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DVD drive not detected

Anyone have any ideas why a DVD drive that works perfectly isn't detected by openSUSE 11.4 x86_64? Yesterday I downloaded the net install CD, burnt it, and used it. It worked perfectly, but the DVD drive isn't detected. dmesg gives some obscure error, and there is no device for it in /dev. It still works perfectly from within Windows or before booting to openSUSE. It was working fine in Fedora a few days ago. The drive is a LG GH22LS50 (SATA) on one of the SATA3 ports on my GA-P67A-UD3R motherboard.
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  1. Best answer
    Well, the obvious first step in troubleshooting would be to move the drive to one of the SATA 2 ports. It's not as if data transfer rate is a big deal with a DVD drive.

    And it might help if you could actual reproduce that obscure dmesg error here. It may be less obscure to some of the geniuses who hang around this forum.
  2. dmesg output:
    [cpp][ 1.528777] ata2.00: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
    [ 1.528789] ata2.01: SATA link down (SStatus 0 SControl 300)
    [ 1.528798] ata2.01: link offline, clearing class 3 to NONE
    ...
    [ 1.547690] ata2.00: ATAPI: HL-DT-ST DVDRAM GH22LS50, TL03, max UDMA/100
    [ 1.569735] ata2.00: configured for UDMA/100
    [ 1.670058] ata2.00: TEST_UNIT_READY failed (err_mask=0x2)
    ...
    [ 7.288624] ata2.00: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
    [ 7.288640] ata2.01: SATA link down (SStatus 0 SControl 300)
    [ 7.288652] ata2.01: link offline, clearing class 3 to NONE
    [ 7.329718] ata2.00: configured for UDMA/100
    [ 12.328708] ata2.00: qc timeout (cmd 0xa0)
    [ 12.328712] ata2.00: TEST_UNIT_READY failed (err_mask=0x4)
    [ 12.328716] ata2.00: limiting SATA link speed to 1.5 Gbps
    [ 12.328719] ata2.00: limiting speed to UDMA/100:PIO3
    [ 13.089637] ata2.00: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 13.089653] ata2.01: SATA link down (SStatus 0 SControl 300)
    [ 13.089665] ata2.01: link offline, clearing class 3 to NONE
    [ 13.130669] ata2.00: configured for UDMA/100
    [ 18.129667] ata2.00: qc timeout (cmd 0xa0)
    [ 18.129671] ata2.00: TEST_UNIT_READY failed (err_mask=0x4)
    [ 18.129673] ata2.00: disabled
    [ 18.129692] ata2.00: hard resetting link
    [ 18.434597] ata2.01: hard resetting link
    [ 18.890575] ata2.00: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 18.890591] ata2.01: SATA link down (SStatus 0 SControl 300)
    [ 18.890604] ata2.01: link offline, clearing class 3 to NONE
    [ 18.890610] ata2: EH complete[/cpp]
    By obscure (with reference to "TEST_UNIT_READY failed"), I meant that a Google brought very few results.

    I was intending to try one of the SATA2 ports, but hadn't got around to it yet. I will do so soon.
  3. Well, I tried with the SATA2 ports, and it works fine. That is nice, but I wanted it to work on the SATA3 ports because of the chipset bug. I guess it doesn't matter, as I'll be getting a replacement within a few days.
  4. I Googled that error message and it's a known problem with some SATA 3 ports. Anyway, glad it's now working.
  5. Best answer selected by PreferLinux.
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