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Re: hdparm settings



On Tue, 2003-03-11 at 16:51, Felipe Alfaro Solana wrote:
> ----- Original Message ----- 
> From: Arjan van de Ven <arjanv@xxxxxxxxxx> 
> Date: 11 Mar 2003 14:35:09 +0100  
> To: phoebe-list@xxxxxxxxxx 
> Subject: Re: hdparm settings 
>  
> > On Tue, 2003-03-11 at 14:25, james.oden@xxxxxxxxxxx wrote: 
> >>... 
> > before phoebe we defaulted to DMA off for cd(rw) drives because a LOT of 
> > them gave problems. A defect in the kernels ide code has been found and 
> > fixed so now it seems to be mostly ok (with the exception of a blacklist 
> > where the kernel will default to dma off) 
>  
> You mention a fix for ide code... Is that fix applied against 2.4.20-2.54? 
>  
> I have a Pioneer DVD-ROM DVD-500M 010. kernel 2.4.20-2.54 
> enables DMA by default for it. However, after reading some files 
> a few ATAPI errors appear, the ATAPI bus is reset and DMA is disabled. 
>  
> More curiously is that enable IDE-SCSI support for the DVD-ROM 
> and DMA, doesn't cause such errors. Why do errors appear when 
> not using IDE-SCSI? Why they do not appear when using IDE-SCSI? 
>  

please file this in bugzilla

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