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This bug hit gnome-media or / and alsa-base, I think....
alsa-base 1.0.20+dfsg-1ubuntu4
gnome-media 2.27.91-0ubuntu1
I have an "audiotrak prodigy 7.1" - VT1720/24 [Envy24PT/HT] PCI Multi-
Channel Audio Controller / ICE1724 - multitrack.
SOUND PREFERENCES:
If I use the soundcard with the "analog stereo ouput" profile and change
the main output volume, then sometimes the volume is not changed and
instead the output balance is changed (to the right or to the left).
Then I changed the profile to "analog surround 5.1 output + analog stereo
input" and the output sound device flipped form "VT1720.." to "internal audio
analog stereo". That shouldn't happened.
So I turned it back to "VT1720.."
After that the sound is overmodulated / overdriven and it sounds like a
bad e-guitar.
If I change the output volume, then maybe the volume is changed (i
cannot hear it - only the loud bad sound) and the fade and the subwoofer
slider changed. The fader shouldn't changed.
If the output volume increase, the application volume increase. This is the
behaviour which I expect.
If the output volume decrease, the application volume decrease. This is the
behaviour which I expect.
If the application volume decrease, the output volume decrease too. This is not
the expected behaviour.
If I changed the fade to front (moving by mouse, not clicking), the balance
changed to the right and the subwoofer decreased.
If I changed the fade to rear (moving by mouse, not clicking), there is no
effect on balance and subwoofer, but there is also no change in the sound which
I listened.
To set balance and fade in the middle I had to click in the middle (not moving
by mouse).
Changing the subwoofer had an optical effect on the output volume, but
neither the real volume had changed nor the subwoofer sound had changed.
ALSA MIXER (no External Amplifier):
Changing the Master changed the fade in sound preferences and the other
way around.
ALSA MIXER (with External Amplifier):
Changing the Master changed the fade and the balance in sound preferences.
Changing the fade to front in sound preferences change the Master to low.
Changing the fade to rear in sound preferences sometimes change the Master to
low, sometimes is reset to the middle...
Changing the balance to left or right in sound preferences changed sometimes
the fade, sometimes not, but never changed anything else in the alsa mixer.
Changing the Master balance to the left, then the Master volume decrease.
Changing the Master balance to the right, the real sound turned to the right
and the balance of sound preferences turns to the right too.
....
Which further information are needed?
** Affects: gnome-media (Ubuntu)
Importance: Undecided
Status: New
--
volume controls change the wrong channel (accidentally?)
https://bugs.launchpad.net/bugs/433237
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