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/dev/dsp can't be opened (no such device) ???

S

slimbim

Senior member
I just installed Red Hat 7.2. I have no sound, and below is the information I get when I first boot and log in:

Sound server informational message:

Error while initializing the sound driver:
device /dev/dsp can't be opened (No such device)

The sound server will continue, using the null output device.


Can anyone help me to resolve this problem so that I can have sound?

Thank you very very much.
 
Your soundcard's module isn't loaded or sndcard isn't supported. Give a little bit more information about your hardware.
 
Thank you for your replay.

I have C-Media CMI8738 on board sound on ECS P6IWP-Fe motherboard. According to Red Hat's hardware compatibility site, this sound chip is supported and compatible. However, no sound. I have tried Mandrake 8.1, and mandrake detected and configured everything perfectly and I had sound right from the start. But I like Red Hat's layout better and it seems a little bit faster, so I wanted to use Red Hat. If there is anyway to fix this, please help. And I downloaded these Red Hat CD's, so I don't think I can get support from Red Hat.
 

I have also tried to change the permissions on the /dev/dsp and /dev/mixer, but the permissions return to the state before change after I reboot. I don't know if that has anything to do with it but......

 
When I run "sndconfig", it will detect the onboard sound chip, and it will say the test audio will now be played. But when I hit ok, no sound, and it will just hang there. No "did the sound play ok?" ever comes up.

I think something is wrong with the /dev/dsp thingy, but I have no clue on what to look at, or how to resolve this problem.


thanks for all your help everyone.
 
From the symptoms you have posted I am assuming you have devfs enabled in your kernel. And it seems it may be giving you problems with the character device for your souncard. Read about devfs under /usr/src/linux/Documentation/filesystems/devfs and do a search with Google with respect to devsd.conf.

Good luck.
 
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