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Seems like my CD reader is bricked. This is bizarre, since "eject" and "wodim" (or the GUI equivallent) function: I am able to eject a CD and I am able to burn a CD-R - can't check though as it does not read any CD.

> sudo mount /dev/cdrom /media/cdrom 
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: you must specify the filesystem type

> sudo mount /dev/cdrom /media/cdrom -o ro -t iso9660
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
   missing codepage or helper program, or other error
   (could this be the IDE device where you in fact use
   ide-scsi so that sr0 or sda or so is needed?)
   In some cases useful info is found in syslog - try
   dmesg | tail  or so

> dmesg
sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] Add. Sense: Logical block address out of range
sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
end_request: I/O error, dev sr0, sector 0
sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current] 
sr 1:0:0:0: [sr0] Add. Sense: Logical block address out of range
sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 10 00 00 01 00
end_request: I/O error, dev sr0, sector 64
isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16

I am certain the filesystem is iso9660 (I have an iso copy of this CD as a file and I can mount it as a loop device).

I tried to mount an audio CD, it yields the same errors (same with VLC).

I don't understand what's up with my system.

Any way I can diagnose the problem ?
Fix it ?
Anybody sow similar behaviour before ?

I would love to hear from you.

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Can you give the output of dmesg | tail, please? –  Manuel May 27 '13 at 5:48
1  
Done, edited. I created two CDs, one with wodim, the other with the standard GUI CD Creator (on a Gnome system). I tried both CDs on a Windows machine. One shows content (I thin the GUI created one), the other seems empty (blank). I tried on my Ubuntu 10.04 machine again after a reboot and both CDs are viewed as blanks and can now listen to the audio CD (albeit with lots of errors of the type main input error: ES_OUT_SET_(GROUP_)PCR is called too late, increasing pts_delay to...). I believe something got corrupted and neither session got closed at the end of the creation. –  asoundmove May 28 '13 at 2:24
    
Normal CDs ord DVDs work? So the bought ones? –  Manuel May 28 '13 at 6:04
    
Tried another method for finalising the disk, this method did not work, so started again with fresh CDs. It now works. I think my OS was in a weird state and something was corrupted along the way. –  asoundmove May 31 '13 at 2:19
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1 Answer 1

up vote 1 down vote accepted

System was buggy.

Solved after reboot.

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