can't play audio CD when I'm not root

yukie · 06-12-2006, 06:23 AM

well the thread title pretty much says it all. All my cd players behave as if there was no cd in the drive whenever I'm not root. below is my fstab.

Code:

/dev/hda5        swap             swap        defaults         0   0
/dev/hda2        /                ext2        defaults         1   1
/dev/hda6        /usr             ext2        defaults         1   2
/dev/hda7        /opt             ext2        defaults         1   2
/dev/hda8        /home            ext2        defaults         1   2
/dev/hda1        /mnt/windows     ntfs        ro               1   0
/dev/cdrom       /mnt/cdrom       auto        noauto,owner,ro  0   0
/dev/fd0         /mnt/floppy      auto        noauto,owner     0   0
devpts           /dev/pts         devpts      gid=5,mode=620   0   0
proc             /proc            proc        defaults         0   0

Nylex · 06-12-2006, 06:25 AM

Is your user account in the cdrom and audio groups? Look in /etc/group to find out.

worzel68 · 06-12-2006, 06:32 AM

yukie,

Quote:

/dev/cdrom /mnt/cdrom auto noauto,owner,ro

this line shows the option "owner", which means only the owner can mount that device.

You can change this to user, which will allow any user to mount the device.

Also check the permissions on /dev/cdrom - it is probably owned by root.

Check out the man page for mount.

Enjoy your audio experience.

yukie · 06-12-2006, 06:37 AM

Quote:

this line shows the option "owner", which means only the owner can mount that device.

You can change this to user, which will allow any user to mount the device.

ok, just did this, but it didn't seem to help.

Quote:

Also check the permissions on /dev/cdrom - it is probably owned by root.

yeah, it looks like it is owned by root. An ls -l /dev/cdrom gives:

Code:

lrwxrwxrwx  1 root root 8 2006-06-09 04:14 /dev/cdrom -> /dev/hdb

so, do i change ownership?

thanks.

EDIT:

by the way, /etc/group/ contains

Code:

.
,
.
audio::17:
.
.
.
cdrom::19:

are those numbers user ids or group ids? in any case I don't seem to be there, my id is 1000.

Nylex · 06-12-2006, 06:39 AM

Changing "owner" to "user" (or "users") in your fstab won't help with audio CDs, because you don't mount those..

yukie · 06-12-2006, 06:48 AM

ok I already added myself to the audio and cdrom user groups, but the problem persists...

worzel68 · 06-12-2006, 07:09 AM

Quote:

/dev/cdrom /mnt/cdrom auto noauto,owner,ro

As Nylex says - the noauto means that the device isn't automatically mounted at boot time.

But changing this won't do anything if there is nothing in the cd drive, so you have to do both of the folowing:

Quote:

/dev/cdrom /mnt/cdrom auto noauto,user,ro

and

Quote:

mount /mnt/cdrom

the mount command works like this because the info it needs is in /etc/fstab.

Read the man page for mount - don't forget to use umount to get your CD back !!

yukie · 06-12-2006, 07:16 AM

thanks all for your suggestions, but I found a solution in a different thread. turns out i needed to add myself to the 'disk' and 'sys' usergroups.

just curious, though... honestly i feel this solution is a bit overkill. I didn't think I had to add myself to 'sys' just so I can play audio cds, but it works so what the heck.

thanks again.