Re: [gentoo-user] Verification of audio CD copy?

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Tue, Jun 2, 2009 at 8:03 PM, Mark Knecht <markknecht@gmail.com> wrote:
> Hi,
>   I've got a bit of a problem recently with (I think) k3b. Over the
> last couple of months *some* copies of CDs made in k3b using the Clone
> Copy feature do not reliably play in my car's CD player. I've tried
> multiple CD spindles and I've tried burning the copies on two
> different Gentoo machines - one 32-bit and the other 64-bit - with the
> same results. The thing that is VERY strange about this problem is
> that some CDs and all copies of those CDs play fine. For other CDs the
> originals play fine but every copy I make fails, and if they fail,
> they fail using either Gentoo machine to copy them. (Hope that's
> clear....)
>
>   I'm wondering if there is a program that can verify the contents of
> each CD against each other, bit for bit, to identify whether this is a
> problem on all of my computers or whether it's something about my
> car's CD. The strange thing is that the original CDs play fine in the
> car. It's only the copies that sometimes don't, and it's only the
> copies of *some* CDs, not all CDs.
>
>   I've been using these same machine and same car CD player for years
> and everything has always been fine. Now for the last 2-3 months
> nearly 50% of what I copy fails.

I don't think there's a way to do bit-for-bit compare of audio CDs...
if it's a burning issue I would try burning at a slower speed (as slow
as you can tolerate waiting for).

Maybe your car's CD player/laser is dying. Perhaps try taking some old
CDs that you know used to work and see if they still play okay. The CD
player in my car for the past month or so has decided to be unable to
play a CD without skipping like crazy. It is maddening.