Hello!
On sre, 2002-10-23 at 20:19, Rob Browning wrote:
> Jaroslav Kysela <[EMAIL PROTECTED]> writes:
> > Use: amixer sset Capture cap
> > amixer sset Capture nocap
> > mute/unmute keywords are parsed only for playback
>
> While still trying to figure out whether or not it's possible for me
> to record from my Line,0 with Playback [off], I came across your reply
> to someone who was trying to get capture to work from a script
> (similar to what I'm trying to do).
> Your suggestion does seem to turn capture on/off temporarily, but the
> next "amixer get Line,0" shows "Capture [off]" whenever Playback is
> also off.
>
> $ amixer sset Line,0 capture nocap | grep " Front"
> Front Left: 24 [77%] Playback [off] Capture [off]
> Front Right: 24 [77%] Playback [off] Capture [off]
>
> $ amixer sset Line,0 capture cap | grep " Front"
> Front Left: 24 [77%] Playback [off] Capture [on]
> Front Right: 24 [77%] Playback [off] Capture [on]
>
> $ amixer sget Line,0
> Simple mixer control 'Line',0
> Capabilities: volume pswitch cswitch
> Playback channels: Front Left - Front Right
> Capture channels: Front Left - Front Right
> Limits: 0 - 31
> Front Left: 24 [77%] Playback [off] Capture [off]
> Front Right: 24 [77%] Playback [off] Capture [off]
>
> Is this expected? I can get another sound card just for capture if I
> need to, but I'd rather not if my current card (AudioPCI) is capable
> of doing the job quietly.
I have a SB PCI 128 (ens1370 with ak4531-codec) and it has the same
problem. The thing is that simple controls interface just can't do it
right.
So you have to do it directly with the raw controls.
josef:/usr/src$ amixer cset numid=21 on,off,off,on
numid=21,iface=MIXER,name='Line Capture Route'
; type=BOOLEAN,access=rw---,values=4
: values=on,off,off,on
josef:/usr/src$ amixer cset numid=18 on
numid=18,iface=MIXER,name='Line Switch'
; type=BOOLEAN,access=rw---,values=2
: values=on,on
And the result is:
josef:/usr/src$ amixer sget Line
Simple mixer control 'Line',0
Capabilities: volume pswitch cswitch
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 31
Front Left: 27 [87%] Playback [off] Capture [on]
Front Right: 27 [87%] Playback [off] Capture [on]
The alternative is to turn capture and playback on with scontrol:
josef:/usr/src$ amixer sset Line cap on
Simple mixer control 'Line',0
Capabilities: volume pswitch cswitch
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 31
Front Left: 27 [87%] Playback [on] Capture [on]
Front Right: 27 [87%] Playback [on] Capture [on]
and then muting the playback:
josef:/usr/src$ amixer cset numid=20 off
numid=20,iface=MIXER,name='Line Playback Switch'
; type=BOOLEAN,access=rw---,values=2
: values=off,off
And this is what you get.
josef:/usr/src$ amixer sget Line
Simple mixer control 'Line',0
Capabilities: volume pswitch cswitch
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 31
Front Left: 27 [87%] Playback [off] Capture [on]
Front Right: 27 [87%] Playback [off] Capture [on]
I too would like if sset acted correctly, but it's a problem with
capture route switch.
Take care,
Miha...
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