Hello!
I will try to summarize my tests of the current (13 January) CVS tree
for this driver:
For playback, the following /etc/asound.state file works:
state.card0 {
control.1 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 15'
iface MIXER
name 'Master Playback Volume'
value.0 15
value.1 15
}
control.2 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'Loud Playback Switch'
value true
}
control.3 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'PCM Playback Switch'
value.0 true
value.1 true
}
control.4 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 63'
iface MIXER
name 'PCM Playback Volume'
value.0 63
value.1 63
}
control.21 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name '3D Control - Switch'
value true
}
control.22 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 3'
iface MIXER
name 'PC Speaker Playback Volume'
value 0
}
control.23 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'FM Playback Switch'
value true
}
control.24 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'IEC958 Input Capture Switch'
value true
}
control.25 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'IEC958 Input Playback Switch'
value true
}
}
state.CARD_0 {
control.1 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 15'
iface MIXER
name 'Master Playback Volume'
value.0 15
value.1 15
}
control.2 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'Loud Playback Switch'
value true
}
control.3 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'PCM Playback Switch'
value.0 true
value.1 true
}
control.4 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 63'
iface MIXER
name 'PCM Playback Volume'
value.0 61
value.1 61
}
control.9 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'CD Playback Switch'
value.0 true
value.1 true
}
control.11 {
comment.access 'read write'
comment.type INTEGER
comment.range '0 - 15'
iface MIXER
name 'CD Playback Volume'
value.0 12
value.1 12
}
control.21 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name '3D Control - Switch'
value true
}
control.23 {
comment.access 'read write'
comment.type BOOLEAN
iface MIXER
name 'FM Playback Switch'
value true
}
}
Notice that I have deleted the controls with false or zero values to
save some place. For card0, the SB controls are absent. There are also
some differences between controls for card0 and CARD_0, why ?
I get the CARD_0 controls when using alsamixer.
The important thing to notice is that the SB
controls need not to be unmuted (as I first believe was necessary) !
So to have playback it is not needed
to define these SB controls in routine cmi8330_add_sb_mixers().
But the SB initialization step is probably mandatory (I will test it).
Actually, this is somehow curious, as PLAYBACK_ON_SB is defined, and
so playback should go through SB ??? It is apparently not the case.
Only one application did not work correctly, namely the old libc5
based xquake (yes, I have done
echo "xquake.real 0 0 direct" >/proc/asound/card0/pcm0p/oss).
There is sound, but extremely noisy.
Some words about the behaviour of the SB controls in alsamixer:
"SB" control follows the "SB Capture" control value.
"SB Synth", "SB PCM" and "SB Speaker" do not respond to commands.
"SB CD", "SB Line" and "SB Mic" cannot have values above 10%.
I have also tried both "SB Mic" and "Mic" controls in alsamixer,
but capture did not work at all (only noise is registered and I have
Larsen effect when the volume is pushed too high). Nevertheless,
as "SB Mic" cannot have values above 10%, here lies perhaps the
problem.
I will now try to use #undefine PLAYBACK_ON_SB.
Concerning the SB16 driver, I could not record either
(arecord is blocking indefinitly). Changing the 16 bits DMA control
did not help.
Regards.
--
Bernard Urban
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