Problems running "amixer"

Problems running "amixer"

[Adish Kuvelker]

Hello,

I have cross-compiled alsa-utils (alsa-utils-1.0.13) and alsa-lib
(alsa-lib-1.0.13). But when I ran the "amixer" I found some errors. I
am pasting the same for your reference.
# ./amixer
ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL default
amixer: Mixer attach default error: No such file or directory

The snddevices script creates a node "/dev/snd" and the device number
of these nodes matches with the ones registered in "/proc/asound".

Can anyone point me to the reason why the above mentioned error
occurs? If any more information is required over the way my sound
nodes are registered with the system I shall post it.

Regards;
Aadish

Re: Problems running "amixer"

[Clemens Ladisch]

Adish Kuvelker wrote:
> # ./amixer
> ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL default

Apparently, alsa-lib has not been installed correctly, i.e.,
/usr/share/alsa/alsa.conf and other files in this directory are missing.


Regards,
Clemens

Re: Problems running "amixer"

[Adish Kuvelker]

Hello Clemens,

I have the "alsa" folder with the files alsa.conf. My "amixer" utility
has been copied under "/bin".
I followed a mail thread which said to load "share" folder under
"/usr". But even with this the problem persisted.

I'm just pasting here the contents of my /usr/share
# ls share/
aclocal  alsa     locale
# ls -la share/alsa/
drwxr-xr-x    4 root     root         1024 May 12  2010 .
drwxr-xr-x    5 root     root         1024 May 12  2010 ..
-rw-r--r--    1 root     root         7701 May 12  2010 alsa.conf
drwxr-xr-x    3 root     root         2048 May 12  2010 cards
drwxr-xr-x    2 root     root         1024 May 12  2010 pcm
-rw-r--r--    1 root     root         3205 May 12  2010 sndo-mixer.alisp




Just to make sure, do I have to install my entire staging area created
through install of alsa-lib and alsa-utils in to the /usr/share?

Regards;
Aadish




On Wed, Jul 7, 2010 at 6:16 PM, Clemens Ladisch <clemens@ladisch.de> wrote:
> Adish Kuvelker wrote:
>> # ./amixer
>> ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL default
>
> Apparently, alsa-lib has not been installed correctly, i.e.,
> /usr/share/alsa/alsa.conf and other files in this directory are missing.
>
>
> Regards,
> Clemens
>

Re: Problems running "amixer"

[Adish Kuvelker]

Hello,

I don't have this file ".asoundrc" in my ramdisk. Do I need this?

Regards
Aadish

On Wed, Jul 7, 2010 at 6:38 PM, Adish Kuvelker <adkuvi@gmail.com> wrote:
> Hello Clemens,
>
> I have the "alsa" folder with the files alsa.conf. My "amixer" utility
> has been copied under "/bin".
> I followed a mail thread which said to load "share" folder under
> "/usr". But even with this the problem persisted.
>
> I'm just pasting here the contents of my /usr/share
> # ls share/
> aclocal  alsa     locale
> # ls -la share/alsa/
> drwxr-xr-x    4 root     root         1024 May 12  2010 .
> drwxr-xr-x    5 root     root         1024 May 12  2010 ..
> -rw-r--r--    1 root     root         7701 May 12  2010 alsa.conf
> drwxr-xr-x    3 root     root         2048 May 12  2010 cards
> drwxr-xr-x    2 root     root         1024 May 12  2010 pcm
> -rw-r--r--    1 root     root         3205 May 12  2010 sndo-mixer.alisp
>
>
>
>
> Just to make sure, do I have to install my entire staging area created
> through install of alsa-lib and alsa-utils in to the /usr/share?
>
> Regards;
> Aadish
>
>
>
>
> On Wed, Jul 7, 2010 at 6:16 PM, Clemens Ladisch <clemens@ladisch.de> wrote:
>> Adish Kuvelker wrote:
>>> # ./amixer
>>> ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL default
>>
>> Apparently, alsa-lib has not been installed correctly, i.e.,
>> /usr/share/alsa/alsa.conf and other files in this directory are missing.
>>
>>
>> Regards,
>> Clemens
>>
>

Re: Problems running "amixer"

[Clemens Ladisch]

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

Adish Kuvelker wrote:
> I don't have this file ".asoundrc" in my ramdisk. Do I need this?

No.

>>>> ALSA lib control.c:910:(snd_ctl_open_noupdate) Invalid CTL default

I just tried without alsa.conf, and alsa-lib then outputs an additional
error message in this case; so this is not your problem.

Can you try "strace amixer"?


Regards,
Clemens

Re: Problems running "amixer"

[Adish Kuvelker]

>>>>> A: Because it messes up the order in which people normally read text.
>>>>> Q: Why is top-posting such a bad thing?
>>>>> A: Top-posting.
>>>>> Q: What is the most annoying thing in e-mail?

I'm sorry for messing it up....


>>>>> I just tried without alsa.conf, and alsa-lib then outputs an additional
>>>>> error message in this case; so this is not your problem.
>
>>>>> Can you try "strace amixer"?

I tried with the strace and got the bug. Now it's working fine. Just
that alsa.cong and related files weren't at right location in ramdisk
file system.
Thanks a lot Clemens.

Regards;
Aadish