我已经安装了 libdvdcss2，但仍然没有快乐。试过 VLC、mplayer 和默认播放器，都给我错误。Regionset 甚至看不到 DVD。
vlc /dev/sr0：
VLC media player 2.1.4 Rincewind (revision 2.1.4-0-g2a072be)
[0x862118] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
libdvdnav: Using dvdnav version 4.2.1
libdvdnav: DVD Title: NAUSICAA
libdvdnav: DVD Serial Number: 43053257___MVB__
libdvdnav: DVD Title (Alternative):
libdvdnav: Unable to find map file '/home/alex/.dvdnav/NAUSICAA.map'
libdvdnav: DVD disk reports itself with Region mask 0x00fd0000. Regions: 2
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a …