Comment # 78 on bug 1201418 from ted chang

Does not play in the right speaker but plays in the left despite showing dummy
output

 speaker-test -Dplughw:1,1 -c2

speaker-test 1.2.7

Playback device is plughw:1,1
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 512 to 16384
Period size range from 256 to 2048
Using max buffer size 16384
Periods = 4
was set period_size = 2048
was set buffer_size = 16384
 0 - Front Left
 1 - Front Right
Time per period = 5.631179
 0 - Front Left
 1 - Front Right


plays in both headphones

speaker-test -Dplughw:1,0 -c2

Playback device is plughw:1,0
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 256 to 8192
Period size range from 128 to 1024
Using max buffer size 8192
Periods = 4
was set period_size = 1024
was set buffer_size = 8192
 0 - Front Left
 1 - Front Right