setting volume to the minimum does not mute sound

[Manuel López-Ibáñez]

When I set the volume to the minimum level, the icon changes, the tooltip shows
"Master: muted" and the right-click menu shows the option Muted as checked.
However, I can still hear sound while using for example mplayer.

[Manuel López-Ibáñez (manuellopezibanez)]

I can also hear sound when I play sound events in Gnome Sound Preferences, so
it is not an issue with mplayer.

[Manuel López-Ibáñez (manuellopezibanez)]

In the applet preferences I can choose the device and track to control.

The behaviour described only happens with Intel ICH5 (Alsa Mixer).
The other device, Analog Devices AD1985 (OSS Mixer), works as expected.

[Manuel López-Ibáñez (manuellopezibanez)]

Choosing Mute in right-click menu does indeed mutes sound whichever device is used.

I am starting to think that it is an issue with alsamixer.
Yes, I tested it. It is an issue in alsamixer.

[Manuel López-Ibáñez (manuellopezibanez)]

This bug has been marked as a duplicate of bug 16454.

[Sebastien Bacher (seb128)]

Thanks for the bug and following on it