On Fri, Aug 22, 2003 at 10:38:20PM +0300, Scharf Yuval wrote:
> Hello,
> 
> I have a strange problem.
> When I play a music CD in my CD-ROM every now and then (but quiet a lot)
> My CD-ROM stops playing and my HD start working as mad. This can take
> between one second and 4 seconds. I don't think that the HD is really used
> then.
> 
> I don't understand what is the problem. Correct me if I'm wrong by CD
> playing is done by ordering the CD-ROM to send date to the sound card.
> 
> My HD is hda and my CD-ROM is hdc. I also have a CD-burner as hdd but it
> is not working while I listen to music.
> 
> Is it a hardware problem? It is a kernel problem?
> I'm not sure but until two weeks I had Mandrake and I don't think I had
> that problem then. Although I don't use the computer for listening to music so
> much.
> 
> It has nothing to do with quality of the media because it happened with
> both burned and purchased CDs.
> 
> Thanks,
> Yuval Scharf
> 
> 
> 
> 
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> 

Make sure that DMA is enabled on all your drives:

su

emerge hdparm

hdparm -d 1 /dev/hda   # turn dma on (hard disk)
hdparm -d 1 /dev/hdc   # turn dma on (cd)

Also, make sure that the audio from your drive is being sent through the audio 
cable (to your sound card), opposed to the IDE interface.

steve


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