slartibartfast wrote:
> I'll try escaping the quotes later. I'm not even sure how I expect this
> to work if I finally do get it working. The E30 has a display indicating
> attenuation when in preamp mode, will that change with the volume?
I'd hope that ALSA driver really drives the h/w control.
You could try using amixer and the "set" command,and see if display
changes.
I did a bit of testing with a cheap USB audio adapter with just
headphone & mic.
Using "aplay -l" - the C-Media device showed up as card 2 with name
"Set" so amixer option to select card 2 is "-c 2" or "-c Set"
Code:
--------------------
minitower:$ amixer -c 2 scontrols
Simple mixer control 'Headphone',0
Simple mixer control 'Mic',0
Simple mixer control 'Auto Gain Control',0
minitower:$ amixer -c 2 scontents
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 151
Mono:
Front Left: Playback 80 [53%] [-13.38dB] [on]
Front Right: Playback 80 [53%] [-13.38dB] [on]
Simple mixer control 'Mic',0
Capabilities: pvolume pvolume-joined cvolume cvolume-joined pswitch
pswitch-joined cswitch cswitch-joined
Playback channels: Mono
Capture channels: Mono
Limits: Playback 0 - 32 Capture 0 - 16
Mono: Playback 23 [72%] [34.36dB] [off] Capture 0 [0%] [0.00dB] [on]
Simple mixer control 'Auto Gain Control',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
minitower:$ amixer -c Set set Headphone 90
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 151
Mono:
Front Left: Playback 90 [60%] [-11.50dB] [on]
Front Right: Playback 90 [60%] [-11.50dB] [on]
--------------------
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