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KDE3 Kmixer and Amixer have no effect on sound volume
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saiyan
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PostPosted: Thu Jul 11, 2002 8:02 pm    Post subject: KDE3 Kmixer and Amixer have no effect on sound volume Reply with quote

Hi all.

I have just installed my first Gentoo Linux system based on the 1.3b file (for GCC 3.1) along with KDE 3.02 and Alsa 0.9.0-rc2. However, I noticed none of the controls (volume, mute, bass, trebel) in either KMixer or Amixer has any effect on the sound output. Therefore, if I want to change volume, treble, or bass, I need to rely on the internal equalizer provided by the media player used.

I did not see any error message when running either KMixer or Amixer. My sound card is a SBLive 5.1 Platinum and I uses its SPDIF line ouput with a external receiver.

Does anyone know what may be wrong with my system setup?

Thanks.
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echu
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PostPosted: Thu Jul 11, 2002 8:47 pm    Post subject: Reply with quote

Mmm, do you have the module pcm-mixer-oss loaded? That might do the trick.
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dasalvagg
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PostPosted: Thu Jul 11, 2002 9:28 pm    Post subject: Reply with quote

do you have the correct permissions on /dev/mixer
i've stumbled on this before...
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saiyan
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PostPosted: Mon Jul 15, 2002 7:00 pm    Post subject: Reply with quote

echu wrote:
Mmm, do you have the module pcm-mixer-oss loaded? That might do the trick.


I tried that but it didn't work.
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saiyan
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PostPosted: Mon Jul 15, 2002 7:02 pm    Post subject: Reply with quote

dasalvagg wrote:
do you have the correct permissions on /dev/mixer
i've stumbled on this before...


What permission is /dev/mixer supposed to have?
I don't remember the permission right now but I'll check when I get home.
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dasalvagg
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PostPosted: Mon Jul 15, 2002 7:59 pm    Post subject: Reply with quote

whatever is necessary to read it...try this just to see if its the problem
Code:
chmod 777 /dev/mixer
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pjp
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PostPosted: Mon Jul 15, 2002 8:03 pm    Post subject: Reply with quote

Are you a member of the audio group? type groups in a terminal to find out (if you don't already know).
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saiyan
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PostPosted: Mon Jul 15, 2002 8:58 pm    Post subject: Reply with quote

kanuslupus wrote:
Are you a member of the audio group? type groups in a terminal to find out (if you don't already know).


Yes, the non-super user login I use is part of audio group. Sound file playback is fine using both root and my own personal login. I know if the login for non-super user is not part of audio group, you can't hear sound at all. My problem is I can't change sound volume, bass, treble, and other channel settings. I am stuck with the default settings which I'm glad did not mute my master or PCM channel.
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dasalvagg
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PostPosted: Mon Jul 15, 2002 9:14 pm    Post subject: Reply with quote

check your /etc/defsd.conf
make sure the lines from the destop config guide are in there...and spelled right.

Quote:

LOOKUP snd MODLOAD ACTION snd
REGISTER sound/.* PERMISSIONS root.audio 660
REGISTER snd/.* PERMISSIONS root.audio 660
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saiyan
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PostPosted: Wed Jul 17, 2002 2:34 pm    Post subject: Reply with quote

After playing with the alsamixer, it appears that it is working for some of the controls. I can adjust volumes for headphone, wave output, aux line-in 2.
But I still don't know why the master volume control has not affect. Line-in 1 (on the back of SBLive card) appears to be muted and I have adjusted all the controls and nothing seems to work so I had to use the aux line-in on the LiveDrive itself.

Does any owner of SBLive 5.1 Platinum knows which alsamixer control will change the volume for line-in 1?

Thanks.
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balor
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PostPosted: Wed Jul 17, 2002 2:43 pm    Post subject: Unmuting channels Reply with quote

I find that I have to

amixer set MASTER 100 unmute
amixer set CD 100 unmute
amixer set PCM 100 unmute

every time I log in so I presume you would have to do somthing like

amixer set LINEIN 100 unmute

to unmute the line in.

Maybe someone knows the correct command instead of LINEIN?
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