On Thu, 17 Jan 2013 22:48:40 -0800
Dale Snell <[email protected]> dijo:
>> I need ideas for how to diagnose what is wrong. The only thing Lucid
>> gives me are System > Preferences > Sound and Applications > Sound
>> and Video > PulseAudio Volume Control. Neither is much help. Any
>> suggestions?
>First off, check to see if the kernel still sees your sound chip.
>
> $ ls /proc/asound
>
>should show you a "card0" directory, a symbolic link to card0
>named NVidia, probably "oss" and "seq" directories, and an
>assortment of regular files. Assuming everything is there, do a
>
> $ cat /proc/asound/cards
>
>This should return something like:
>
> 0 [NVidia ]: HDA-Intel - HDA NVidia
> HDA NVidia at 0xdeef8000 irq 22
>
>If that's there, then you know that the kernel saw your sound
>chip and loaded the driver module. As far as it's concerned,
>everything is just ducky. (The address and IRQ number will
>undoubtedly be different.)
Down to here everything produced the results as expected. The kernel
sees the sound chip and the driver module is loaded.
>
>The next step is to fire up alsamixer, so:
>
>$ alsamixer -c 0
>
>(The "-c 0" tells alsamixer to use card 0. This might not be
>necessary, but then again, it might.) You should have a nice
>ncurses graphical set of mixer controls: Master, Headphone, PCM,
>Front, Surround, and so on. My guess here is that everything has
>been muted -- alsa defaults to that state. (You'll see "MM" at
>the bottom of each control.) Select the controls you want with
>the arrow keys and hit "m" to un-mute them. When you're done, hit
><esc>, and you should be good to go.
I selected "All" (F5). The only bar that is muted is the Mic, but I
remember doing that a long time ago, although I can't remember why I
did it. I never use the Mic on this computer anyway. I have the
following bars and values:
Master 55
Headphone 100<>100
PCM 74<>74
Front 100<>100
Surround 100<>100
Center 100
LFE 100
Line 0<>0
CD 74<>74
Mic 0<>0
Mic Boost 0<>0
Mic Boost 0<>0
Phone --------
S/PDIF MM
S/PDIF D 00
Beep 100
Aux MM
Phono 55<>55
Note that I have had to turn the sound down lest I overload the input
on the stereo. That's why the Master is at 55.
I might be better at troubleshooting this if I had more clues about
what all the above abbreviations stand for and what they do.
>Anyway, sorry for the wall 'o text, but I hope it helps.
It helped a lot. At least now I know that the chip itself is working as
it is supposed to. Still a mystery why I'm not getting any output at
the jacks. Later today I'll rustle around the house and try to find an
old pair of standard PC speakers to plug in instead of using the input
to the stereo.
I have been ignoring this computer for a very long time, including
updates to Ubuntu. I suppose I ought to just bite the bullet and wipe
it and then install 12.04 or something.
Thanks for the pointers.
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