Comment 25 for bug 1286021

https://bugs.freedesktop.org/show_bug.cgi?id=85446#c10

does 2.1 really work since pulseaudio probe front device, the softvol create a two channels pcm softvol but 2.1 try to create a 6 channel pcm softvol

0.170| 0.000) D: [pulseaudio] alsa-util.c: Route conversion PCM
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Transformation table:
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 0 <- 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 1 <- 1
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 2 <- none
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 3 <- none
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 4 <- none
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: 5 <- 2
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Its setup is:
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: stream : PLAYBACK
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: access : MMAP_INTERLEAVED
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: format : S16_LE
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: subformat : STD
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: channels : 3
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: rate : 44100
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: exact rate : 44100 (44100/1)
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: msbits : 16
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: buffer_size : 88200
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_size : 44100
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_time : 1000000
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: tstamp_mode : ENABLE
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_step : 1
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: avail_min : 87612
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_event : 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: start_threshold : -1
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: stop_threshold : 6206523236469964800
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: silence_threshold: 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: silence_size : 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: boundary : 6206523236469964800
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Slave: Soft volume PCM
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Control: PCM Playback Volume
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: min_dB: -51
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: max_dB: 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: resolution: 256
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Its setup is:
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: stream : PLAYBACK
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: access : MMAP_INTERLEAVED
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: format : S16_LE
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: subformat : STD
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: channels : 6
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: rate : 44100
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: exact rate : 44100 (44100/1)
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: msbits : 16
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: buffer_size : 88200
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_size : 44100
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_time : 1000000
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: tstamp_mode : ENABLE
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_step : 1
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: avail_min : 87612
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: period_event : 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: start_threshold : -1
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: stop_threshold : 6206523236469964800
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: silence_threshold: 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: silence_size : 0
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: boundary : 6206523236469964800
( 0.170| 0.000) D: [pulseaudio] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel PCH' device 0 subdevice 0