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Date: Sat, 31 Jul 2004 13:39:06 -0400 (EDT)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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To: Maxim Sobolev <sobomax@portaone.com>
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Subject: Re: Is there still sufficient reason for hw.ata.atapi_dma being 0
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<<On Sat, 31 Jul 2004 17:51:42 +0300, Maxim Sobolev <sobomax@portaone.com> said:

> Actually it was not looking like underruns. I had weird problems burning 
> RWs at 24x in PIO with three different burners - the burncd process just 
> hanged solidly at random position, only atacontrol reinit helped. 
> Machine was 100% idle (Celeron 2.4GHz). Switching to DMA33 solved the 
> problem.

My Panasonic burner simply refuses to operate without DMA.  It will
(appear to) fail write commands if the transfer is not set up to use
DMA.

-GAWollman