DVD Won't Load or Run

[leebyy]

cvlc dvd://sr0
VLC media player 2.1.4 Rincewind (revision 2.1.4-0-g2a072be)
[0x207c558] dummy interface: using the dummy interface module...
libdvdnav: Using dvdnav version 4.2.1
libdvdread: Could not open /dev/sr0 with libdvdcss.
libdvdread: Can't open /dev/sr0 for reading
libdvdnav: vm: failed to open/read the DVD
libdvdread: Could not open /dev/sr0 with libdvdcss.
libdvdread: Can't open /dev/sr0 for reading
[0x7f6d3c000e68] dvdread demux error: DVDRead cannot open source: /dev/sr0
[0x7f6d3c000e68] main demux error: Playback failure
[0x7f6d3c000e68] main demux error: DVDRead could not open the disc "/dev/sr0".
[0x7f6d380009b8] main input error: open of `dvd://sr0' failed
[0x7f6d380009b8] main input error: Your input can't be opened
[0x7f6d380009b8] main input error: VLC is unable to open the MRL 'dvd://sr0'. Check the log for details.

any suggestions??

[valtam]

Hello leebyy, open a terminal and do:

Code:

dmesg | egrep -i --color 'cdrom|dvd|cd/rw|writer'