IDE DMA Blacklist?

[Bob Nielsen]

On Sun, Jan 02, 2005 at 09:08:12PM -0800, Daniel Robitaille wrote:
> > > Since I know that DMA works on that drive under Warty, is there a way
> > > to override or modify that blacklist?
> > 
> > The blacklist lives in $kernel_source/drivers/ide/ide-dma.c but I
> > wouldn't recommend changing that table in the first instance. There
> > might be a kernel parameter for this.
> 
> I'm not planning in recompiling by kernel just for this.  I have 2 cd-drives
> in that machine, and the other one's dma works fine (and it's a newer
> drive anyway).  But it's a slight annoyance
> in the transition from Warty to Hoary.  I should probably report it in
> the bugzilla.
> 

Have you tried using 'hdparm -d1' to force DMA?