On 1/20/2010 1:23 AM, greg wm wrote:
> How about 'strace -eopen alsamixer'. Is there anything alsamixer is
> unable to load? Try as root too, you may be missing a user group. There
> looks to be a bundle of information on the Ubuntu forums about this as
> well so that may be a good read too.
>
> Otherwise, make sure your system is up to date and running the latest
> kernel (not sure what the Hardy roadmap looks like so I am unsure as to
> what the lastest is, just run apt-get install dist-upgrade)
>
>
> yes i'm dist-upgrade already. as root, works, bingo! also works as the
> user created by the ubuntu installer. but as any other user, not. if i
> deprive that orig user of it's orig home directory content, then that
> user also fails to access sound. but if i use the content of that orig
> home directory for another user (chown -R user.user), no help. mimicing
> all the orig user entries in /etc/group and /etc/gshadow also no help.
> failure looks like
> $ audacious /g/radio.pls
> MADPlug-Message: failed to open audio output: XMMS reverse compatibility
> output plugin
> $ strace -eopen alsamixer
> open("/etc/ld.so.cache", O_RDONLY) = 3
> open("/lib/libncurses.so.5", O_RDONLY) = 3
> open("/usr/lib/libasound.so.2", O_RDONLY) = 3
> open("/lib/tls/i686/cmov/libm.so.6", O_RDONLY) = 3
> open("/lib/tls/i686/cmov/libdl.so.2", O_RDONLY) = 3
> open("/lib/tls/i686/cmov/libpthread.so.0", O_RDONLY) = 3
> open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
> open("/dev/urandom", O_RDONLY) = 3
> open("/usr/share/alsa/alsa.conf", O_RDONLY) = 3
> open("/dev/snd/controlC0", O_RDONLY) = -1 EACCES (Permission denied)
> open("/dev/aloadC0", O_RDONLY) = -1 ENOENT (No such file or
> directory)
>
> alsamixer: function snd_ctl_open failed for default: No such file or
> directory
> Process 18713 detached
> i suppose i'm about ready to punt and just chown all my stuff over to
> that orig installer user, but anybody got any suggestion how perhaps to
> get sound working for any other user?
>
I can also confirm that this behavious exists in Karmic, which is nice
since I can help then ;-)
This is indeed a group issue, add your user to the audio group. This
should solve your problems when creating new users.
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