Re: HDIO_SET_DMA failed: Operation not permitted

From: François Patte (Francois.Patte_at_math-info.univ-paris5.fr)
Date: 05/12/05

  • Next message: Arthur Pemberton: "Video card and tv card recommendations" 
    Date: Thu, 12 May 2005 15:41:45 +0530 (IST)
To: "For users of Fedora Core releases" <fedora-list@redhat.com>

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    On Jeu 12 mai 2005 15:02, John Summerfied a écrit :

    >> I have some problem to read dvd with xine under FC kernel
    >> 2.6.11-1.14_FC3.
    >> According to xine-check, I have to try: hdparm -d1 -X34 /dev/hdc
    >>
    >> But the answer is:
    >>
    >> /dev/hdc:
    >> setting using_dma to 1 (on)
    >> HDIO_SET_DMA failed: Operation not permitted
    >> setting xfermode to 34 (multiword DMA mode2)
    >> using_dma = 0 (off)
    >>
    >> What is the reason? And what can I do to solve the problem?
    >
    > Did you try searching with google, using text from the message, your
    > drive's make/model and maybe with "linux?"

    Got one message: someone has the same drive as me:

    ATAPI CD-ROM, with removable media
    Model Number:
    SONY DVD+/-RW DW-D56A

    he's running suse and the answer is:

    Switch to SUSE's kerned of the day (kotd) 2.6.11.4.
    Then your CD/DVD will be found as an SATA drive and
    will work fine.

    He did it and succeeded.

    > FWIW I never use -X34, partly because I don't see a use for it, partly
    > because the one time I did I had to reboot immediately afterwards.

    This is not the case for me, because the command failed, I presume! But I
    get the same answer with hdparm -d1 /dev/hdc

    Greetings.
    - --
    François Patte
    Ecole française d'Extrême-Orient
    Université Paris 5
    http://www.math-info.univ-paris5.fr/~patte

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