The sound card on my desktop supports 5.1 sound output, but PA only show one sink for the 2-channel front speaker. Why? Is it mean that PA cannot support surround output by default?
The default sample channels and channel map are commented in /etc/pulse/daemon.conf:
;default-sample-channels =2
;default-channel-map= front-left,front-right
It seems the card has no profiles for surround output, by "pacmd list-cards":
profiles:
output:analog-stereo: Analog Stereo Output (priority 6000)
output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6060)
input:analog-stereo: Analog Stereo Input (priority 60)
off: Off (priority 0)
Here is the playback device names I got by "aplay -L"
front:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speaker
Many thanks
Mengdong
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