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    SubjectRe: PROBLEM: 2.2.17 hangs when attempting to mount atapi cdrom Teac CD-540E
    On Mon, Oct 02 2000, Serge Gavrilov wrote:
    > [1.] 2.2.17 hangs when attempting to mount atapi cdrom Teac CD-540E
    >
    > [2.] My kernel was compiled with flags
    >
    > CONFIG_BLK_DEV_IDEPCI=y
    > CONFIG_BLK_DEV_IDEDMA=y
    > CONFIG_IDEDMA_AUTO=y
    >
    > My cdrom Teac CD-540E supports UDMA mode2.
    > When I try to mount /cdrom kernel hangs.
    > If I invoke
    >
    > hdparm -d0 /dev/hdc
    >
    > and invoke "mount /cdrom" after, then everything is OK.

    What IDE chipset? Note that not all of them support DMA with ATAPI at
    the moment. And also note that even if your CD-ROM claims to support
    UDMA, it doesn't necessarily mean that it does in reality...

    --
    * Jens Axboe <axboe@suse.de>
    * SuSE Labs
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