Mac mini, I/O Error on DVD read

[Christophe Delage <christ@ophe.net>]

Hi,

I recently bought a Mac Mini and quickly installed Debian Sarge on it.
However, the kernel do not seem to be able to read DVDs.

mini ~% uname -a                     
Linux mini 2.6.8-powerpc #1 Sun Mar 20 14:09:41 CET 2005 ppc GNU/Linux
mini ~% dd if=/dev/cdrom of=/dev/null
dd: reading `/dev/cdrom': Input/output error
3792+0 records in
3792+0 records out
1941504 bytes transferred in 1.427759 seconds (1359826 bytes/sec)

And this shows up in /var/log/messages :

Nov  1 22:39:51 localhost kernel: hdb: command error: status=0x51 { DriveReady SeekComplete Error }
Nov  1 22:39:51 localhost kernel: hdb: command error: error=0x54
Nov  1 22:39:51 localhost kernel: end_request: I/O error, dev hdb, sector 4040


This is with the stock kernel from Sarge and a DVD in the drive.
Audio CDs, and CD-Roms can be read fine.

Those error message look very much like the description of
CONFIG_IDEDISK_MULTI_MODE, so tried it (on a 2.6.14 vanilla),
but it does not solve the problem.

Could this be a problem with my .config ? the kernel ?

I have no other working DVD drive to check the DVDs themselves (although
a tried severals DVD), and I didn't check the DVD drive under OS X
(which is no longer on the hard drive...), so this could be a hardware
problem, too.

Cheers,
-- 
Christophe Delage