Bug 113316 - PCM volume is muted and set to zero
Summary: PCM volume is muted and set to zero
Status: RESOLVED FIXED
Alias: None
Product: SUSE LINUX 10.0
Classification: openSUSE
Component: Sound (show other bugs)
Version: Beta 3
Hardware: Other All
: P5 - None : Major
Target Milestone: ---
Assignee: Takashi Iwai
QA Contact: E-mail List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-08-26 13:49 UTC by Cameron Meadors
Modified: 2005-09-12 13:41 UTC (History)
1 user (show)

See Also:
Found By: Other
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Cameron Meadors 2005-08-26 13:49:46 UTC 
The volume for the PCM is muted and set to zero.  This is for the Intel
82801DB-ICH4 sound device.
Comment 1 Cameron Meadors 2005-08-26 14:03:45 UTC 
After unmuting and setting volume level, it gets reset to muted zero volume. 
Seems to happen when sound playing applications start.
Comment 2 Takashi Iwai 2005-08-26 14:07:47 UTC 
If so, it's a bug of application.  But I hardly believe it happens on every app.

Which desktop system are you using?  How did you login?
And how did you check whether PCM is muted?
Comment 3 Cameron Meadors 2005-08-26 14:09:51 UTC 
There does seem to be a bug with banshee which is the only app that seems to do
it.  But as I said it is this way when I log in.  I am using GNOME.  I am using
alsamixer to see that it is muted.
Comment 4 Takashi Iwai 2005-08-26 14:14:52 UTC 
The way you checked is OK, so it sounds like a bug of banshee or gstreamer.
Possibly changing the gstreamer backend to others may work.

Can you check other gstreamer apps?
Comment 5 Cameron Meadors 2005-08-26 14:25:45 UTC 
Other gstreamer apps do not reset volume level.  The bug is that before any
sound apps even touch the sound device the volume for the PCM is muted and set
to zero.
Comment 6 Takashi Iwai 2005-08-26 14:33:58 UTC 
Added maintainer to Cc.
Comment 7 Cameron Meadors 2005-08-26 15:34:25 UTC 
I tested on different hardware and the PCM is set to a reasonable level.  I
could just be this sound card.
Comment 8 Takashi Iwai 2005-08-26 15:48:33 UTC 
Please check /proc/asound/card0/codec97#0/ac97#0+0.
If the codec is C-Media's one, it has basically no PCM control on hardware.  The
PCM volume is emulated on software via plugin.  But the value must be kept in
the driver, so this kind of problem shouldn't happen...

If another codec, I have no idea what's wrong.
Comment 9 Cameron Meadors 2005-08-26 16:56:45 UTC 
it is an AD1981B
Comment 10 Cameron Meadors 2005-09-12 13:41:23 UTC 
this works in rc1