I found an older report of this issue (bug #198319) that indicates that this problem is somehow related to grub (switching from lilo to grub caused the problem to appear, switching back made it go away) and that when grub was installed in a dual-boot scenario the drive stops working under Windows as well. This may explain why the old kernels aren't working now but were before.
Also noted there is that if you disable the drive in your bios settings, the drive starts working again. Can you verify this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/856253 Title: CD/DVD drive not detected on Lenovo3000-N200 with ACPI enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/856253/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
