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    SubjectRe: 2.3.43: IDE CD mount(8) hangs; ditto SysRq

    On Sat, 12 Feb 2000, Horst von Brand wrote:

    > Sorry, but from the moment I got this machine (2.3.20 or so) 2.3.x gave
    > severe filesystem corruption on it. I tried several 2.3.x on and off, the
    > first one I tried that was stable enough for any use was 2.3.42aa2. It has
    > the same problem. I don't remember for sure if I tried 2.3.x before with
    > CDs (I had other worries :).
    > 2.2.15pre6 and 2.3.42aa3 gave:
    > kernel: hdd: ide_wait_noerr: status=0x51 { DriveReady SeekComplete Error }
    > kernel: hdd: ide_wait_noerr: error=0xb4
    > kernel: hdd: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error }
    > kernel: hdd: set_drive_speed_status: error=0xb4
    > kernel: hdd: ATAPI 40X CD-ROM drive, 128kB Cache, DMA
    > kernel: Uniform CD-ROM driver Revision: 3.06
    > (Revision 2.56 doesn't give any of this nonsense)

    Translation of "this nonsense"......

    Your CDROM can not handle the full throttle auto-tuning, the is a problem
    with the device's firmware or other hardware. If your drive behaved well
    and responded correctly to the active-hardware correction of the BIOS
    settings, it would have never barffed the message.

    > It is identified as CRD-8400C, ATAPI CDROM drive, alone on ide1.

    It most likely belongs on a capablities list of short comings.

    Andre Hedrick
    The Linux ATA/IDE guy

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