Hi Matt,

Am Samstag, 30. August 2003 22:23 schrieb Matt Garman:

[...]

> However, using the tools cdparanoia and cdrdao cause the non-DMA
> behavior, i.e. CPU usage goes through the roof, the process takes
> forever, typing lags, the mouse is jumpy, etc.  Also, when the
> process is done, hdparm shows that DMA has been turned off for that
> drive!
>
> Does anyone know why DMA mode is forced off for these tools?

This is one of the main problems of the ide-part in the kernel. IIRC, 
the ide-modules cannot handle a sectorsize mod 512 != 0 with dma 
(correct me...). So this is not a problem of cdrecord or cdparanoia. 
Try to copy a data-cd with cdparanoia, this should work with dma 
enabled. If not, try to force a slower dma-mode with hdparm -X.

Kai




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