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barvaz
n00b
Joined: 01 Sep 2002
Posts: 8
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 Posted: Sun Sep 01, 2002 9:25 pm Post subject: HELP: /dev/sound/* permissions |
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Hi all,
I have a problem with permissions to /dev/sound/* for any user that is not root.
I did everything that was suggested on these forums: adding the user to audio group, editing /etc/devfsd.conf, chmod 666 /dev/sound/dsp, logging in and out, rebooting.
I always get the same result, user get premission denied for /dev/sound/dsp or any other device under /dev/sound/
Anyone has any idea what is going on ?
Thanks. |
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pilla
Bodhisattva
Joined: 07 Aug 2002
Posts: 7729
Location: Underworld
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| Posted: Mon Sep 02, 2002 12:06 am Post subject: Re: HELP: /dev/sound/* permissions |
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Could you post the snd sessions in /etc/devfsd.conf ?
You can also check if your user is in audio group by running
as the desired user in command line
| barvaz wrote: | Hi all,
I have a problem with permissions to /dev/sound/* for any user that is not root.
I did everything that was suggested on these forums: adding the user to audio group, editing /etc/devfsd.conf, chmod 666 /dev/sound/dsp, logging in and out, rebooting.
I always get the same result, user get premission denied for /dev/sound/dsp or any other device under /dev/sound/
Anyone has any idea what is going on ?
Thanks. |
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barvaz
n00b
Joined: 01 Sep 2002
Posts: 8
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| Posted: Mon Sep 02, 2002 6:19 am Post subject: |
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Yes, "groups" shows that the user is in the audio group.
This is what I have in /etc/devfsd.conf
| Code: |
LOOKUP snd MODLOAD ACTION snd
LOOKUP dsp MODLOAD
LOOKUP mixer MODLOAD
LOOKUP midi MODLOAD
REGISTER sound/.* PERMISSIONS root.audio 666
REGISTER snd/.* PERMISSIONS root.audio 666
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Premissions were originally 660, I changed them to 666 as a possible solution that was suggested somewhere but it didn't help.
ls -l /dev/sound/dsp gives me:
| Code: |
crw-rw-rw- 1 root audio 14, 3 Jan 1 1970 /dev/sound/dsp
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But when when I do "cat /dev/sound/dsp" as the non-root user. I get permission denied.
Thanks. |
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pilla
Bodhisattva
Joined: 07 Aug 2002
Posts: 7729
Location: Underworld
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| Posted: Mon Sep 02, 2002 3:47 pm Post subject: |
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Looks OK, the only difference is that I use 660 (should make no difference)
| barvaz wrote: | Yes, "groups" shows that the user is in the audio group.
This is what I have in /etc/devfsd.conf
| Code: |
LOOKUP snd MODLOAD ACTION snd
LOOKUP dsp MODLOAD
LOOKUP mixer MODLOAD
LOOKUP midi MODLOAD
REGISTER sound/.* PERMISSIONS root.audio 666
REGISTER snd/.* PERMISSIONS root.audio 666
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Premissions were originally 660, I changed them to 666 as a possible solution that was suggested somewhere but it didn't help.
ls -l /dev/sound/dsp gives me:
| Code: |
crw-rw-rw- 1 root audio 14, 3 Jan 1 1970 /dev/sound/dsp
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But when when I do "cat /dev/sound/dsp" as the non-root user. I get permission denied.
Thanks. |
Look if /dev/sound has also the correct permissions.
| Code: |
drwxr-xr-x 1 root root 0 Dec 31 1969 sound
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Are you sure the correct modules for your sound are loaded (or compiled into the kernel)?
Try to test it without window managers... |
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inukshuk
Tux's lil' helper
Joined: 31 Aug 2002
Posts: 110
Location: vienna (europe)
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| Posted: Mon Sep 02, 2002 6:00 pm Post subject: |
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can you play sound as root?
when exactly do you get a permission denied? can you access the devices from command line? i.e. does
| Code: | | cat /path/to/sound/file.wav > /dev/sound/dsp |
produce sound? |
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barvaz
n00b
Joined: 01 Sep 2002
Posts: 8
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| Posted: Mon Sep 02, 2002 10:13 pm Post subject: |
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Seems like the problem was premissions to the /dev/sound directory itself.
It works now ! And I learned something...
Thanks to all who replied. |
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nihil
n00b
Joined: 06 Sep 2002
Posts: 1
Location: Maine
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| Posted: Fri Sep 06, 2002 4:12 pm Post subject: sound permissions |
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| barvaz wrote: | Seems like the problem was premissions to the /dev/sound directory itself.
It works now ! And I learned something...
Thanks to all who replied. |
What did you set the permission to? Did it stick after you rebooted?
I've tried everything sugested here, but I get the same problem when I reboot. |
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kyptin
Tux's lil' helper
Joined: 29 Jun 2002
Posts: 95
Location: UNC (Chapel Hill, NC, USA)
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| Posted: Sun Sep 29, 2002 12:38 am Post subject: permissions should be: |
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I was messing around trying to figure everything out, following everybody's tips and all, yet I still couldn't get it to work. Finally, I realized /dev/sound's permissions were rw, not rwx (maybe I wasn't reading the tips so carefully after all...) Anyway, to sum everything up, do the following (do these as root):
| Code: | cd /dev/sound
chmod 770 .
chown root:audio .
chmod 660 *
chown root:audio * |
Then get a list of the groups for your user by
Note: "users" is (probably) your primary group. Here we're only concerned about the secondary groups. If "audio" is not in that list, then do
| Code: | | usermod -G audio,<grouplist> <username> |
I think that usermod will erase you from your other secondary groups unless you specify all of them. If, for instance, the "groups" output gives
and you do a
| Code: | | usermod -G audio <username> |
then the "groups" output will then be
To fix this, add on all secondary groups + audio after the -G option (as above).
Also check /etc/devfsd.conf as above. Hope this helps! |
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