Don't know if this is OS related but I'll ask anyway.
In my media server at home, running Ubuntu 10.04 LTE server edition, I'm having trouble ejecting/opening the DVD tray when the machine is operating under the OS's control. When at the BIOS menu or halted at the grub menu you can open and close the tray to your hearts content via the drive's eject button. Once booted into the OS it becomes almost impossible to do when the drive is empty. I've taken to keeping an old CD in the drive as a work around as when the tray is occupied it will eject without issue, from the button or via the eject command.
I have tried two other drives of similar model and they behave in the same way and all three drives operate as expected when placed into a Windows box.
Of course what I don't have to hand as write this (not being in the same place as the server) is the exact model and firmware details other than to say they are Lite-on DVD-RW drives. In all other respects they operate normally.
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Colin Fee
tfeccles@gmail.com