XPS m1330 Eject button doesn't work.

[x C0MMAND0 x]

Topic, and I have tried this link (https://bugs.launchpad.net/ubuntu/+bug/180866), but it did not work.

[damis648]

Simply add this to /etc/sysctl.conf:

# Unlock the CDROM eject button
dev.cdrom.lock=0

You have to restart for it to take effect.

[x C0MMAND0 x]

After the reboot it worked, thanks. But, now there is still the DVD icon on the desktop, and I can't unmount it because, "no media is in the drive". Is there a workaround for this?