[LAU] how to install the real time preempt kernel in ubuntu12.04 and make it the defult?

[Ralf Mardorf]

On Mon, 2012-08-20 at 18:59 -0400, Brett McCoy wrote:
> On Mon, Aug 20, 2012 at 6:23 PM, Ralf Mardorf
> <ralf.mardorf at alice-dsl.net> wrote:
> > On Mon, 2012-08-20 at 18:12 -0400, Brett McCoy wrote:
> >> On Mon, Aug 20, 2012 at 5:55 PM, trahern culver
> >> <sound.warrior20 at gmail.com> wrote:
> >>
> >> > how do I install the preempt kernel in ubuntu12.04 and make it the default kernel?
> >>
> >> Are you sure you need the realtime kernel? If you want to install
> >> Ubuntu and are going to do audio work, I recommend you install Ubuntu
> >> Studio, as it has everything setup out of the box for audio work,
> >> including jack with realtime scheduling (for which you do NOT need the
> >> realtime kernel).
> >>
> > +1 for US, but don't expect hat "threadirqs" is set up.
> 
> According to this, setting up "threadirqs" is not necessary for Ubuntu
> Studio 12.04:
> 
> https://help.ubuntu.com/community/FireWire#Set_IRQ_Priorities

Apologize, yes not for a realtime kernel ;). IIRC for the default kernel
threadirqs was missing.