Same Problem here. It's an Asus A6T Laptop, too. Exactly the same Errors, will try to do hdparm -w. I tried to disable DMA, but I got the same error again.
** Attachment added: "Dmesg output" http://librarian.launchpad.net/7398479/dmesg -- Feisty freeze, kernel (?) tries to access DVD drive https://bugs.launchpad.net/bugs/75295 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