On 03/25/2012 07:37 PM, Joe Zeff wrote:
> On 03/25/2012 11:42 AM, Kevin Fenzi wrote:
>> How are you logging in? gdm? How are you starting X?
>
> Yes, I'm logging in on both computers via gdm and using XFCE. The
> advice I got through fedorafourm.org simply stated that you had to be
> in the audio group to have access to the appropriate devices.
>
> [joe@khorlia Desktop]$ ls -al /dev/snd
> total 0
> drwxr-xr-x. 3 root root 240 Mar 24 22:31 .
> drwxr-xr-x. 18 root root 3980 Mar 23 15:32 ..
> drwxr-xr-x. 2 root root 60 Mar 24 22:31 by-path
> crw-rw----+ 1 root audio 116, 8 Mar 24 22:31 controlC0
> crw-rw----+ 1 root audio 116, 7 Mar 23 15:33 pcmC0D0c
> crw-rw----+ 1 root audio 116, 6 Mar 23 15:33 pcmC0D0p
> crw-rw----+ 1 root audio 116, 5 Mar 24 22:31 pcmC0D1c
> crw-rw----+ 1 root audio 116, 4 Mar 24 22:31 pcmC0D2c
> crw-rw----+ 1 root audio 116, 3 Mar 24 22:31 pcmC0D3c
> crw-rw----+ 1 root audio 116, 2 Mar 23 15:33 pcmC0D4p
> crw-rw----+ 1 root audio 116, 1 Mar 24 22:31 seq
> crw-rw----+ 1 root audio 116, 33 Mar 24 22:31 timer
Sidenote: It may work w/out being in the audio group, since your modes
for those files include a "+".
The "+" means there's an acl on the file, in addition to "standard" Unix
permissions. As someone else mentioned, logging in on the console is
supposed to set up those acl's.
Use the getfacl command to read the acls -- for instance, on this system:
_[/dev/snd]_(scott@eva)_
$ getfacl hwC0D0
# file: hwC0D0
# owner: root
# group: audio
user::rw-
user:scott:rw-
group::rw-
mask::rw-
other::---
The file reads:
crw-rw----+ 1 root audio 116, 10 Mar 22 20:22 hwC0D0
Yes, you could also "fix" a perms problem by dropping the user into the
audio group -- but then, they will always have access to audio, even if
they aren't logged in at the console...which could have security
ramifications for multi-user systems.
-Scott
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