> "A\304\237ustos"
4> "Per\305\237embe"
4> 1
4> ""
4> 44100
4> 1
4> 1
4> 0
4> 0
4> 0
4> 6
4> NIL
4> 0
4> 0
4> error: unbound function - |LiST|
if continued: try evaluating symbol again
5> 1
5> error: unbound variable - |NiL|
if continued: try evaluating symbol again
6> error: unbound variable - |NiL|
if continued: try evaluating symbol again
7> error: unbound variable - |NiL|
if continued: try evaluating symbol again
8> error: unbound variable - |NiL|
if continued: try evaluating symbol again
9> 1
9> "Ses izi"
9> "wave"
9> "Waveform"
9> 1
9> T
9> 0
9> 0
9> 1
9> 0
9> 44100
9> 32
9> error: unbound function - |LiST|
if continued: try evaluating symbol again
10> error: unbound variable - |NiL|
if continued: try evaluating symbol again
11> 0
11> 0.25
11> T
11> 120
11> 4
11> 0
11> 16
11> 0
11> 0
11> 0
11> 84
11> 80
11> ROUND-UP
11> |NORMALiZE|
11> S-REST-ABS
11> |DRiP|
11> |METRONOME-TiCK|
11> COWBELL
11> |GET-METRONOME-TiCK|
11> |GET-PiNG|
11> |GET-RESONANT-NOiSE|
11> |GET-NOiSE-CLiCK|
11> |GET-DRiP|
11> GET-COWBELL
11> |CLiCK|
11> |SWiNG-ADJUST|
11> MAKEMEASURE
11> SAMPLECOUNT
11> GET-MEASURE
11> |MAKE-CLiCK-TRACK|
11> 0.5
11> error: unbound function - |SiM|
if continued: try evaluating symbol again
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x563f0e760638>
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 216 19 25 59)
12> NIL
12> error: bad argument type - NIL
Function: #<Subr-/: #0x563f0e738ca0>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x563f0e7358b0>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x563f0e760638>
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 216 19 25 59)
13> error: unbound function - |iF|
if continued: try evaluating symbol again
Function: #<Closure-ROUND-UP: #0x563f0e71b270>
Arguments:
  16
Function: #<FSubr-SETQ: #0x563f0e7396a8>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x563f0e738ca0>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x563f0e7358b0>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x563f0e760638>
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 216 19 25 59)
14> 1.4112e+06
14> error: unbound function - |FUNCTiON|
if continued: try evaluating symbol again
Function: #<Closure-SAMPLECOUNT: #0x563f0e7600e0>
Arguments:
  0
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  ADDSAMPLES
  (SAMPLECOUNT 0)
Function: #<Closure-ROUND-UP: #0x563f0e71b270>
Arguments:
  16
Function: #<FSubr-SETQ: #0x563f0e7396a8>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x563f0e738ca0>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x563f0e7358b0>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x563f0e760638>
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 216 19 25 59)
15> error: unbound function - |iF|
if continued: try evaluating symbol again
Function: #<Closure-SAMPLECOUNT: #0x563f0e7600e0>
Arguments:
  0
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  ADDSAMPLES
  (SAMPLECOUNT 0)
Function: #<Closure-ROUND-UP: #0x563f0e71b270>
Arguments:
  16
Function: #<FSubr-SETQ: #0x563f0e7396a8>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x563f0e738ca0>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x563f0e7358b0>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x563f0e760638>
Function: #<FSubr-SETF: #0x563f0e735688>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 216 19 25 59)
16> 15> 14> 13> 12> 11> 10> 9> 8> 7> 6> 5> 4> 3> 2> 1>

That’s very weird. It does not even look like a normal Nyquist error message.
Some of the symbols listed in that message (such as “SYSTEM-TIME”) aren’t even in the Rhythm Track code.


Where from?

Pop!_Shop - flatpak version.

I will set the system language to English and leave Audacity on Turkish when I get my hands on the Notebook tomorrow and test it that way.
If that works, we may be able to narrow down the problem further.

My suggestion is to try the official Audacity 3.1.3 AppImage from: https://www.audacityteam.org/download/
(works for me).

Nope, doesn’t help. Same error with the Appİmage.
Setting my system and formats language to English doesn’t help either.
The only way to get things working is changing the Audacity language.
İ mean İ couldn’t care less, İ can also use Audacity in English and German. But the goal here is to have a bug-free software.
So if there is anything İ can do to help identifying the problem, just let me know.

Could this be the issue here?

“A\304\237ustos”
4> “Per\305\237embe”

Found in the debug log.

These strings are meant to mean
Ağustos and Perşembe meaning August and Thursday in Turkish.
Maybe those Turkish letters ğ and ş cause an issue here.
I don’t know how relevant these strings are in order for the Nyquist plugins to work but on the other hand changing my system locale along with the date, currency etc didn’t fix the issue either. İ am not a big help here, my last “cout <<” was 15 years ago lol.
But İ said said before, if there is any logs, commands etc. I can provide, İ will.

Try this:

  1. Ensure that all instances of Audacity are closed.
  2. Delete the hidden folder “~/.audacity.data” (where “~/” means your home folder).
  3. Launch Audacity 3.1.3 AppImage.
  4. In the Generate menu there should be only ONE instance of “Rhythm Track…” (please say if you see more than one version of “Rhythm Track”).
  5. Launch “Generate menu > Rhythm Track”, and with the default setting, click the “Debug” button.

What should happen is:

  1. An empty “Debug” window opens (if it is not empty, please copy the entire contents and paste into your reply).
  2. On clicking the “OK” button, an audio track appears, containing 32 seconds of metronome clicks at 120 beats per minute.

Result:
Nyquist returned value 0.25

Debug window output:

error: unbound function - |LiST|
if continued: try evaluating symbol again
1> "tr"
1> #\,
1> "/tmp/.mount_audaci3VAD9D/lib"
1> "/home/anka/.audacity-data"
1> "/tmp/.mount_audaci3VAD9D/share/audacity/help/manual"
1> "/var/tmp/audacity-anka"
1> "/tmp"
1> "/home/anka/Belgeler"
1> "/home/anka"
1> error: unbound function - |LiST|
if continued: try evaluating symbol again
2> error: unbound function - |LiST|
if continued: try evaluating symbol again
3> "/home/anka/.audacity-data/Plug-Ins"
3> error: unbound function - |LiST|
if continued: try evaluating symbol again
4> "08-08-2022"
4> "11:08:36"
4> "2022-08-08"
4> "11:08:36"
4> 2022
4> 8
4> 7
4> "A\304\237ustos"
4> "Pazartesi"
4> 1
4> ""
4> 44100
4> 1
4> 1
4> 0
4> 0
4> 0
4> 6
4> NIL
4> 0
4> 0
4> error: unbound function - |LiST|
if continued: try evaluating symbol again
5> 1
5> error: unbound variable - |NiL|
if continued: try evaluating symbol again
6> error: unbound variable - |NiL|
if continued: try evaluating symbol again
7> error: unbound variable - |NiL|
if continued: try evaluating symbol again
8> error: unbound variable - |NiL|
if continued: try evaluating symbol again
9> 1
9> "Ses izi"
9> "wave"
9> "Waveform"
9> 1
9> T
9> 0
9> 0
9> 1
9> 0
9> 44100
9> 32
9> error: unbound function - |LiST|
if continued: try evaluating symbol again
10> error: unbound variable - |NiL|
if continued: try evaluating symbol again
11> 0
11> 0.25
11> T
11> 120
11> 4
11> 0
11> 16
11> 0
11> 0
11> 0
11> 84
11> 80
11> ROUND-UP
11> |NORMALiZE|
11> S-REST-ABS
11> |DRiP|
11> |METRONOME-TiCK|
11> COWBELL
11> |GET-METRONOME-TiCK|
11> |GET-PiNG|
11> |GET-RESONANT-NOiSE|
11> |GET-NOiSE-CLiCK|
11> |GET-DRiP|
11> GET-COWBELL
11> |CLiCK|
11> |SWiNG-ADJUST|
11> MAKEMEASURE
11> SAMPLECOUNT
11> GET-MEASURE
11> |MAKE-CLiCK-TRACK|
11> 0.5
11> error: unbound function - |SiM|
if continued: try evaluating symbol again
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x55e1d26ec178>
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 11 8 36)
12> NIL
12> error: bad argument type - NIL
Function: #<Subr-/: #0x55e1d24a19f8>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x55e1d24a2460>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x55e1d26ec178>
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 11 8 36)
13> error: unbound function - |iF|
if continued: try evaluating symbol again
Function: #<Closure-ROUND-UP: #0x55e1d26cd758>
Arguments:
  16
Function: #<FSubr-SETQ: #0x55e1d24a4218>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x55e1d24a19f8>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x55e1d24a2460>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x55e1d26ec178>
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 11 8 36)
14> 1.4112e+06
14> error: unbound function - |FUNCTiON|
if continued: try evaluating symbol again
Function: #<Closure-SAMPLECOUNT: #0x55e1d26ebc20>
Arguments:
  0
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  ADDSAMPLES
  (SAMPLECOUNT 0)
Function: #<Closure-ROUND-UP: #0x55e1d26cd758>
Arguments:
  16
Function: #<FSubr-SETQ: #0x55e1d24a4218>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x55e1d24a19f8>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x55e1d24a2460>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x55e1d26ec178>
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 11 8 36)
15> error: unbound function - |iF|
if continued: try evaluating symbol again
Function: #<Closure-SAMPLECOUNT: #0x55e1d26ebc20>
Arguments:
  0
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  ADDSAMPLES
  (SAMPLECOUNT 0)
Function: #<Closure-ROUND-UP: #0x55e1d26cd758>
Arguments:
  16
Function: #<FSubr-SETQ: #0x55e1d24a4218>
Arguments:
  BARS
  (ROUND-UP BARS)
Function: #<Subr-/: #0x55e1d24a19f8>
Arguments:
  NIL
  2
Function: #<FSubr-LET: #0x55e1d24a2460>
Arguments:
  ((|PREViEW| (/ (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)) (* |TiMESiG| BEATLEN))))
  (|iF| (NOT (GET (QUOTE *TRACK*) (QUOTE |ViEW|))) (SETQ BARS (|MiN| |PREViEW| BARS)))
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *MEASURE*
  (|SiM| (S-REST (* |TiMESiG| BEATLEN)) (|CLiCK| |CLiCK-TYPE| 1) (|SiMREP| (X (- |TiMESiG| 1)) (AT-ABS (* BEATLEN (+ X 1 (|SWiNG-ADJUST| X |SWiNG|))) (CUE (|CLiCK| |CLiCK-TYPE| 0)))))
Function: #<Closure-MAKEMEASURE: #0x55e1d26ec178>
Function: #<FSubr-SETF: #0x55e1d24a41b8>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 11 8 36)
16> 15> 14> 13> 12> 11> 10> 9> 8> 7> 6> 5> 4> 3> 2> 1>

Here is a screen recording of the procedure just for the records.
https://www.mediafire.com/file/mlprmmc1xvqqv6b/audacity.mp4/file

That’s very strange. It looks like your system is inserting random “|” characters around some words in the Nyquist code. I’ve no idea how that is even possible, but it seems that it is something to do with language settings / character encoding.

Which version of Linux are you using?

Which, if any, of these effects work (in Turkish):

Effect menu > Adjustable Fade (https://manual.audacityteam.org/man/adjustable_fade.html)
Effect menu > Delay (https://manual.audacityteam.org/man/delay.html)
Effect menu > High-Pass Filter (https://manual.audacityteam.org/man/high_pass_filter.html)

Generate menu > Pluck
Generate menu > Risset Drum

None of those effects or generators are working.
Here is the debug log from the Risset drum generator:

error: unbound function - |LiST|
if continued: try evaluating symbol again
1> "System"
1> #\,
1> "/tmp/.mount_audaciUR2VCN/lib"
1> "/home/anka/.audacity-data"
1> "/tmp/.mount_audaciUR2VCN/share/audacity/help/manual"
1> "/var/tmp/audacity-anka"
1> "/tmp"
1> "/home/anka/Belgeler"
1> "/home/anka"
1> error: unbound function - |LiST|
if continued: try evaluating symbol again
2> error: unbound function - |LiST|
if continued: try evaluating symbol again
3> "/home/anka/.audacity-data/Plug-Ins"
3> error: unbound function - |LiST|
if continued: try evaluating symbol again
4> "08-08-2022"
4> "14:10:09"
4> "2022-08-08"
4> "14:10:09"
4> 2022
4> 8
4> 7
4> "A\304\237ustos"
4> "Pazartesi"
4> 1
4> ""
4> 44100
4> 1
4> 1
4> 0
4> 0
4> 0
4> 6
4> NIL
4> 0
4> 0
4> error: unbound function - |LiST|
if continued: try evaluating symbol again
5> 1
5> error: unbound variable - |NiL|
if continued: try evaluating symbol again
6> error: unbound variable - |NiL|
if continued: try evaluating symbol again
7> error: unbound variable - |NiL|
if continued: try evaluating symbol again
8> error: unbound variable - |NiL|
if continued: try evaluating symbol again
9> 1
9> "Ses izi"
9> "wave"
9> "Waveform"
9> 1
9> T
9> 0
9> 0
9> 1
9> 0
9> 44100
9> 32
9> error: unbound function - |LiST|
if continued: try evaluating symbol again
10> error: unbound variable - |NiL|
if continued: try evaluating symbol again
11> 0
11> 0.25
11> T
11> 100
11> 2
11> 500
11> 400
11> 25
11> 0.8
11> |SANiTiSE|
11> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
12> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
13> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
14> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
15> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.25
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |NOiSE|
  (|SANiTiSE| (/ |NOiSE| 100) 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
16> error: unbound function - |MiN|
if continued: try evaluating symbol again
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.8
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |GAiN|
  (|SANiTiSE| |GAiN| 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.25
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |NOiSE|
  (|SANiTiSE| (/ |NOiSE| 100) 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
17> error: unbound function - |iF|
if continued: try evaluating symbol again
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  PDUR
  (|iF| (GET (QUOTE *TRACK*) (QUOTE |ViEW|)) DECAY (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.8
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |GAiN|
  (|SANiTiSE| |GAiN| 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.25
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |NOiSE|
  (|SANiTiSE| (/ |NOiSE| 100) 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
18> error: unbound function - |LiST|
if continued: try evaluating symbol again
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  *RDRUM-TABLE*
  (|LiST| (MULT 0.17 (SUM (SCALE 1 (|BUiLD-HARMONiC| 10 2048)) (SCALE 1.5 (|BUiLD-HARMONiC| 16 2048)) (SCALE 2 (|BUiLD-HARMONiC| 22 2048)) (SCALE 1.5 (|BUiLD-HARMONiC| 23 2048)))) (HZ-TO-STEP 1) T)
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  PDUR
  (|iF| (GET (QUOTE *TRACK*) (QUOTE |ViEW|)) DECAY (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.8
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |GAiN|
  (|SANiTiSE| |GAiN| 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.25
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |NOiSE|
  (|SANiTiSE| (/ |NOiSE| 100) 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
19> LOG2
19> |PERCUSSiON-ENV|
19> |RiSSET-DRUM|
19> error: unbound function - LOWPASS6
if continued: try evaluating symbol again
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  |PiNK|
  (LOWPASS6 (|NOiSE| DECAY2) BW)
Function: #<FSubr-LET*: #0x55872c4f8b90>
Arguments:
  ((DECAY2 (* DECAY 0.5)) (LOW-NOTE (* FREQ 0.1)) (|TONE-GAiN| (- 1 |NOiSE-GAiN|)))
  (SETF |PiNK| (LOWPASS6 (|NOiSE| DECAY2) BW))
  (SETF RDRUM (MULT |TONE-GAiN| (OSC (HZ-TO-STEP LOW-NOTE) DECAY2 *RDRUM-TABLE*)))
  (SETF |NOiSE-BAND| (MULT |NOiSE-GAiN| (|SiNE| (HZ-TO-STEP CF) DECAY2) |PiNK|))
  (SUM (MULT (|PERCUSSiON-ENV| DECAY2) (SUM |NOiSE-BAND| RDRUM)) (MULT |TONE-GAiN| (|PERCUSSiON-ENV| DECAY) (|SiNE| (HZ-TO-STEP FREQ) DECAY)))
Function: #<Closure-RiSSET-DRUM: #0x55872d6353c0>
Arguments:
  100
  2
  500
  400
  25
Function: #<FSubr-LET*: #0x55872c4f8b90>
Arguments:
  ((OUTPUT (|RiSSET-DRUM| FREQ DECAY CF BW |NOiSE|)) (OUTPUT (EXTRACT-ABS 0 PDUR OUTPUT)) (PEAKVAL (PEAK OUTPUT NY:ALL)))
  (SCALE (/ |GAiN| PEAKVAL) OUTPUT)
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  *RDRUM-TABLE*
  (|LiST| (MULT 0.17 (SUM (SCALE 1 (|BUiLD-HARMONiC| 10 2048)) (SCALE 1.5 (|BUiLD-HARMONiC| 16 2048)) (SCALE 2 (|BUiLD-HARMONiC| 22 2048)) (SCALE 1.5 (|BUiLD-HARMONiC| 23 2048)))) (HZ-TO-STEP 1) T)
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  PDUR
  (|iF| (GET (QUOTE *TRACK*) (QUOTE |ViEW|)) DECAY (GET (QUOTE *PROJECT*) (QUOTE |PREViEW-DURATiON|)))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.8
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |GAiN|
  (|SANiTiSE| |GAiN| 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  0.25
  0
  1
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  |NOiSE|
  (|SANiTiSE| (/ |NOiSE| 100) 0 1)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  400
  10
  1000
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  BW
  (|SANiTiSE| BW 10 1000)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  500
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  CF
  (|SANiTiSE| CF 1 (/ *SOUND-SRATE* 2))
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  2
  0.1
  600
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  DECAY
  (|SANiTiSE| DECAY 0.1 600)
Function: #<Closure-SANiTiSE: #0x55872d647b20>
Arguments:
  100
  1
  22050
Function: #<FSubr-SETQ: #0x55872c4fdd38>
Arguments:
  FREQ
  (|SANiTiSE| FREQ 1 (/ *SOUND-SRATE* 2))
Function: #<FSubr-SETF: #0x55872d64b990>
Arguments:
  *SYSTEM-TIME*
  (|LiST| 2022 220 14 10 9)
20> 19> 18> 17> 16> 15> 14> 13> 12> 11> 10> 9> 8> 7> 6> 5> 4> 3> 2> 1>

İ’m using Pop!_OS 20.04. But İ’ve used Arch before with the same issue.

How about the effect:
“Effect menu > Studio Fade-out” (https://manual.audacityteam.org/man/fades.html#studio_fadeout)

Unfortunately not working. Same nyquist message.

OK, so it seems that the problem affects all Nyquist effects (not just “Rhythm Track”).
I don’t think that it is inherently an Audacity problem because this is the only report of this problem that I’ve seen, and I’m not able to reproduce it myself. Perhaps it would be worth contacting pop!_os to see if they can reproduce the problem (https://support.system76.com/)