$ speaker-test -Dhw:0,3 -c 2

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speaker-test 1.1.8

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Playback device is hw:0,3

Stream parameters are 48000Hz, S16_LE, 2 channels

Using 16 octaves of pink noise

Rate set to 48000Hz (requested 48000Hz)

Buffer size range from 64 to 16384

Period size range from 32 to 8192

Using max buffer size 16384

Periods = 4

was set period_size = 4096

was set buffer_size = 16384

 0 - Front Left

snd_pcm_hw_writei

hw_writei: frames = 4096, xferi.result = 4096, err = 0

snd_pcm_hw_writei

hw_writei: frames = 4096, xferi.result = 4096, err = 0

snd_pcm_hw_writei

hw_writei: frames = 4096, xferi.result = 4096, err = 0

snd_pcm_hw_writei

hw_writei: frames = 4096, xferi.result = 4096, err = 0

snd_pcm_hw_writei

hw_writei: frames = 4096, xferi.result = -5, err = -5

Write error: -5,I/O error

xrun_recovery failed: -5,I/O error

Transfer failed: I/O error