Now I'm trying to mount an UDF formated DVD that is mounted properly. It
is and purchased DVD Video disk. This time everything works as expected.
The disk is mounted and I'm presented with an window asking me what
action I want take next. The default is to open Movie Player.

dmesg output:
...
[  210.525173] UDF-fs: Partition marked readonly; forcing readonly mount
[  210.550422] UDF-fs INFO UDF: Mounting volume 'DVDVolume', timestamp 
2036/02/07 12:58 (1078)

pe...@aurora:~$ cat /etc/mtab
/dev/sda6 / ext4 rw,errors=remount-ro,commit=0 0 0
proc /proc proc rw,noexec,nosuid,nodev 0 0
none /sys sysfs rw,noexec,nosuid,nodev 0 0
fusectl /sys/fs/fuse/connections fusectl rw 0 0
none /sys/kernel/debug debugfs rw 0 0
none /sys/kernel/security securityfs rw 0 0
none /dev devtmpfs rw,mode=0755 0 0
none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0
none /dev/shm tmpfs rw,nosuid,nodev 0 0
none /var/run tmpfs rw,nosuid,mode=0755 0 0
none /var/lock tmpfs rw,noexec,nosuid,nodev 0 0
none /lib/init/rw tmpfs rw,nosuid,mode=0755 0 0
/dev/sda1 /boot ext4 rw,commit=0 0 0
/dev/sda7 /home ext4 rw,commit=0 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0
gvfs-fuse-daemon /home/petar/.gvfs fuse.gvfs-fuse-daemon 
rw,nosuid,nodev,user=petar 0 0
/dev/sr0 /media/cdrom udf ro,nosuid,nodev,utf8,user=petar 0 0

Some forums state that there are different UDF format versions. I've
read complaints that say that UDF formated DVDs created with Vista are
not accessible under Linux/Ubuntu (as Vista uses some specific UDF
format). I don't remember where, but one guy was claiming that newer UDF
formats store some permission settings and that's why some tweaks have
to be made in /etc/fstab have to be made in order to make this kind of
UDF DVDs accesible to normal users (instead of only to the root user???)
I find this an important hint for where to look for when trying to fix
this bug, moreover because I tried accessing the previous mentioned DVDs
with the last line in /etc/fstab removed (as it was on a cleanly
installed Maverick). I'm getting the same end results, and the only
deference is that when the line is removed, the system mounts the DVDs
in some other directory.

This is what i get when I remove the line and insert another UDF DVDs
that is inacessible.

dmesg

...
[   87.355470] UDF-fs: Partition marked readonly; forcing readonly mount
[   87.387023] UDF-fs INFO UDF: Mounting volume '071014_1703', timestamp 
2007/10/14 16:03 (1078)

pe...@aurora:~$ cat /etc/mtab
/dev/sda6 / ext4 rw,errors=remount-ro,commit=0 0 0
proc /proc proc rw,noexec,nosuid,nodev 0 0
none /sys sysfs rw,noexec,nosuid,nodev 0 0
fusectl /sys/fs/fuse/connections fusectl rw 0 0
none /sys/kernel/debug debugfs rw 0 0
none /sys/kernel/security securityfs rw 0 0
none /dev devtmpfs rw,mode=0755 0 0
none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0
none /dev/shm tmpfs rw,nosuid,nodev 0 0
none /var/run tmpfs rw,nosuid,mode=0755 0 0
none /var/lock tmpfs rw,noexec,nosuid,nodev 0 0
none /lib/init/rw tmpfs rw,nosuid,mode=0755 0 0
/dev/sda1 /boot ext4 rw,commit=0 0 0
/dev/sda7 /home ext4 rw,commit=0 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0
gvfs-fuse-daemon /home/petar/.gvfs fuse.gvfs-fuse-daemon 
rw,nosuid,nodev,user=petar 0 0
/dev/sr0 /media/071014_1703 udf 
ro,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,iocharset=utf8,umask=0077 0 0

pe...@aurora:~$ ls -al /media/            
total 14
drwxr-xr-x  4 root  root  4096 2010-09-11 07:25 .
drwxr-xr-x 21 root  root  4096 2010-09-10 04:33 ..
dr--------  4 petar petar  152 2007-10-14 16:03 071014_1703
drwxr-xr-x  2 root  root  4096 2010-09-10 03:58 cdrom
pe...@aurora:~$ ls -al /media/071014_1703/
ls: cannot access /media/071014_1703/.: Permission denied
ls: cannot access /media/071014_1703/..: Permission denied
ls: cannot access /media/071014_1703/AUDIO_TS: Permission denied
ls: cannot access /media/071014_1703/VIDEO_TS: Permission denied
total 0
d????????? ? ? ? ?                ? .
d????????? ? ? ? ?                ? ..
?????????? ? ? ? ?                ? AUDIO_TS
?????????? ? ? ? ?                ? VIDEO_TS
pe...@aurora:~$ sudo -s
r...@aurora:~# ls -al /media/071014_1703/
total 10
dr-------- 4 petar petar  152 2007-10-14 16:03 .
drwxr-xr-x 4 root  root  4096 2010-09-11 07:25 ..
dr-------- 2 petar petar   40 2007-10-06 03:05 AUDIO_TS
dr-------- 2 petar petar 1576 2007-10-06 03:05 VIDEO_TS
r...@aurora:~# ls -al /media/            
total 14
drwxr-xr-x  4 root  root  4096 2010-09-11 07:25 .
drwxr-xr-x 21 root  root  4096 2010-09-10 04:33 ..
dr--------  4 petar petar  152 2007-10-14 16:03 071014_1703
drwxr-xr-x  2 root  root  4096 2010-09-10 03:58 cdrom
r...@aurora:~# cd /media/071014_1703/
r...@aurora:/media/071014_1703# ls
AUDIO_TS  VIDEO_TS
r...@aurora:/media/071014_1703# cd AUDIO_TS/
r...@aurora:/media/071014_1703/AUDIO_TS# ls
r...@aurora:/media/071014_1703/AUDIO_TS# cd ..
r...@aurora:/media/071014_1703# cd VIDEO_TS/
r...@aurora:/media/071014_1703/VIDEO_TS# ls -al
total 4533162
dr-------- 2 petar petar      1576 2007-10-06 03:05 .
dr-------- 4 petar petar       152 2007-10-14 16:03 ..
-r-------- 1 petar petar     18432 2006-08-08 16:40 VIDEO_TS.BUP
-r-------- 1 petar petar     18432 2006-08-08 16:40 VIDEO_TS.IFO
-r-------- 1 petar petar    122880 2006-08-08 16:40 VIDEO_TS.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_01_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_01_0.IFO
-r-------- 1 petar petar 675674112 2006-08-08 14:06 VTS_01_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_02_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_02_0.IFO
-r-------- 1 petar petar 615262208 2006-08-08 14:25 VTS_02_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_03_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_03_0.IFO
-r-------- 1 petar petar 684007424 2006-08-08 15:28 VTS_03_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_04_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_04_0.IFO
-r-------- 1 petar petar 729544704 2006-08-08 15:47 VTS_04_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_05_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_05_0.IFO
-r-------- 1 petar petar 637497344 2006-08-08 16:04 VTS_05_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_06_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_06_0.IFO
-r-------- 1 petar petar 633649152 2006-08-08 16:21 VTS_06_1.VOB
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_07_0.BUP
-r-------- 1 petar petar     22528 2006-08-08 16:40 VTS_07_0.IFO
-r-------- 1 petar petar 665843712 2006-08-08 16:40 VTS_07_1.VOB
r...@aurora:/media/071014_1703/VIDEO_TS# cd ~
r...@aurora:~# umount /media/071014_1703 
r...@aurora:~# ls /media/
cdrom

This time at least the medium is unmountable!

What I'm wondering is, if the fix for this problem should be in tweaking
the DVD drive entry in /etc/fstab or somewhere else.

-- 
Nautilus fails to mount some UDF DVDs properly
https://bugs.launchpad.net/bugs/635499
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