For me, anyway, kde4/kmix mute doesn't work. Seems to do nothing.
Well WORKSFOR_EVERYONE_BUT_ME, but still. :)
Hey, you have the strategy for dropping the kernel bug count to zero there. ;-) I'm not sure we should close this as we don't even know _why_ it doesn't work for you.
WORKSFORME on today's KDE4 live image. :)
Fair nuf, tried logging in as another user (root), doesn't work there either. ??
ltinkl's comment in the meeting was on the mark, Master Channel set to PCM by default, but for me, needs to be set to "Front". Now, truly does workforme.