This file is indexed.

/usr/share/alsa/cards/ICH4.conf is in libasound2 1.0.25-1ubuntu10.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
#
# Configuration for the Intel ICH4/ICH5/ICH6 chips
#

<confdir:pcm/front.conf>

ICH4.pcm.front.0 {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type softvol
	slave.pcm {
		type hw
		card $CARD
	}
	control {
		name "PCM Playback Volume"
		card $CARD
	}
}	

# default with dmix+softvol & dsnoop
ICH4.pcm.default {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type asym
	playback.pcm {
		type plug
		slave.pcm {
			type softvol
			slave.pcm {
				@func concat
				strings [ "dmix:" $CARD ]
			}
			control {
				name "PCM Playback Volume"
				card $CARD
			}
		}
	}
	capture.pcm {
		type plug
		slave.pcm {
			@func concat
			strings [ "dsnoop:" $CARD ]
		}
	}
}

<confdir:pcm/surround40.conf>

ICH4.pcm.surround40.0 {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type softvol
	slave.pcm {
		type hooks
		slave.pcm {
			type hw
			card $CARD
			channels 4
		}
		hooks.0 {
			type ctl_elems
			hook_args [
			{
				name "Channel Mode"
				preserve true
				value "4ch"
				lock true
				optional true
			}
			# for old drivers
			{
				name "Line-In As Surround"
				preserve true
				value true
				optional true
			}
			{
				name "Surround Down Mix"
				preserve true
				value off
				lock true
				optional true
			}
			]
		}
	}
	control {
		name "PCM Playback Volume"
		card $CARD
	}
}

<confdir:pcm/surround41.conf>
<confdir:pcm/surround50.conf>
<confdir:pcm/surround51.conf>

ICH4.pcm.surround51.0 {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type softvol
	slave.pcm {
		type hooks
		slave.pcm {
			type hw
			card $CARD
			channels 6
		}
		hooks.0 {
			type ctl_elems
			hook_args [
			{
				name "Channel Mode"
				preserve true
				value "6ch"
				lock true
				optional true
			}
			# for old drivers
			{
				name "Line-In As Surround"
				preserve true
				value true
				optional true
			}
			{
				name "Mic As Center/LFE"
				preserve true
				value true
				optional true
			}
			{
				name "Surround Down Mix"
				preserve true
				value off
				lock true
				optional true
			}
			{
				name "Center/LFE Down Mix"
				preserve true
				value off
				lock true
				optional true
			}
			]
		}
	}
	control {
		name "PCM Playback Volume"
		card $CARD
	}
}

<confdir:pcm/iec958.conf>

ICH4.pcm.iec958.0 {
	@args [ CARD AES0 AES1 AES2 AES3 ]
	@args.CARD {
		type string
	}
	@args.AES0 {
		type integer
	}
	@args.AES1 {
		type integer
	}
	@args.AES2 {
		type integer
	}
	@args.AES3 {
		type integer
	}
	type hooks
	slave.pcm {
		type hw
		card $CARD
		device 4
	}
	hooks.0 {
		type ctl_elems
		hook_args [
			{
				name "IEC958 Playback AC97-SPSA"
				lock true
				preserve true
				value 3
				optional true
			}
			{
				name "IEC958 Playback Default"
				lock true
				preserve true
				value [ $AES0 $AES1 $AES2 $AES3 ]
			}
			{
				name "IEC958 Playback Switch"
				lock true
				preserve true
				value true
			}
		]
	}
}