Re: no sound from internal mono channel on Aopen MiniPC

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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]
 F! ront 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.

 

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