No sound, Kubuntu Intrepid KDE 4.2

[Brendan]

On Sunday 22 February 2009, Dotan Cohen wrote:
> > When I boot to the Hardy partition, I have sound and normal operation.  I
> > did notice that in the Intrepid bootups the computer no longer behaved
> > sluggish, so something has changed, even before the updates, but it was
> > nothing that happened due to my efforts.  If I was able to make myself
> > clear in this email, can you think of or see any other possibility for
> > restoring the sound? Thanks!
>
> Steven, first the obvious. Check that the sound is not muted! Some
> non-KDE Qt applications, Skype in particular, mute the system sound
> for reasons that I cannot fathom. There is even an option to disabe
> this behaviour within Skype!
>
> Other than that, I second the idea of trying with a different kernel.
> When you get to the screen with the "safe mode option" There should be
> other choices in addition to the regular boot, safe mode, and memtest.
> The regular kernel will say something like 2.6.n and the previous
> kernels will be 2.6.m where m<n. I'm stuck on Hardy, so I do not know
> the Intrepid kernel versions, but it should not be hard to figure out.

Honestly, I've been losing sound in KDE 4.2 as well lately. Just in the middle 
of doing various tasks, KDE will pop up a dialog saying that sound components 
have been removed from the system. Reboots fix it, but it happens randomly. 
Haven't cared enough to debug.