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Unable to umount CD's or DVD's
http://forum.linhes.org/viewtopic.php?f=2&t=4651		 Page 1 of 1
Author:  junoreactor [ Sat May 21, 2005 4:12 pm ]
Post subject:  Unable to umount CD's or DVD's
Hi,
I have the following problem : when I insert a CD or DVD in my DVD drive, I can't unmount it while MythTv is running. However, everything plays right : Audio CD's, DVD Movies, and so on. But I can't change CD's or DVD's. I have to turn off Mythtv, open a console and type as root "umount /cdrom".
I have tried to change rights on /dev/dvd by typing : chown mythtv:mythtv /dev/dvd, but no change. Has anybody got an idea ? Many thanks.
My -rather poor-MythBox : Pentium III 500 Mhz, 256 Mo SDRAM, 20 GO HD, a Samsung DVD Drive, a WinTV PVR350, a NVidia GeForce 2Mx400 w/TV Out, on a Packard Bell Desktop PC. I'm enjoying MythRV R15A15.1. A lot of congratulations for this hard work, all you guys !
Author:  tjc [ Sat May 21, 2005 5:56 pm ]
Post subject:  Re: Unable to umount CD's or DVD's
junoreactor wrote:
I have tried to change rights on /dev/dvd by typing : chown mythtv:mythtv /dev/dvd, but no change. Has anybody got an idea ?

/dev/dvd is just a symlink not a real device, you would need to change the device it's pointing to for it to have any effect. That said you don't really want to do it this way. Here are what the right settings look like:
Code:
root@black:~# ls -al /dev/dvd /dev/hdc
lrwxrwxrwx  1 root cdrom     8 Apr 30 14:36 /dev/dvd -> /dev/hdc
brw-rw----  1 root cdrom 22, 0 May  7  2004 /dev/hdc
root@black:~# grep cdrom /etc/group
cdrom:*:24:mythtv

BTW - If running "grep mythtv /etc/passwd" shows more than one line you screwed up at install time and created an extra mythtv user.
Author:  junoreactor [ Sun May 22, 2005 12:44 pm ]
Post subject: 
tjc,
thanks for your reply.
I tried as root 'ls -al /dev/dvd /dev/hdc'. That's what I got :
lrwxrwxrwx 1 root root 8 May 18 21:26 /dev/dvd -> /dev/hdc
brw-rw---- 1 root cdrom 22, 0 May 7 2004 /dev/hdc
As you may see, it's about the same as yours.
Then I typed 'grep cdrom /etc/group '
And I have :
cdrom:*:24:mythtv,blanchetjp
where 'blanchetjp' is another user I created at install time.
By the way 'grep mythtv /etc/passwd' shows only one line. I didn't create an extra mythtv user (aka mythtv/mythtv).
All this doesnt change things. With mythtv running I cannot open DVD drive to change a DVD or CD. :(
What do you think about this ?
Anyway thanks!
Jp
Author:  junoreactor [ Wed May 25, 2005 1:40 pm ]
Post subject: 
Any idea ??? I'm still seeking for a solution :cry:
Author:  iscraigh [ Wed May 25, 2005 2:09 pm ]
Post subject: 
I seem to recall having that problem. In one of the setup screens you can tick a box for auto detect cd drive (or something like that)
try unticking it that worked for me.

Craig
Author:  tjc [ Wed May 25, 2005 6:09 pm ]
Post subject: 
Whoops, sorry, I meant to get back to you on that after i checked on things that would cause automounting to be enabled, since after eliminating the other issues, it sounded like the most likely cause to me.

Having the magic detection running is certainly a good candidate for the source of your problem.
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