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[[Category:Installation Tutorials| Installation Tutorials]]
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AlternateSC = null: MOST cards function this way, default without a setting
[[Analog, Optical, and Coax]] are treated the way they always have been, given only the card# to write to /etc/asound.conf and /etc/pluto/xine.conf
HDMI is given the card# and the device# to write to the confs.
nVidia GT series is automatically detected, and given a special set of values, also using the card and the device number.

AlternateSC = 1: Should only be necessary with old nvidia, or certain ATI/Intel GPUs over HDMI.
HDMI is given only the card#. The rest are the same as null. 

AlternateSC = 2: should only be necessary for oddballs that do not work under other two schemes, covers newer equipment.
All (Analog, Optical, Coax, and HDMI) are given the GT series extended scheme, including both the card# and device#.


==AlternateSC = null==
===Analog, Optical, Coax===

 </etc/pluto/alsa/virtual_cards.conf>
 
 pcm_slave.spdif_convert48k {
 	pcm "spdif:0"
 	rate 48000
 }
 
 pcm.spdif_playback {
 	type plug
 	slave spdif_convert48k
 }
 
 pcm_slave.hdmi_convert48k {
 	pcm "hdmi:0"
 	rate 48000
 }
 
 pcm.hdmi_playback {
 	type plug
 	slave hdmi_convert48k
 }
 
 pcm.asym_spdif {
 	type asym
 	playback.pcm "spdif_playback"
 	capture.pcm "plughw:0"
 }
 
 pcm.asym_hdmi {
 	type asym
 	playback.pcm "hdmi_playback"
 	capture.pcm "plughw:0"
 }
 
 pcm.asym_analog {
 	type asym
 	playback.pcm "plug:dmix:0"
 	capture.pcm "plughw:0"
 }
 pcm.!default asym_analog

===HDMI===
 </etc/pluto/alsa/virtual_cards.conf>
 
 pcm_slave.spdif_convert48k {
 	pcm "spdif:0,3"
 	rate 48000
 }
 
 pcm.spdif_playback {
 	type plug
 	slave spdif_convert48k
 }
 
 pcm_slave.hdmi_convert48k {
 	pcm "hdmi:0,3"
 	rate 48000
 }
 
 pcm.hdmi_playback {
 	type plug
 	slave hdmi_convert48k
 }
 
 pcm.asym_spdif {
 	type asym
 	playback.pcm "spdif_playback"
 	capture.pcm "plughw:0,3"
 }
 
 pcm.asym_hdmi {
 	type asym
 	playback.pcm "hdmi_playback"
 	capture.pcm "plughw:0,3"
 }
 
 pcm.asym_analog {
 	type asym
 	playback.pcm "plug:dmix:0,3"
 	capture.pcm "plughw:0,3"
 }
 pcm.!default asym_hdmi

===nVidia GT series HDMI===
 </etc/pluto/alsa/virtual_cards.conf>
 
 pcm_slave.spdif_convert48k {
 	pcm "spdif:1,7"
 	rate 48000
 }
 
 pcm.spdif_playback {
 	type plug
 	slave spdif_convert48k
 }
 
 pcm_slave.hdmi_convert48k {
 	pcm "hdmi:1,7"
 	rate 48000
 }
 
 pcm.hdmi_playback {
 	type plug
 	slave hdmi_convert48k
 }
 
 pcm.asym_spdif {
 	type asym
 	playback.pcm "spdif_playback"
 	capture.pcm "plughw:1,7"
 }
 
 pcm.asym_hdmi {
 	type asym
 	playback.pcm "hdmi_playback"
 	capture.pcm "plughw:1,7"
 }
 
 pcm.asym_analog {
 	type asym
 	playback.pcm "plug:dmix:1,7"
 	capture.pcm "plughw:1,7"
 }
 
 pcm.!hdmi {
 	@args [ AES0 AES1 AES2 AES3 ]
 	@args.AES0 {
 		type integer
 		# consumer, not-copyright, emphasis-none, mode=0
 		default 0x04
 	}
 	@args.AES1 {
 		type integer
 		# original, PCM coder
 		default 0x00
 	}
 	@args.AES2 {
 		type integer
 		# source and channel
 		default 0x00
 	}
 	@args.AES3 {
 		type integer
 		# fs=48000Hz, clock accuracy=1000ppm
 		default 0x00
 	}
 	type hooks
 	slave.pcm {
 		type hw
 		card 1
 		device 7
 	}
 	hooks.0 {
 		type ctl_elems
 		hook_args [
 		{
 			name "IEC958 Playback Default"
 			lock true
 			preserve true
 			value [ $AES0 $AES1 $AES2 $AES3 ]
 		}
 		{
 			name "IEC958 Playback Switch"
 			lock true
 			preserve true
 			value true
 		}
 		]
 	}
 }
 pcm.!default asym_hdmi



==Alternate = 1==
===HDMI===
 </etc/pluto/alsa/virtual_cards.conf>
 
 pcm_slave.spdif_convert48k {
 	pcm "spdif:0"
 	rate 48000
 }
 
 pcm.spdif_playback {
 	type plug
 	slave spdif_convert48k
 }
 
 pcm_slave.hdmi_convert48k {
 	pcm "hdmi:0"
 	rate 48000
 }
 
 pcm.hdmi_playback {
 	type plug
 	slave hdmi_convert48k
 }
 
 pcm.asym_spdif {
 	type asym
 	playback.pcm "spdif_playback"
 	capture.pcm "plughw:0"
 }
 
 pcm.asym_hdmi {
 	type asym
 	playback.pcm "hdmi_playback"
 	capture.pcm "plughw:0"
 }
 
 pcm.asym_analog {
 	type asym
 	playback.pcm "plug:dmix:0"
 	capture.pcm "plughw:0"
 }
 pcm.!default asym_hdmi



==Alternate = 2==
===Analog, Optical, Coax, and HDMI===
 </etc/pluto/alsa/virtual_cards.conf>
 
 pcm_slave.spdif_convert48k {
 	pcm "spdif:0,3"
 	rate 48000
 }
 
 pcm.spdif_playback {
 	type plug
 	slave spdif_convert48k
 }
 
 pcm_slave.hdmi_convert48k {
 	pcm "hdmi:0,3"
 	rate 48000
 }
 
 pcm.hdmi_playback {
 	type plug
 	slave hdmi_convert48k
 }
 
 pcm.asym_spdif {
 	type asym
 	playback.pcm "spdif_playback"
 	capture.pcm "plughw:0,3"
 }
 
 pcm.asym_hdmi {
 	type asym
 	playback.pcm "hdmi_playback"
 	capture.pcm "plughw:0,3"
 }
 
 pcm.asym_analog {
 	type asym
 	playback.pcm "plug:dmix:1,7"
 	capture.pcm "plughw:0,3"
 }
 
 pcm.!hdmi {
 	@args [ AES0 AES1 AES2 AES3 ]
 	@args.AES0 {
 		type integer
 		# consumer, not-copyright, emphasis-none, mode=0
 		default 0x04
 	}
 	@args.AES1 {
 		type integer
 		# original, PCM coder
 		default 0x00
 	}
 	@args.AES2 {
 		type integer
 		# source and channel
 		default 0x00
 	}
 	@args.AES3 {
 		type integer
 		# fs=48000Hz, clock accuracy=1000ppm
 		default 0x00
 	}
 	type hooks
 	slave.pcm {
 		type hw
 		card 0
 		device 3
 	}
 	hooks.0 {
 		type ctl_elems
 		hook_args [
 		{
 			name "IEC958 Playback Default"
 			lock true
 			preserve true
 			value [ $AES0 $AES1 $AES2 $AES3 ]
 		}
 		{
 			name "IEC958 Playback Switch"
 			lock true
 			preserve true
 			value true
 		}
 		]
 	}
 }
 pcm.!default asym_hdmi