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Bug#605210: linux-image-2.6.32-5-amd64: cdrom stops working

Hi Boris,

Boris Barbour wrote:

> If a cdrom is inserted, things work for a short while. I can for instance read one or two 
> files on the CD. But, invariably, it stops working and a number of error messages are logged.
> Typical messages are:
> [  446.575346] ata6.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
> [  451.728172] ata6.01: failed to IDENTIFY (I/O error, err_mask=0x5)
> [  492.197355] VFS: busy inodes on changed media or resized disk sr0
> (Then quite a few more of these. They continue after the cd has been reomved.)
> I have tried another drive and get the same errors, so I don't think the problem is 
> related to the drive itself. A harddisk is attached to the same controller, making 
> a controller error a little less likely.
> The problem has been around for a while. Less than a year, but certainly for several 
> kernel versions.

Was this a regression?

I think our best bet for this is to get help from upstream.  So:

 - Please try the latest kernel available from squeeze.  If it works, we
   can declare victory (yay!).  Otherwise, the next step would be:

 - To try a 3.x.y kernel from sid or experimental.  The only packages
   needed from outside squeeze in order to do this are the kernel
   image itself, linux-base, and initramfs-tools.

   If it exhibits the same problem, we can forward this upstream.

 - Otherwise, could you try a few kernels halfway between from
   <http://snapshot.debian.org/> to narrow down when the fix was
   introduced?  Once we find a relevant patch, we can try applying
   it to squeeze.

Thanks for reporting, and sorry for the very slow response.


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