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    SubjectRe: DMA problem
    Date
    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@wanadoo.fr>
    To: <linux-kernel@vger.kernel.org>
    Cc: <Claude.PARISOT@wanadoo.fr>
    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@wanadoo.fr
    >
    > My apologizes for my english ....
    >
    >
    > Claude
    >
    > System : Pentium 2,8C
    > Asus P4P800 DeLuxe
    > Intel I865PE
    >
    >
    >
    >
    >
    >
    >
    >
    >
    >
    >
    >
    >
    > -
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