Public bug reported: Binary package hint: linux-source-2.6.20
This only applies to kernel version 2.6.20-12 and later as far as I can tell. Description: This testing was done on a Mac Pro in a Parallels Desktop (build 3188) for Mac virtual machine set to OS Type: Linux and OS Version: Other Linux kernel 2.6. The issue also happens with OS Version set to Debian. This install was done as Ubuntu Feisty Herd 5 since I am not able to boot Feisty Beta due to the optical drive recognition issue I am describing. When booting the virtual machine from the live cd or a full installation of Ubuntu Feisty Fawn (herd 5 in this case) with the Parallels CD/DVD-ROM set to be the Mac Pro's physical optical drive and set to Connect at startup, the optical drive does not get recognized properly by kernel version 2.6.20-12-generic. Kernel versions 2.6.20-11-generic and 2.6.20-9-generic have been confirmed to work and read the inserted CD properly in the same virtual machine. When I say that the optical drive does not get recognized, I mean that if you open the Computer in Nautilus and double click on CD- ROM 1, the error "Unable to mount the selected volume. mount: special device /dev/hdb does not exist." In earlier kernel versions, the CD drive shows up in the Computer list as CD-RW/DVD+RW and shows up on the desktop after logging in. The optical drive installed in my Mac Pro as reported by Apple is: SONY DVD RW DW-D150A. In Ubuntu, if I right click on the drive in the Computer list, click Properties, and go to the Drive tab, the Model listed is: PRL CD-ROM [1] and Firmware: FMR10003. I assume PRL there stands for Parallels since they virtualize most hardware components in that way. I would blame Parallels for this problem, but I have to claim this is a kernel bug since earlier kernel versions worked flawlessly. Also, note that this issue exists in Fedora 7 as well. Kernel version 2.6.20-1.2933.fc6 in Fedora Core 6 works with the drive just fine. All kernel versions in Fedora 7 test 2 that I have tried (2.6.20-1.2949.fc7, 2.6.20-1.3003.fc7, and 2.6.20-1.3017.fc7) have basically the exact problem I described above. Also note that both the desktop and alternate versions of the Ubuntu Feisty Beta install CD fail to boot on this virtual machine due to the optical drive problem. After hitting enter to begin booting the live CD, some text scrolls and then the usual "ACPI: Unable to locate RSDP" displays followed by "Loading, please wait..." The screen then goes blank to start loading the graphical progress, but remains blank. If you switch the terminal to tty1 by pressing ctrl+alt+F1, you see that "ata2: rest failed, giving up" displayed. After that are a bunch of ata1.01 errors. I am attaching some screenshots to this report to illustrate this. ** Affects: linux-source-2.6.20 (Ubuntu) Importance: Undecided Status: Unconfirmed -- Parallels Desktop for Mac Optical Drive not recognized https://launchpad.net/bugs/95830 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs