I was experiencing similar problems (same "drive not ready for command" error, and the dvd drive would immediately close whenever I tried to open it, like in https://bugs.launchpad.net/ubuntu/+bug/98806). These problems were not fixed by disabling the cdrom and ide_cd modules. I was also receiving the following message several times per second:
device-mapper: ioctl: unable to remove open device sda6
sda6 does not exist on my system, and never has. I also noticed (in top) that the an evms process, and udevd were popping up repeatedly (presumable polling something). I took a hint from http://kristof.willen.be/?q=node/762, and removed the evms and evms-ncurses packages, and the problem was solved.
I was experiencing similar problems (same "drive not ready for command" error, and the dvd drive would immediately close whenever I tried to open it, like in https:/ /bugs.launchpad .net/ubuntu/ +bug/98806). These problems were not fixed by disabling the cdrom and ide_cd modules. I was also receiving the following message several times per second:
device-mapper: ioctl: unable to remove open device sda6
sda6 does not exist on my system, and never has. I also noticed (in top) that the an evms process, and udevd were popping up repeatedly (presumable polling something). I took a hint from http:// kristof. willen. be/?q=node/ 762, and removed the evms and evms-ncurses packages, and the problem was solved.