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sound and microphone

  Date: Feb 06    Category: Unix / Linux / Ubuntu    Views: 281
  

Running 10.10. Realtek sound card.
Microphone was working before I had a new Nvidia graphics card installed.
Have read thru everything pertinent in Ubuntu forum, and in Launchpad. Tried
almost everything.

If I open alsamixer in terminal it immediately chooses the Nvidia GRAPHIC CARD.
I try switching to the Realtek, select it, and it immediately changes back to
the Nvidia. I want the Nvidia for graphics only not sound. Is there any other
way to make the realtek the default?

I can hear the mic thru the speakers, output controls the volume there. Input
does nothing. Have switched almost every choice in preferences with no joy.

The mike is working. It works on the XP hard drive. XP sees the Realtek as the
sound card, and does record. Both drives use the same hardware.

Since changing the card, I can now run Stellarium and a few of the other
programs, but the mike is gone. We use the mike for Skype only.
A combo headset with a mike can hear sounds, but that mike doesn't work either.
I suspect it's Ubuntu picking the wrong card.

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6 Answers Found

 
Answer #1    Answered On: Feb 06    

A useful diagnostic here would be to remove the new card and see if
the sound problem stays - it might be co-incidental. If microphone
comes back to life then it it some sort of conflict but if it doesn't
then you know to look elsewhere.

w> Microphone was working before I had a new Nvidia graphics card
w> installed.


 
Answer #2    Answered On: Feb 06    

That would mean another visit to the tech. I don't have another video card as
the one on the motherboard is no good.

And why doesn't XP get the cards confused? If the new video card took over
sounds in the system, the mike wouldn't work in XP and it does.
XP sees the sound card as a Realtec. The problem is only in Ubuntu.
Ubuntu and XP are 2 different hard drives on the same machine.

 
Answer #3    Answered On: Feb 06    

Not such an easy diagnostic then :-( It is strange that changing
video would throw the sound, and even more so that it's just the
microphone side. If you have a surround sound type audio ( presumably
this is on-board too ? ) then try plugging the microphone into
different sockets. I have seen sockets mapped incorrectly.

Other than that, try different hardware selections in audio properties
to see if one of those works. Depending on the audio chip you may have
a number of options or very few.

Another thing to try is a live CD boot with Ubuntu and see if the
sound works properly in there.

What was the problem with the on-board video ?

 
Answer #4    Answered On: Feb 06    

Just tried logging in as guest. The alsamixer there only sees the Realtec, and
that the sound system isn't configured properly. Sound tool won't even open.

So Ubuntu does have the system configuration wrong.

 
Answer #5    Answered On: Feb 06    

I tried about everything I could find on all forums. It was Ubuntu and the
driver for the Nvidia. For some reason 10.10 saw the Nvidia as a multimedia
card, and nothing would dissuade 10.10.

I upgraded to 11.04, and didn't manually install the driver for the Nvidia, and
the sound worked! Unity wouldn't. Said I had the wrong configuration to run
Unity. So Unity didn't see the card on installation either. Finally got tired of
futzing and reinstalled 11.04, telling it to get all updates, etc, and this time
Ubuntu got it right!
Really a nuisance. Sound card just fine in XP drive where I don't particularly
need it.

 
Answer #6    Answered On: Feb 06    


When any OS goes on the fritz the only cure can often be a clean
install - guess Ubuntu is no different there.

 
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