Can't play DVD

[Knapp]

On Mon, Jun 1, 2009 at 8:32 PM, Chris Jones
<christopher.rob.jones at cern.ch> wrote:
>
> On 1 Jun 2009, at 7:07pm, Knapp wrote:
>
>>> Sorry, but I don't see anything there that looks like a mounted
>>> DVD. You
>>> should see something of type 'udf', which is the DVD file system
>>> type.
>>> E.g. I get
>>>
>>> /dev/hda on /media/KNIGHT_RIDER_SEASON03_DISC05 type udf
>>> (ro,noexec,nosuid,nodev,sync,uid=173)
>>>
>>> for you it might not be /dev/hda (and the mount point will be
>>> different,
>>> but probabaly still under /media).
>>>
>>> You should also see some messages in 'dmesg' e.g.
>>>
>>>  > dmegs
>>>
>>> <snip>
>>>
>>> UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume
>>> 'KNIGHT_RIDER_SEASON03_DISC05', timestamp 2006/02/27 20:52 (103c)
>>>
>>> <snip>
>>>
>>> Chris
>>
>> That prints up a huge amount of info and only works with sudo. The
>> thing is that the icon pops up on the desktop with the correct name on
>> it. How can that be without mounting?
>
> Can you view the content of the DVD without playing it.
>
>
>> Maybe it is mounting without
>> user permission to view? Where would that be set up?
>
> No, IFAIK, if the DVD is mount 'mount' will list it...
>
> As far as I can tell, your system is not mounting DVDs for whatever
> reason.
>
> Are you running gnome or KDE ? If KDE, I hear others have had problems
> automounting too. Can you try logging in using gnome instead and see
> if it works there ?
>
> Chris

I did that, no go in ether case, same behavior. It will work if I
start X with the disk in the drive. Pop it out and back in and it
fails again.
I just found that if I tell vlc to play the disk it comes up with
device name /dev/hda
if I change it to /dev/scd0 it works!
OK so why does my whole system seem to think that hda is correct?
-- 
Douglas E Knapp

Why do we live?