https://bugzilla.novell.com/show_bug.cgi?id=727348
https://bugzilla.novell.com/show_bug.cgi?id=727348#c13
--- Comment #13 from J. Daniel Schmidt 2011-12-16 14:19:01 UTC ---
Ok, here we go.
I now have an openSUSE 12.1 GA.
Via KMix I can not break the muting anymore nor with plain alsamixer (without
-c0). Anyhow with "alsamixer -c0" I still can break it as it is not displaying
the muted status of several channels until a restart of "alsamixer -c0".
So here is the explanation for the following attachments. I even noted the key
strokes - I did not press any other key in between or clicked anywhere.
*allOK: no channel is muted, sound works
*master-muted: ran "alsamixer -c0" and pressed "m" (to mute "Master")
Result: _Only_ master is shown as muted, sound is muted -> correct
*master-unmuted: pressed "m" again (to unmute "Master")
(in the very same alsamixer)
Result: _All_ channels are shown as _un_muted, but sound is still muted ->
wrong
*last-check: pressed "ESC" (quit alsamixer), ran "alsamixer -c0" again
Result: Master shows as unmuted,
BUT _all_ of Headphone, Front, Surround, Center, LFE show as muted.
Unmuting them all (pressing "Right" and "m") brings sound back.
So, my impression is, that alsamixer does not get to know, or just does not
show, what channels were muted. Upon a restart of alsamixer it correctly reads
the current status for each channel.
As I hardly ever use "alsamixer -c0" to tune my sound output this is a rather
minor bug. For me it works with Kmix and plain alsamixer (without parameter).
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