debathena-cluster should turn sound off differently

[jdreed]

We should investigate a way to disable sound on the cluster machines that takes effect immediately, rather than before the first login.

Additionally, the sound of an entire cluster playing the Ubuntu login sound all at once and just a little bit out of phase is pretty awesome.

[broder]

Sound is currently muted in debathena-reactivate, in the debian/PostSession/Default.debathena script. The somewhat obvious solution would presumably be moving that to the PreSession? script, but I have no idea if that runs early enough to mute the first login sound.

Does anybody else know? Should we move that snippet to an initscript instead?

[broder]

This has been discussed elsewhere, but I'll go ahead and put the info here.

The PreSession runs too late to turn off sound before the login noise. An init script in debathena-cluster-login-config that turns down the volume is probably a good way to fix this. To avoid code duplication the PostSession script should be changed to call the initscript.

[mikemeko]

This is fixed in r24012.

[geofft]

Tested by reinstalling lola-granola and hacking up the installer to work out of -proposed; it works. Moved to production.

There's a related issue that this doesn't do anything on the Dell 760s because they have an entirely different "Mono" slider all the way to the right of alsamixer that's off by default, but making unmuting sane across the different hardware types is a different ticket.