Comment 4 for bug 130067

I can confirm the same thing happens on my Toshiba Satellite A200 1GB, running Kubuntu gutsy. When I press the Fn+Mute keys the on-screen displays shows "Mute on", but the sound isn't turned off. Right click on the taskbar icon -> Mute doesn't work either. KMix shows no "Mute" buttons above the channel volume sliders, nor does alsamixer have the mute control for any of the channels.

tjgq@lisa:~$ lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
01:00.1 Audio device: ATI Technologies Inc Unknown device aa08

Is there anything we can do? Maybe prodding upstream for an updated ALSA driver?