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Old 07-31-2002, 11:02 AM   #1
manojrkrish
LQ Newbie
 
Registered: Jun 2002
Location: UK
Distribution: Mepis3.3, Slackware
Posts: 15

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Thumbs down problems with sound


hey folks,

Hope you can help me out here. I have installed mandrake8.2 on my laptop. With the original install sound worked fine ( i think with alsa), but my usb mouse would not work. So I had to apply a patch and recompile the kernel. I used all the original kernel configuration file so that nothing changes. But now there is no sound. When I try to change anything in the kde control center -> sound server settings and apply the changes I'm prompted to restart the sound server. When I say yes I get a number of messages. I have listed them below

device: /dev/dsp can't be opened (invalid argument) Sound server will continue, using the null output device

can't set real-time scheduling priority. You need to run artswrapper as root or setuid root.

Sound server suspended.

PS: on my m/c dev/dsp is actually a symbolic link to /dev/sound/dsp.


I think the sound card I have is i810_audio (intel chipset)

I have no idea about what is happening. I've tried everyting I can with my limited knowledge and nothing works. I have searched this forum for similar problems and none of the solutions works. I'm quite stumped. Please help me.

 
Old 07-31-2002, 06:43 PM   #2
Thymox
Senior Member
 
Registered: Apr 2001
Location: Plymouth, England.
Distribution: Debian + Ubuntu
Posts: 4,358

Rep: Reputation: 57
Well, as it stands, there are two main camps for sound... OSS (the 'original' ones, developed in conjunction with the main kernel) and the ALSA (Alternative Linux Sound Architecture... a different one). Mandrake seems quite happy to use Alsa as per default, but this can make things more confusing than is necessary when upgrading the kernel.

When you recompiled your kernel, did you include support for sound as a module? Did you specifically include support for your soundcard? If so, and presuming that it is an i810, then as root type modprobe i810_audio and see what happens. If you're not given any error message, try playing a sound file manually (i.e. find a suitable sound file, and type cat soundfile > /dev/dsp[). If this works, then you're in luck and the problem should be quite easy to sort (it just means editing a file and adding a line... more on that in a later post). If it didn't work, then you have to ask yourself... am I sure that my USB mouse isn't supported? The easy way to sort this, presuming that the above didn't work and that subsequently you find that your USB mouse does work, is to re-install Mandy and sort the mouse.

First things first, try the above (modprobe) and report back here.

Good luck.
 
Old 08-01-2002, 05:50 AM   #3
manojrkrish
LQ Newbie
 
Registered: Jun 2002
Location: UK
Distribution: Mepis3.3, Slackware
Posts: 15

Original Poster
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it works!!!

Thanks for ur help. I didn't have to do too much though. I just changed the system from ALSA to autodetect and it works now. Haven't tried after rebooting the system. I did manually chmod /dev/sound/dsp to 666, but i noticed that after reboot it reverts back to it old value. Will get back here if it fails to work after a reboot.

Cheers
 
Old 04-11-2003, 05:07 AM   #4
linuxfond
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Registered: Jan 2003
Location: Belgium
Distribution: Mandrake 9.2
Posts: 475

Rep: Reputation: 30
Hi, I upgraded from mdk 9.0 to mdk 9.1
and the sound is gone.


# modprobe i810_audio
/lib/modules/2.4.21-0.13mdk/kernel/drivers/sound/i810_audio.o.gz: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
You may find more information in syslog or the output from dmesg
modprobe: insmod /lib/modules/2.4.21-0.13mdk/kernel/drivers/sound/i810_audio.o.gz failed
modprobe: insmod i810_audio failed

Fine, but how do a newbie fix that?
 
  


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