CD drive not woking

Please provide the full text of any error message. Just telling "I get an error message" or giving half of the text does not give us enough information to provide help.

Are there any messages about the CD drive in the system logs?

    Error message gives drive number of the CD player and the following
    message:

    "Failed to mount drive. Press S for SKIP and M for manual recovery"
    When I press S the computer resumes boot.
    When I press M I get a message saying" A maintenance shell is being
    set up... Press Control D and the system will restart and check files.

    If I then press M I'm in the terminal - and nothing happens, except
    for a cursor blinking on and off - waiting for text entry?No
    messages re CD drive in system log, only the following error
    message:/var/log/mail.log Error when getting information for
    file '/var/log/mail.log': No such file or directory

    I trust this is helpful
    Many thanks for your response.

    wordsmyth

On 21/08/15 19:01, Manfred Hampl wrote:
> Your question #270622 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/270622
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> Please provide the full text of any error message. Just telling "I get
> an error message" or giving half of the text does not give us enough
> information to provide help.
>
> Are there any messages about the CD drive in the system logs?
>

What is the output of

cat -n /etc/fstab
sudo blkid

On 21/08/15 19:36, Manfred Hampl wrote:
> Your question #270622 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/270622
>
> Status: Open => Needs information
>
> Manfred Hampl requested more information:
> What is the output of
>
> cat -n /etc/fstab
> sudo blkid
wordsmyth@wordsmyth-Aspire-E1-531:~$
wordsmyth@wordsmyth-Aspire-E1-531:~$ cat -n /etc/fstab
      1 # /etc/fstab: static file system information.
      2 #
      3 # Use 'blkid' to print the universally unique identifier for a
      4 # device; this may be used with UUID= as a more robust way to
name devices
      5 # that works even if disks are added and removed. See fstab(5).
      6 #
      7 # <file system> <mount point> <type> <options>
<dump> <pass>
      8 # / was on /dev/sda2 during installation
      9 UUID=126ad958-91ec-45b6-b0fb-06bfb47878af / ext4
errors=remount-ro 0 1
     10 # /boot/efi was on /dev/sda1 during installation
     11 UUID=EB43-19CD /boot/efi vfat defaults 0 1
     12 # swap was on /dev/sda3 during installation
     13 UUID=81a1ad57-f6e6-4f9e-a35d-6c55e85f36d7 none swap
sw 0 0
     14 /dev/disk/by-id/wwn-0x5001480000000000
/mnt/wwn-0x5001480000000000 auto nosuid,nodev,nofail,x-gvfs-show 0 0
wordsmyth@wordsmyth-Aspire-E1-531:~$ sudo blkid
[sudo] password for wordsmyth:
Sorry, try again.
[sudo] password for wordsmyth:
/dev/sda1: UUID="EB43-19CD" TYPE="vfat"
/dev/sda2: UUID="126ad958-91ec-45b6-b0fb-06bfb47878af" TYPE="ext4"
/dev/sda3: UUID="81a1ad57-f6e6-4f9e-a35d-6c55e85f36d7" TYPE="swap"
wordsmyth@wordsmyth-Aspire-E1-531:~$

What is the difference between this question and https://answers.launchpad.net/ubuntu/+question/269721 ?

In the other question three weeks ago I recommended commenting out the line that refers to the CD/DVD drive, but now I see the same line in your /etc/fstab file.

    Hi Manfred: Thanks for your help, but I give up. I've used Ubuntu
    from 8.04 through to the current release, all LTS, and rarely
    experienced a problem. But since installing 14.04 I've been plagued
    with difficulties, often requiring a re-installation - with no
    improvement. And it's still happening. So I'm re-installing reliable
    12.04. If that doesn't fix things - 12.04 was the best ever release
    - then it must be a mis-match with the Acer or whatever. Thanks
    again for your help and patience.

    wordsmyth

On 21/08/15 22:36, Manfred Hampl wrote:
> Your question #270622 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/270622
>
> Status: Open => Answered
>
> Manfred Hampl proposed the following answer:
> What is the difference between this question and
> https://answers.launchpad.net/ubuntu/+question/269721 ?
>
> In the other question three weeks ago I recommended commenting out the
> line that refers to the CD/DVD drive, but now I see the same line in
> your /etc/fstab file.
>

This question was expired because it remained in the 'Open' state without activity for the last 15 days.