Re: no sound from internal mono channel on Aopen MiniPC

[John Cole]

Tim and everyone, 
 Well, the internal speaker is plugged into the motherboard, but I  don't know how to
set the mixer to address it.  Here is the amixer  output on the system: 
 
Simple mixer control 'Master',0 
 Capabilities: pvolume pswitch pswitch-joined 
 Playback channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Mono: 
 Front Left: Playback 31 [100%] [on] 
 Front Right: Playback 31 [100%] [on] 
Simple mixer control 'Master Mono',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined 
 Playback channels: Mono 
 Limits: Playback 0 - 31 
 Mono: Playback 31 [100%] [on] 
Simple mixer control 'PCM',0 
 Capabilities: pvolume pswitch pswitch-joined 
 Playback channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Mono: 
 Front Left: Playback 30 [97%] [on] 
 Front Right: Playback 30 [97%] [on] 
Simple mixer control 'Surround',0 
 Capabilities: pvolume pswitch 
 Playback channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Mono: 
 Front Left: Playback 0 [0%] [off] 
 Front Right: Playback 0 [0%] [off] 
Simple mixer control 'Surround Jack Mode',0 
 Capabilities: enum 
 Items: 'Shared' 'Independent' 
 Item0: 'Shared' 
Simple mixer control 'Center',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined 
 Playback channels: Mono 
 Limits: Playback 0 - 31 
 Mono: Playback 31 [100%] [on] 
Simple mixer control 'LFE',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined 
 Playback channels: Mono 
 Limits: Playback 0 - 31 
 Mono: Playback 0 [0%] [off] 
Simple mixer control 'Line',0 
 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Playback channels: Front Left - Front Right 
 Capture channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Front Left: Playback 31 [100%] [on] Capture [off] 
 Front Right: Playback 31 [100%] [on] Capture [off] 
Simple mixer control 'CD',0 
 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Playback channels: Front Left - Front Right 
 Capture channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Front Left: Playback 30 [97%] [on] Capture [on] 
 Front Right: Playback 30 [97%] [on] Capture [on] 
Simple mixer control 'Mic',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch  cswitch-exclusive 
 Capture exclusive group: 0 
 Playback channels: Mono 
 Capture channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Mono: Playback 0 [0%] [off] 
 Front Left: Capture [off] 
 Front Right: Capture [off] 
Simple mixer control 'Mic Boost (+20dB)',0 
 Capabilities: pswitch pswitch-joined 
 Playback channels: Mono 
 Mono: Playback [off] 
Simple mixer control 'Mic Front Input',0 
 Capabilities: pswitch pswitch-joined 
 Playback channels: Mono 
 Mono: Playback [off] 
Simple mixer control 'Mic Select',0 
 Capabilities: enum 
 Items: 'Mic1' 'Mic2' 
 Item0: 'Mic1' 
Simple mixer control 'Video',0 
 Capabilities: cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Capture channels: Front Left - Front Right 
 Front Left: Capture [off] 
 Front Right: Capture [off] 
Simple mixer control 'Phone',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch  cswitch-exclusive 
 Capture exclusive group: 0 
 Playback channels: Mono 
 Capture channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Mono: Playback 31 [100%] [on] 
 Front Left: Capture [off] 
 Front Right: Capture [off] 
Simple mixer control 'IEC958',0 
 Capabilities: pswitch pswitch-joined cswitch cswitch-joined 
 Playback channels: Mono 
 Capture channels: Mono 
 Mono: Playback [on] Capture [off] 
Simple mixer control 'IEC958 Playback AC97-SPSA',0 
 Capabilities: volume volume-joined 
 Playback channels: Mono 
 Capture channels: Mono 
 Limits: 0 - 3 
 Mono: 3 [100%] 
Simple mixer control 'IEC958 Playback Source',0 
 Capabilities: enum 
 Items: 'PCM' 'Analog In' 'IEC958 In' 
 Item0: 'PCM' 
Simple mixer control 'PC Speaker',0 
 Capabilities: pvolume pvolume-joined pswitch pswitch-joined 
 Playback channels: Mono 
 Limits: Playback 0 - 15 
 Mono: Playback 15 [100%] [on] 
Simple mixer control 'Aux',0 
 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Playback channels: Front Left - Front Right 
 Capture channels: Front Left - Front Right 
 Limits: Playback 0 - 31 
 Front Left: Playback 31 [100%] [on] Capture [off] 
 Front Right: Playback 31 [100%] [on] Capture [off] 
Simple mixer control 'Mono Output Select',0 
 Capabilities: enum 
 Items: 'Mix' 'Mic' 
 Item0: 'Mix' 
Simple mixer control 'Capture',0 
 Capabilities: cvolume cswitch cswitch-joined 
 Capture channels: Front Left - Front Right 
 Limits: Capture 0 - 15 
 Front Left: Capture 15 [100%] [on] 
 Front Right: Capture 15 [100%] [on] 
Simple mixer control 'Mix',0 
 Capabilities: cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Capture channels: Front Left - Front Right 
 Front Left: Capture [off] 
 Front Right: Capture [off] 
Simple mixer control 'Mix Mono',0 
 Capabilities: cswitch cswitch-exclusive 
 Capture exclusive group: 0 
 Capture channels: Front Left - Front Right 
 Front Left: Capture [off] 
 Front Right: Capture [off] 
Simple mixer control 'Channel Mode',0 
 Capabilities: enum 
 Items: '2ch' '4ch' '6ch' 
 Item0: '2ch' 
Simple mixer control 'Duplicate Front',0 
 Capabilities: pswitch pswitch-joined 
 Playback channels: Mono 
 Mono: Playback [on] 
Simple mixer control 'External Amplifier',0 
 Capabilities: pswitch pswitch-joined 
 Playback channels: Mono 
 Mono: Playback [on] 
 
Perhaps this provides some clues for someone  :-)  
 
Thanks, 
 
John Cole 
 
Tim wrote: 
On Sun, 2006-02-26 at 11:23 -0800, John Cole wrote: 
     I'm trying to get the internal mono sound speaker to work on an 
Aopen MiniPC.  I get sound from the external jack but none from the 
internal speaker. 
 
  Scouring the web, I have performed the modprobe pcpskr and gotten it 
to appear in a lsmod after a reboot.  I have made sure it is not muted 
and the volume is up (among many other combinations  :-)  ) 
 
  The documentation seems to indicate that the internal speaker is a 
mono sound channel, so I don't know if it is supposed to use pcspkr or 
not. 
      
I don't know what the "mono" volume control does (I can't get any effect

from it on my PCs).  If you want the PC speaker/beeper to sound off 
through the sound card, it'll need to be plugged into it somehow.  Some 
sound cards have a header to connect the PC speaker to it, and it's then 
controlled by a "speaker" volume control. 
 
I'm not so sure this is a good idea, though.  Most Linux things don't 
play with the speaker, if they produce a sound they play an audio file 
through the sound system.  The BIOS uses the beeper for important things 
like overheat or fan-stuck warnings, you really do want such alerts to 
be heard, not silenced by your audio mixer settings.

no sound from internal mono channel on Aopen MiniPC

[Tim]

On Thu, 2006-03-02 at 03:08 -0800, John Cole wrote:
>  Well, the internal speaker is plugged into the motherboard, but I
>  don't know how to set the mixer to address it. 
Just to be perfectly clear...

Do you mean that you've plugged the speaker into the speaker output on
the motherboard?  Which means that it, the speaker, should "beep" at
appropriate times, itself.

Or do you mean that you've taken the motherboard's speaker output and
cabled it up to the sound card's speaker input?  Which means that
speaker beeps will come through the sound system just the same as wave
files, and anything else generated by the sound card?

NB:  Even if the sound card is part of the motherboard, you might still
have to play with cables.

-- 
Don't send private replies to my address, the mailbox is ignored.
I read messages from the public lists.

no sound from internal mono channel on Aopen MiniPC

[Mikkel]

Tim wrote:
>  On Thu, 2006-03-02 at 03:08 -0800, John Cole wrote:
>  
> >Well, the internal speaker is plugged into the motherboard, but I
> >don't know how to set the mixer to address it.
>  
>  
>  Just to be perfectly clear...
>  
>  Do you mean that you've plugged the speaker into the speaker output on
>  the motherboard?  Which means that it, the speaker, should "beep" at
>  appropriate times, itself.
>  
>  Or do you mean that you've taken the motherboard's speaker output and
>  cabled it up to the sound card's speaker input?  Which means that
>  speaker beeps will come through the sound system just the same as wave
>  files, and anything else generated by the sound card?
>  
>  NB:  Even if the sound card is part of the motherboard, you might still
>  have to play with cables.
>   
With some motherboards, there is a speaker output from the sound
card that provides a mono output that drives a speaker. It usually
is controlled by the same control that will drive external speakers.
Plugging in an external speaker normally disables this speaker.

Mikkel
-- 

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