Pure Data audio issues

gistfile1.txt

ajfaraday@scaled-up:/opt/scaled_up$ pd-extended -open pd/test-tones.pd -alsa -listdev -nogui
audio input devices:
1. HDA NVidia (hardware)
2. HDA NVidia (plug-in)
audio output devices:
1. HDA NVidia (hardware)
2. HDA NVidia (plug-in)
API number 1

no midi input devices found
no midi output devices found

[...]

verbose(3): PDP: pure data packet version 0.12.7
priority 6 scheduling enabled.
priority 8 scheduling enabled.
tried but couldn't sync A/D/A


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ajfaraday@scaled-up:/opt/scaled_up$ pd-extended -open pd/test-tones.pd -oss -listdev -nogui
no audio input devices found
no audio output devices found
API number 2

[...]

priority 6 scheduling enabled.
/dev/dsp (read/write): No such file or directory
(now will try write-only...)
/dev/dsp (writeonly): No such file or directory
/dev/dsp (readonly): No such file or directory
priority 8 scheduling enabled.
error: audio I/O stuck... closing audio

/dev/dsp (read/write): No such file or directory
(now will try write-only...)
/dev/dsp (writeonly): No such file or directory
/dev/dsp (readonly): No such file or directory
error: audio I/O stuck... closing audio

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ajfaraday@scaled-up:/opt/scaled_up$ ls /dev/dsp
ls: cannot access /dev/dsp: No such file or directory

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ajfaraday@scaled-up:/opt/scaled_up$ ls /dev/snd/
by-path  controlC0  hwC0D0  pcmC0D0c  pcmC0D0p  pcmC0D2c  pcmC0D3p  seq  timer

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ajfaraday@scaled-up:/opt/scaled_up$ ls /dev/snd/by-path/
pci-0000:00:05.0

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ajfaraday@scaled-up:/opt/scaled_up$ cat /proc/asound/cards 
 0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfe024000 irq 22

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ajfaraday@scaled-up:/opt/scaled_up$ lspci | grep Audio
00:05.0 Audio device: NVIDIA Corporation MCP61 High Definition Audio (rev a2)