Oops when Sony USB dvdrw is disconnected

From: Thomas H. George (xyz_at_spininternet.com)
Date: 05/31/05

  • Next message: Jose Luis Marin: "nfs-common in sarge (Re: erroneous SM_UNMON request)" 
    Date: Tue, 31 May 2005 11:23:43 -0400
To: debian-user@lists.debian.org

    Only my Sony DRX-510UL USB dvdrw drive is a problem.

    I am using hotplug and can disconnect and reconnect jumpdrives and other
    USB devices with no problems.

    If I shutdown the system or disconnect the Sony drive I get the
    following messages:

        SCSI: Device offlined - not ready after error recovery: host 0
    channel 0 id 0 lum 0
        sr 0:0:0:0: Illegal state transition cancel -> offline

    followed by a bunch of BAD messages and then a kernel Oops.

    I have lived with this problem for some weeks since so long as I don't
    shut down the system or unplug the device it is working perfectly with
    both cdparanoia and cdrecord as /dev/sg0.

    I have posted this problem twice previously and have received no
    responses. If I am way off base I will continue to live with the
    problem but I do need to shut down my system occasionally - today to
    install a kernel built from the latest kernel-source-2.6.8 release and
    this evening when my grandson wants windows to play his computer game.
    After each Oops fsck must be run on all the partitions to repair the
    damage. I can avoid the problem by falling back on a 2.4.26 kernel
    which has no diffilculty with the Sony device but then I have only USB1
    connections.

    As noted in the previous postings the Oops is avoided if I install
    discorvey or discovery1 but

        If discovery is installed there is no mount point for the device!

        If discovery1 is installed the mount point is /dev/sr0 and the
    device can only be mounted to read data cd's.

    If anyone has any suggestions as how to correct the problem or what
    references I should read to understand it I would greatly appreciate the
    help.

    Tom George 

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