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Old 08-29-2003, 05:48 PM   #1
z536
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Question Sound problem (/dev/mixer permission)


Hi all !

I have the RedHat Linux and Win2000 install3ed on my machine (dual boot). I have no problems listening to CDs under Win2000.
When I try to do it under Linux, Cd player apperas working but I have no sound in headset.

When I attempt to invoke volume control, I have the following message

"Invalid /dev/mixer device"
"unable to open audio device "dev/mixer"
Please check that you have permission to open /dev/mixer
and that you have sound support in your kernel"

My /dev/mixer/ permissions are "crw-------". I try to change it but it didnn't solve the problem. My linux is a standard ReHat 9 installation.

help will be much appreciated
 
Old 08-29-2003, 06:13 PM   #2
DrOzz
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did you try changing as root:
chmod 660 /dev/mixer ?
 
Old 08-29-2003, 06:20 PM   #3
z536
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Unfortunately it didn't help

It didn't help. I've tried chmod 660 /dev/mixer before I posted and just to be sure I've just tried it again now, but I still can't open volume Controls
 
Old 08-29-2003, 06:34 PM   #4
DrOzz
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try:
chmod 660 /dev/dsp* /dev/mixer* /dev/audio*
 
Old 08-29-2003, 06:40 PM   #5
z536
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No luck either

Just did it. Same Error
 
Old 08-29-2003, 06:51 PM   #6
DrOzz
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ok lets ask the question that should of been asked before we went through these couple of steps...
is the sound card installed?
what card do you have?
is the correct module loaded?
 
Old 08-29-2003, 06:59 PM   #7
z536
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StSound Card Detector didn't found soundcard

Hi !

I've just run sound card detector and it didn't found a sound card. The card is obviously there since I can play Cds on the same machine under Win2000.

Should I do any additional step so the sound card will be recognized ?
 
Old 08-29-2003, 07:05 PM   #8
DrOzz
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well since its not installed, then you obviously see now what you have to do, so lets start with the sound card that you do have?
 
Old 08-29-2003, 07:36 PM   #9
z536
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Thumbs up Problem solved. The additional soundcard has been installed

Hi !

The problem has been solved by installing an additional sound card which is recognized and supported by Linux. The original souncard integrated to motherboard for some reason wasn't recognized by Linux. I don't know if it was possible to recognize an original sound card using some tricks and tweaks, but the new one is OK with both OS

Thanks a lot for your help
 
Old 08-29-2003, 07:47 PM   #10
DrOzz
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no problem, as long as that in the end you got sound :P
 
  


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