Napravi fajl /etc/asound.conf i u njega stavi:
# vim:noet:ts=8:sw=2
# Updated 050916, notes {at} notes.for.sabi.co.UK
# Syntax described in these links:
# http://ALSA-project.org/alsa-doc/alsa-lib/conf.html"
# http://ALSA-project.org/alsa-doc/alsa-lib/confarg.html"
# http://ALSA-project.org/alsa-doc/alsa-lib/conffunc.html
# http://ALSA-project.org/alsa-doc/alsa-lib/confhooks.html
# In this file I use a style similar to the one I use for CSS style sheets.
# It may also help to read:
# http://WWW.sabi.co.UK/Notes/linuxSoundALSA.html
# Also check carefully the contents of '/usr/share/alsa/alsa.conf',
# especially for the one liners defining standard device names
# and attributes.
# The device names "default", "dsp0", "mixer0" have special meanings.
# Standard channel number assignments:
# 0 front left 1 front right,
# 2 rear left 3 rear right
# 4 center 5 lfe/subwoofer
# 6 side left 7 side right
########################################################################
# Direct access to the hardware PCM and mixer devices
pcm.card0 { type hw; card 0; }
ctl.card0 { type hw; card 0; }
########################################################################
# Read very carefully the ALSA PCM plugin page at:
# http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html
# For the 'asym', 'dsnoop', 'dmix' plugins also read:
# http://ALSA.OpenSrc.org/index.php?page=asym
# http://ALSA.OpenSrc.org/index.php?page=dsnoop
# http://ALSA.OpenSrc.org/index.php?page=DmixPlugin
########################################################################
# The top level shared pseudo device, with both PCM and CTL interfaces
# The ALSA default is "default", but many programs like XMMS and 'aoss'
# assume "dsp0" as default name for PCM and "mixer0" for CTL.
# Amazingly, XMMS has problems if one defines 'pcm.dsp0' to be
# 'plug' for 'pcm.asym0' and not directly as 'asym'.
pcm.!default { type asym;
capture.pcm "dsnoop0";
playback.pcm "dmix0"; }
ctl.!default { type hw; card 0; }
########################################################################
pcm.dsp0 { type asym;
capture.pcm "dsnoop0";
playback.pcm "dmix0"; }
ctl.dsp0 { type hw; card 0; }
ctl.mixer0 { type hw; card 0; }
# Just trying: probably wrong.
pcm.digi0 { type iec958;
slave.pcm "hw:0,2"; }
ctl.digi0 { type hw; card 0; }
########################################################################
# The two detailed card configurations are for generic 2 to 5.1 channel
# chipsets. It is assumed that both cards need software sharing, and can
# only natively handle 48000Hz.
# These assumptions are fairly typical of recent (2004) low end and
# on-motherboard cards and chipsets, and their configs are not really
# specific to either models.
########################################################################
# CARD 0 SW MIXING
# ################
pcm.asym0 { type asym;
capture.pcm "dsnoop0";
playback.pcm "dmix0"; }
pcm.dsnoop0 { type dsnoop;
ipc_key 13758;
slave.pcm "hw:0,0"; }
# Buffering (period time defaults to 125000 usecs).
# Size of period, expressed either in usec or byte units:
# period_time USECS
# period_size BYTES
# Size of buffers, expressed either in period, usec, or byte units:
# periods PERIODS
# buffer_time USECS
# buffer_size BYTES
# The ALSA docs have examples with 'period_time' set to 0,
# when 'period_size' and 'buffer_size' are used instead,
# but this can cause trouble in later releases of ALSA.
# For OSS compatibility, 'period_size' and 'buffer_size'
# should be powers of 2. Also, many cards cannot accept
# a 'period_size' much greater than 4096, so 4096 is safe.
# On my VIA 8233A, any value for 'period_time' greater than
# 85333 usecs (precisely!) causes hiccups in sound output.
# Why? At 48kHz, 85333 usec are are just over 4096 bytes/channel.
pcm.dmix0 { type dmix;
ipc_key 13759;
slave.pcm "hw:0";
slave.channels 2;
slave.rate 48000;
slave.period_size 4096;
slave.buffer_size 81920;
slave.period_time 84000;
slave.buffer_time 504000;
bindings.0 0;
bindings.1 1; }
pcm.dmix0-40 { type dmix;
ipc_key 13761;
slave.pcm "hw:0";
slave.channels 4;
slave.rate 48000;
slave.period_size 4096;
slave.buffer_size 81920;
slave.period_time 84000;
slave.buffer_time 504000;
bindings.0 0;
bindings.1 1;
bindings.2 2;
bindings.3 3; }
pcm.dmix0-51 { type dmix;
ipc_key 13761;
slave.pcm "hw:0";
slave.channels 6;
slave.rate 48000;
slave.period_size 4096;
slave.buffer_size 81920;
slave.period_time 84000;
slave.buffer_time 504000;
bindings.0 0;
bindings.1 1;
bindings.2 2;
bindings.3 3;
bindings.4 4;
bindings.5 5; }
########################################################################
# 4 CHANNEL AS 2 STEREO
# #####################
# Using one four channel card as two stereo cards.
# http://ALSA.OpenSrc.org/index.php?page=.asoundrc
#################
# 1st card, front
pcm.card0-f { type route;
slave.pcm "hw:0,0";
slave.channels 2;
ttable.0.0 1.0;
ttable.1.1 1.0; }
# Not quite right.
ctl.card0-f { type hw; card 0; }
################
# 1st card, rear
# Note that all (some?) USB sound device config do not define the
# 'surroundXY' style name, so substitute the equivalent 'hw' name.
pcm.card0-r { type route;
slave.pcm "surround40:0";
slave.channels 4;
ttable.0.2 1.0;
ttable.1.3 1.0; }
# Not quite right
ctl.card0-r { type hw, card 0; }
######################################
# 1st card, sides (often on a 2nd DAC)
pcm.card0-s { type route;
slave.pcm "surround71:0";
slave.channels 8;
ttable.0.6 1.0;
ttable.1.7 1.0; }
# Not quite right
ctl.card0-s { type hw, card 0; }
########################################################################
# STEREO TO 4 OR 5.1
# ##################
# Distribute 2 channel stereo to 4 or 5.1 surround channels
# 'surround40' and 'surround51' should be predefined.
# http://ALSA.OpenSrc.org/index.php?page=FAQ028
# http://ALSA.OpenSrc.org/index.php?page=SurroundSound
# 'table.X.Y Z' means add channel 'X' multiplied by 'Z' to 'Y'.
# Probably does not support sharing, stack 'dsnoop' on top for that.
# Note that all (some?) USB sound device config do not define the
# 'surroundXY' style name, so substitute the equivalent 'hw' name.
##########
# 1st card
pcm.stereo0-40 { type route;
slave.pcm "dmix0-40";
slave.channels 4;
ttable.0.0 1.0;
ttable.0.2 0.8;
ttable.1.1 1.0;
ttable.1.3 0.8; }
ctl.stereo0-40 { type hw; card 0; }
pcm.stereo0-51 { type route;
slave.pcm "dmix0-51";
slave.channels 6;
ttable.0.0 1.0;
ttable.0.2 0.8;
ttable.0.4 0.4;
ttable.0.5 0.4;
ttable.1.1 1.0;
ttable.1.3 0.8;
ttable.1.4 0.4;
ttable.1.5 0.4; }
ctl.stereo0-51 { type hw; card 0; }
########################################################################;
# 2 CARDS AS 1
# ############
# Using multiple cards to simulate a single card is usually a bad idea
# because they have different latencies and multichannel sound can come
# out with quite a bit of skew. Some people however have a legitimate
# need for this.
# Using two cards as one four channel card.
# http://ALSA.OpenSrc.org/index.php?page=TwoCardsAsOne
######################################
# 1st >= 2 channels, 2nd >= 2 channels
pcm.multi4 { type multi;
# could be "dmix0"
slaves.a.pcm "hw:0,0";
slaves.a.channels 2;
# could be "dmix1"
slaves.b.pcm "hw:1,0";
slaves.b.channels 2;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave b;
bindings.2.channel 0;
bindings.3.slave b;
bindings.3.channel 1; }
ctl.multi4 { type hw; card 0; }
# Using two cards as one 5.1 channel card, the first has
# 2 channels and the second has 4 channels, and viceversa.
# http://ALSA.OpenSrc.org/index.php?page=TwoCardsAsOne
######################################
# 1st >= 2 channels, 2nd >= 4 channels
pcm.multi51-24 { type multi;
# could be "dmix0"
slaves.a.pcm "hw:0,0";
slaves.a.channels 2;
# could be "dmix1"
slaves.b.pcm "surround40:1";
slaves.b.channels 4;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave b;
bindings.2.channel 0;
bindings.3.slave b;
bindings.3.channel 1;
# Center, physically rear left, 2nd card
bindings.4.slave b;
bindings.4.channel 2;
# LFE/subwoofer, physically rear right, 2nd card
bindings.5.slave b;
bindings.5.channel 3; }
# Not quite right.
ctl.multi51-24 { type hw; card 0; }
######################################
# 1st >= 4 channels, 2nd >= 2 channels
pcm.multi51-42 { type multi;
# could be "dmix0"
slaves.a.pcm "surround40:0";
slaves.a.channels 4;
# could be "dmix1"
slaves.b.pcm "hw:1,0";
slaves.b.channels 2;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave a;
bindings.2.channel 2;
bindings.3.slave a;
bindings.3.channel 3;
# Center, physically front left, 2nd card
bindings.4.slave b;
bindings.4.channel 0;
# LFE/subwoofer, physically front right, 2nd card
bindings.5.slave b;
bindings.5.channel 1; }
# Not quite right.
ctl.multi51-42 { type hw; card 0; }
########################################################################;
# STEREO TO 0 AND 1
# #################
# Duplicate 2 channel stereo to two 2 channel stereo cards, joined
# together as a single virtual 4 channel card.
pcm.stereo01 { type route;
slave.pcm "multi4";
slave.channels 4;
# 0 front left 1 front right,
# 2 rear left 3 rear right
# ttable.<source>.<destination>
ttable.0.0 1.0;
ttable.0.2 1.0;
ttable.1.1 1.0;
ttable.1.3 1.0; }
ctl.stereo01 { type hw; card 0; }
########################################################################
# SW VOLUME CONTROL
# #################
#pcm.name { type softvol;
# slave STR;
# control {
# name STR;
# [card INT;]
# [iface STR;]
# [index INT;]
# [device INT;]
# [subdevice INT;]
# [count INT;]
# }
# }
########################################################################
# FILE OUTPUT
# ###########
pcm.file0 { type file;
file "/tmp/alsa.raw";
slave.pcm "dsp0";
#[format "raw";]
#[perm 0600;]
}
ctl.file0 { type hw; card 0; }
Zatim resetuj alsa servis (ili resetuj racunar...)
