Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have intalled Ubuntu 12.04 on my Acer laptop and the problem with the unit of CD/DVD is that it do not reduce the speed of reproduction. In other vertions of Ubuntu this probles was solved with "reduce the speed of the disks when is posible" (or, at least, this option solved the problem for me)but in this vesrsion it is not possible. When I reproduce a DVD picture, the noise of the unit isself and the vibration donẗ allow to hear the sound of the picture. I have tried with VLC reproducer but this is not a solution beause even when I reduce the "speed of reproduction" in the tools of VLC, the sound is distorted but the speed remain the same.

share|improve this question

Use this command:

hdparm -E 4 /dev/cdrom1

where /dev/cdrom1 is your cd/dvd device (may be different) and 4 is the actual speed (in this example 4x).

share|improve this answer

For handling speed of optical drive use eject

eject -x <speed_number>

for eg eject -x 4 for 4x speed
edit the number 4 for your own speed
By definitoin: Eject allows removable media (typically a CD-ROM, floppy disk, tape, or JAZ or ZIP disk) to be ejected under software control. The command can also control some multi-disc CD-ROM changers, the auto-eject fea‐ ture supported by some devices, and close the disc tray of some CD-ROM drives.


share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.