My bug appears to be a duplicate of part of this one. It hadn't even occurred to me that my optical drive had stopped working at the same time I found out I could switch AHCI back on.
https://bugs.launchpad.net/ubuntu/+bug/131406/comments/1 -- [Gutsy] No optical device present after installing updates from Tribe 4 https://bugs.launchpad.net/bugs/132751 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs