[Bug 1577768] Re: 16.04 some dvd do not mount automatically (but do in 14.04)

[Bougron]

*** This bug is a duplicate of bug 1584509 ***
    https://bugs.launchpad.net/bugs/1584509

So it it necessary to do this command

sudo mount   /dev/sr0    /mnt

and seeing the contents

u1604 at u1604:/mnt$ ls -l
total 31
dr-xr-xr-x 3 root root  2048 avril  3  2012 boot
dr-xr-xr-x 2 root root  2048 avril 21  2014 casper
dr-xr-xr-x 2 root root 18432 avril 10  2012 isolinux
-r--r--r-- 1 root root  8381 avril 21  2014 md5sum.txt
u1604 at u1604:/mnt$

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https://bugs.launchpad.net/bugs/1577768

Title:
  16.04 some dvd do not mount automatically (but do in 14.04)

Status in gvfs package in Ubuntu:
  Invalid
Status in nautilus package in Ubuntu:
  Invalid
Status in util-linux package in Ubuntu:
  Fix Released

Bug description:
  Hi,

  here is a dvd. And ubuntu 16.04.

  When I insert that dvd, it does not show anywhere, neither in launcher
  nor in nautilus.

  But I'm able to read that dvd using vlc through menu media / open a
  disc.

  I can manually mount that dvd with

  sudo mount -t iso9660 -o ro /dev/sr0 ~/Bureau/dvd/

  Once mounted there's a dvd icon in launcher and it appears also in
  nautilus left panel.

  That same dvd automatically mounts when running ubuntu 14.04 on the
  same computer.

  I have also tested other dvd's on ubuntu 16.04 and *most* of them show
  / mount as expected.

  But *all* of them automatically show / mount in ubuntu 14.04.

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