LinuxQuestions.org - Can't play audio CD!

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Can't play audio CD!

When I try to play an audio CD, both VLC and mplayer complain that it can't open "cdda://".

I made sure that I'm a member of the "optical" group, but still nothing.

apt-get install libcdio-cdda0

Or just install cdda2wav and it should grab the deps as needed. Compact Disc Digital Audio, or something like that. Just guessing at the acronym, aka unverified.

Arch Linux isn't debian-based. It uses it's own custom package manager and format.

Anyway:

Code:

~$ pacman -Ss libcdio

extra/libcdio 0.82-1

    GNU Compact Disc Input and Control Library

~$ pacman -Ss cdda

extra/tcdr 2.1-5

    TCDR is a dialog-based console frontend for mkisofs, cdrecord, cdrdao,

    mkzftree, cdparanoia, cdda2wav, bladeenc, lame, oggenc, ogg123, mpg123, and

    sox written in bash.

community/audex 0.72b1-1

    CDDA extraction tool with a ftp upload function for KDE 4.

I checked and libcdio is installed.

is the user in the audio group? the cdrom group?

$ groups

Does /dev/cdrom exist?

$ ls -l /dev/cdrom

Code:

~$ groups

hal video audio users vboxusers

~$ ls -l /dev/cdrom

lrwxrwxrwx 1 root root 21 Jun  9 09:49 /dev/cdrom -> /dev/cd/cdrom-1:0:0:0

$ grep -i "cd" /etc/group

$ ls -l /dev/cd/cdrom-1:0:0:0

Code:

$ ls -l /dev/cd/cdrom-1:0:0:0

ls: cannot access /dev/cd/cdrom-1:0:0:0: No such file or directory

I have no "cd" group. I do have an "optical" group, though, and /dev/sr0 (my "DVD Burner" drive) belongs to it.

Code:

$ ls -l /dev/cd* /dev/sr*

lrwxrwxrwx 1 root root      21 Jun 10 07:24 /dev/cdrom -> /dev/cd/cdrom-5:0:0:0

lrwxrwxrwx 1 root root      21 Jun 10 07:24 /dev/cdrom0 -> /dev/cd/cdrom-5:0:0:0

lrwxrwxrwx 1 root root      20 Jun 10 07:24 /dev/cdrw -> /dev/cd/cdrw-5:0:0:0

lrwxrwxrwx 1 root root      20 Jun 10 07:24 /dev/cdrw0 -> /dev/cd/cdrw-5:0:0:0

brw-rw---- 1 root optical 11, 0 Jun 10 07:24 /dev/sr0



/dev/cd:

total 0

lrwxrwxrwx 1 root root 6 Jun 10 07:24 cdrom-5:0:0:0 -> ../sr0

lrwxrwxrwx 1 root root 6 Jun 10 07:24 cdrw-5:0:0:0 -> ../sr0

lrwxrwxrwx 1 root root 6 Jun 10 07:24 dvdrw-5:0:0:0 -> ../sr0

lrwxrwxrwx 1 root root 6 Jun 10 07:24 dvd-5:0:0:0 -> ../sr0

Code:

$ cat /etc/group

root:x:0:root

bin:x:1:root,bin,daemon

daemon:x:2:root,bin,daemon

sys:x:3:root,bin

adm:x:4:root,daemon

tty:x:5:

disk:x:6:root

lp:x:7:daemon

mem:x:8:

kmem:x:9:

wheel:x:10:root

ftp:x:11:

mail:x:12:

uucp:x:14:

log:x:19:root

locate:x:21:

rfkill:x:24:

smmsp:x:25:

http:x:33:

games:x:50:

network:x:90:

video:x:91:michael

audio:x:92:michael

optical:x:93:hal,michael

floppy:x:94:hal

storage:x:95:hal

power:x:98:

nobody:x:99:

users:x:100:

dbus:x:81:

hal:x:82:michael

avahi:x:84:

ntp:x:87:

mysql:x:89:

kvm:x:78:

vboxusers:x:101:michael

camera:x:97:

scanner:x:96:

deluge:x:125:

usbmux:x:140:

Yesterday I added myself to the "optical" group and it didn't work. Apperrantly it's because I had log log out and back in, because it works now!

yes, when you change groups settings, you have to relogin to use the new perms. You could just su user i.e. su to yourself to make that happen via the CLI. exit being the equivalent of logging out / undo. Or reboot / relogin / and other means to an end. But it was basically a permissions issue, you weren't in the optical group. Which I guess fixed your problem when you were added and it took effect.