Lire un dvd sous linux

Bonjour,
j'essaye de lire un dvd avec vlc, et voici l'erreur kil me retourne; quelqu'un peut-il m'aider?merci

eudes@eudes-desktop:~$ vlc /dev/hdb
VLC media player 0.8.6c Janus

** (.:8566): CRITICAL **: gtk_pizza_set_size: assertion `pizza != NULL' failed
libdvdnav: Using dvdnav version 0.1.10 from http://dvd.sourceforge.net/
libdvdread: Using libdvdcss version 1.2.9 for DVD access
libdvdnav: DVD Title: THE_EXORCIST_2000
libdvdnav: DVD Serial Number: 2A949878
libdvdnav: DVD Title (Alternative): THE_EXORCIST_2000
libdvdnav: Unable to find map file '/home/eudes/.dvdnav/THE_EXORCIST_2000.map'
libdvdnav: DVD disk reports itself with Region mask 0x00fd0000. Regions: 2

libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x000a3260
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x000a3872
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x000a502f
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x003b0dbf
libdvdread: Elapsed time 0
libdvdread: Found 2 VTS's
libdvdread: Elapsed time 0
libdvdnav: ifoRead_TITLE_VOBU_ADMAP vtsi failed - CRASHING
vlc: vm.c:218: ifoOpenNewVTSI: Assertion `0' failed.
Aborted (core dumped)