Try" sudo mount /media/cdrom0" to get a error message, and then "dmesg|tail".
Prehaps duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/106910, there were problem with CD at UDF standard. -- The system doesn't recognise and auto-mount cdrom when cd was burned in Windows. https://bugs.launchpad.net/bugs/377373 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs