Re: DMA problem

[Wes Janzen]

If those options don't work, you might try dropping down the dma mode by 
one.  I have a Maxtor drive that does something like that with my 
Promise PDC20269 when trying to use UDMA 2, but it works fine in UDMA 1.

-Wes-

Andreas Unterkircher wrote:

> Is it possible that your ide-cable can't handle the higher dma speeds
> and makes errors? is it udma compatible? have you looked for a
> firmware update for the burner @ www.plextor.com?
>
> andreas
>
>
> ----- Original Message ----- 
> From: "claude parisot" <Claude.PARISOT@xxxxxxxxxx>
> To: <linux-kernel@xxxxxxxxxxxxxxx>
> Cc: <Claude.PARISOT@xxxxxxxxxx>
> Sent: Friday, January 16, 2004 8:24 PM
> Subject: DMA problem
>
>
>  
>
> >  Hello !
> >
> > Sorry to post a seconfd message on the list, I am only trying
> > to get an answern for this - it seems so - DMA-problem ??
> >
> >
> > I have some
> > problems with a brand new Plextor-drive, PX-W5224TA/T3B, I cannot
> > mount any CD or burn a CDR or CD-RW, except if I disable DMA with
> > following command :# hdparm -d0 /dev/hdd , a little bit annoying,
> > isn't it ?
> >
> > If I insert a cdrom in the drive the led doesn't go out, it flashes
> > as usual but it stays green.
> >
> > It seems to be a DMA-problem or a kernel-bug ???
> > Its only a supposition, I am a Linux-newbie, and I am looking
> > for an explanation and a solution ....
> >
> > By mounting a cdrom I get following error messages :
> >
> > Jan 11 20:46:00 ishwara kernel: scsi : aborting command due to timeout
> > : pid 102, scsi0, channel 0, id 1, lun 0 0x28 00 00 00 00 10 00 00 01 00
> > Jan 11 20:46:00 ishwara kernel: hdd: error waiting for DMA
> > Jan 11 20:46:00 ishwara kernel: hdd: dma timeout retry: status=0x7f {
> > DriveReady DeviceFault SeekComplete DataRequest CorrectedError Index
> > Error } Jan 11 20:46:00 ishwara kernel: hdd: dma timeout retry:
> > error=0x7f Jan 11 20:46:00 ishwara kernel: hdd: DMA disabled
> > Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
> > Jan 11 20:46:00 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
> > Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
> > Jan 11 20:46:00 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
> > Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
> > Jan 11 20:46:07 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
> > Jan 11 20:46:07 ishwara kernel: scsi0 channel 0 : resetting for second
> > half of retries. Jan 11 20:46:07 ishwara kernel: SCSI bus is being reset
> > for host 0 channel 0. Jan 11 20:46:07 ishwara kernel: hdd: status
> > timeout: status=0x80 { Busy } Jan 11 20:46:07 ishwara kernel: hdd: drive
> > not ready for command Jan 11 20:46:07 ishwara kernel: hdd: ATAPI reset
> > complete Jan 11 20:46:32 ishwara kernel: scsi : aborting command due to
> > timeout : pid 103, scsi0, channel 0, id 1, lun 0 0x28 00 00 00 00 10 00
> > rive not ready for command
> >
> > And then I have a freeze or at least a blocking of the sysem.
> > I have to reboot.
> >
> > Could someone give me an explanation of what is happening and a way to
> > solve the problem .... is this a kernel-bug ? Or an incompatibility
> > between the motherboard and the drive ??
> >
> > If you choose to help me, please don't be to esoteric, as I already
> > said, I am a newbie.
> >
> > Please, could you Cc all answers to the adress :
> >
> > Claude.PARISOT@xxxxxxxxxx
> >
> > My apologizes for my english ....
> >
> >
> > Claude
> >
> > System : Pentium 2,8C
> > Asus P4P800 DeLuxe
> > Intel I865PE
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -
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> >
> >
> >    
>
> -
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>  
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