Repost: FC3: Static on VIA AC97 Audio Controller

Philip A. Chapman pchapman at pcsw.us
Wed Nov 17 16:01:08 UTC 2004


Everyone,

This is a repost. I don't normally do these.  However I am really hoping
that there is someone on the list that can help me with this.  I have
not been able to google an answer.  Nor has my own limited skills been
of any use.  I am hoping that someone  with suggestions or answers is
reading this list today that wasn't reading it late Monday night.

I have a laptop which has a VIA Tech sound chip.  The Chip is identified
as "VT8233/A/8235/8237 AC Audio Controller" in /etc/sysconfig/hwconfig.
The snd-via82xx module is being used for this chip.

When I play .ogg files through winamp or ogg123, I get sound that is low
volume and has a lot of static.  I get the same results when I use
playwave to play a .wav file.  I believe this issue is caused by not
having a volume control for the "PCM" input.  I have used the gnome
volume control panel and aumix, but cannot control the volume to PCM,
only mute it.  I have come to this conclusion after playing DVDs.  I had
the exact same issue with DVD audio until I located the second "VIA DXS"
slider (there are a total of 4 sliders with this label) and increased it
considerably (A little over half way).  I might mention that on FC1, and
FC2, I did not have this issue.  On none of the 3 FC releases have the
"Master" volume control worked.  I typically set the input control
fairly high, then use the volume control wheel on the front of my laptop
to adjust the volume to my headphones (or crappy built in speakers).  I
do not know whether the master volume control works on Windows as I do
not use this laptop for windows.  I've always assumed that the chip does
not support it because of the manual volumn control wheel.

Has anyone else experienced this issue?  Are there any solutions.

Please forgive me for the repost.  If I still get no answers, I will NOT
continue to repost.

-- 
Philip A. Chapman

Application Development:
Java, Visual Basic (MCP), PostgreSQL, MySQL, MSSQL
Linux, Windows 9x, Windows NT, Windows 2000, Windows XP
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