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Thread: Cd/DVD drive not recognized

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  1. #1
    Join Date
    Dec 2009
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    6

    Cd/DVD drive not recognized

    After upgrading from Ubuntu 9.04 my dvd drive/burner is no longer recognized. Im running a laptop. If I start the computer the drive doesnt even appear. If i start the computer with a disc in the drive the drive shows up as cdrom0. However, no cd burner software will let me burn a disc and the disks dont play. If you click on the cdrom0 it generates an error that states: "special device dev/scd0 does not exist" Im a total noob with ubuntu, so if someone could give me advice on what steps I should do to narrow down this problem, or if there is a fix, id greatly appreciate it. Thanks.

  2. #2
    Join Date
    Jan 2009
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    Re: Cd/DVD drive not recognized

    please post the output of:
    Code:
    sudo lshw -C disk
    and
    Code:
    cat /etc/fstab

  3. #3
    Join Date
    Dec 2009
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    6

    Re: Cd/DVD drive not recognized

    lshw -C disk:

    *-cdrom
    description: DVD-RAM writer
    physical id: 0.0.0
    bus info: scsi@2:0.0.0
    logical name: /dev/cdrom
    logical name: /dev/cdrw
    logical name: /dev/dvd
    logical name: /dev/dvdrw
    logical name: /dev/scd0
    logical name: /dev/sr0
    capabilities: audio cd-r cd-rw dvd dvd-r dvd-ram
    configuration: status=open
    *-disk
    description: ATA Disk
    product: ST9120822AS
    vendor: Seagate
    physical id: 0.0.0
    bus info: scsi@0:0.0.0
    logical name: /dev/sda
    version: 3.BH
    serial: 5LZ5F6CK
    size: 111GiB (120GB)
    capabilities: partitioned partitioned:dos
    configuration: ansiversion=5 signature=ce5973cb

    cat /etc/fstab:


    # /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point> <type> <options> <dump> <pass>
    proc /proc proc defaults 0 0
    # / was on /dev/sda1 during installation
    UUID=b52667ac-98de-446e-b109-4d1145035c90 / ext4 errors=remount-ro 0 1
    # swap was on /dev/sda5 during installation
    UUID=2fc8986d-6ef3-457a-ba27-807b1ac0c4c7 none swap sw 0 0
    /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

  4. #4
    Join Date
    Dec 2009
    Beans
    6

    Re: Cd/DVD drive not recognized

    Bump.

  5. #5
    Join Date
    Jan 2009
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    Hidden!

    Re: Cd/DVD drive not recognized

    hi, the fstab entry looks ok, but the lshw output doesn't tell about the manufacturer of the drive (i don't know if it makes a difference though).

    anyway, while searching the forums i found that adding the option
    Code:
    noapic acpi=off
    to the kernel parameters has solved this problem for some people.

    try passing this option to grub, before booting. and if it works, you can make permanent change to your grub.cfg file.
    Last edited by x33a; December 20th, 2009 at 02:13 AM.

  6. #6
    Join Date
    Dec 2009
    Beans
    6

    Re: Cd/DVD drive not recognized

    That didn't fix it. Same exact problem. Any other suggestions?

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