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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoPlainText><span lang=EN-US>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? <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>The default sample channels and channel map are commented in /etc/pulse/daemon.conf:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>;default-sample-channels =2<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>;default-channel-map= front-left,front-right<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>It seems the card has no profiles for surround output, by </span><span lang=EN-US style='font-family:"Courier New"'>“</span><span lang=EN-US>pacmd list-cards</span><span lang=EN-US style='font-family:"Courier New"'>”</span><span lang=EN-US>:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>profiles:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> output:analog-stereo: Analog Stereo Output (priority 6000)<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6060)<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> input:analog-stereo: Analog Stereo Input (priority 60)<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> off: Off (priority 0)<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Here is the playback device names I got by "aplay -L"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>front:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> Front speakers<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>surround40:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US>4.0 Surround output to Front and Rear speakers <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>surround41:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US>4.1 Surround output to Front, Rear and Subwoofer speakers <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>surround50:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US>5.0 Surround output to Front, Center and Rear speakers <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>surround51:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US>5.1 Surround output to Front, Center, Rear and Subwoofer speakers <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>surround71:CARD=Intel,DEV=0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> HDA Intel, ALC662 rev1 Analog<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US>7.1 Surround output to Front, Center, Side, Rear and Woofer speaker<o:p></o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Many thanks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Mengdong<o:p></o:p></span></p></div></body></html>