Re: CD problem: hardware or software?

From: Daniel Ramaley (daniel.ramaley_at_DRAKE.EDU)
Date: 07/29/05

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    Date: Fri, 29 Jul 2005 08:55:25 -0500
To: debian-user@lists.debian.org

    On Friday 29 July 2005 08:26 am, Hendrik Boom wrote:
    >On Fri, Jul 29, 2005 at 08:16:06AM -0500, Daniel Ramaley wrote:
    >> I'm running testing on a PowerPC (a Mac Mini to be precise). I have
    >> an external CD drive that i am using to rip my CD collection (i'm
    >> using an external to avoid wear and tear on the more expensive
    >> internal drive). The problem is that after bootup i can rip CDs for
    >> a little while (where "a little while" ranges from 1/2 of a disc to
    >> 10 discs, usually towards the lower end of the range), but then
    >> errors start showing up in dmesg and on the console. The only way to
    >> resume ripping is to reboot the computer; detaching the CD drive,
    >> power cycling the CD, and reconnecting it to the computer doesn't
    >> fix the problem. If i reboot the computer and power cycle the CD
    >> drive, the problem is fixed and i can resume ripping right where i
    >> left off (which implies to me that the problem isn't with the discs
    >> i've been ripping).
    >
    >Could something be overheating? You could perhaps try putting the
    >external drive in the refrigerator for a few minutes, but not long
    > enough that condensation can become a problem. Then take it out and
    > see if it works any longer. It is an external disk, after all.
    >
    >Of course it could be another part overheating, such as the USB
    > interface inside the computer, which is harder to refrigerate.
    >
    >I had problems like this with a video card a while ago. It turned out
    >that one of the cooling fans was clogged with dust and not turning.

    Thanks for the quick response. I'll look into cooling issues with the
    drive, though i suspect that isn't the problem. The external enclosure
    that the drive is in is very new. The cooling fan runs great and isn't
    clogged with dust yet. I can try running it with the lid off to see if
    that makes a difference. The drive itself is a few years old; it is a
    36x that i pulled from a machine at work that we were sending to
    recycling.

    I was actually having the same problem on a different machine running
    the same software, using the same external drive. The other machine was
    a G3 iMac, which shouldn't have heating issues with the USB or Firewire
    interfaces since there is more room for air circulation. So i suspect
    that the problem is either with the external drive or with the
    software.

    ------------------------------------------------------------------------
    Dan Ramaley
    Digital Media Library Specialist
    (515) 271-1934
    Cowles Library 140, Drake University 

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